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Oregon State University
1.
Kelley, Jeremiah (Jeremiah Joseph).
Nanocomposites incorporating cellulose nanocrystals with potential applications in lithium ion batteries.
Degree: MS, Material Science, 2011, Oregon State University
URL: http://hdl.handle.net/1957/21774
► Cellulose nanocrystals (CNCs) have received considerable attention over the last ten years because CNCs can be produced from renewable materials such as straw, wood, cotton,…
(more)
▼ Cellulose nanocrystals (CNCs) have received considerable attention over the last ten years because CNCs can be produced from renewable materials such as straw, wood, cotton, and sea animals (tunicates). CNCs are slender rods with high aspect ratios (10-100) and the final dimensions of the CNCs depend on the starting material. CNCs are one of the strongest and stiffest organic materials, with an estimated tensile strength (TS) of 7.5 GPa and theoretical calculations estimate the tensile modulus (E) of CNCs at 168 GPa. In addition, composites incorporating CNCs have been fabricated from a variety of matrices and CNCs increase the E significantly and to a lesser extent the TS. Improvement is dependent on many variables, but good dispersion of the filler in the matrix is critical.
A copolymer of poly(vinylidene fluoride) (PVDF), poly(vinylidene fluoride-co-hexafluoropropylene) (PVDFHFP), has gained popularity over the years in the area of lithium ion battery technology, mainly, as an electrode binder, but also as a polymer electrolyte separator. However, the mechanical properties of neat PVDFHFP do not meet the standard requirement for commercial separators, namely the low E. In this work, novel PVDHFHFP/CNC nanocomposite films were fabricated and characterized. It was found that incorporation of CNCs improves the E and TS. The improvement in mechanical properties of PVDFHFP upon addition of CNCs makes PVDFHFP a more suitable candidate for polymer separators in lithium ion batteries. Separators for Li⁺ batteries are most commonly polyolefins (e.g., polyethylene or polypropylene). Thus, the second part of this project focused on incorporation of CNCs into high density polyethylene (HDPE).
Advisors/Committee Members: Simonsen, John (advisor), Lerner, Mike (committee member).
Subjects/Keywords: nanocomposites; Nanocrystals
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APA (6th Edition):
Kelley, J. (. J. (2011). Nanocomposites incorporating cellulose nanocrystals with potential applications in lithium ion batteries. (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/21774
Chicago Manual of Style (16th Edition):
Kelley, Jeremiah (Jeremiah Joseph). “Nanocomposites incorporating cellulose nanocrystals with potential applications in lithium ion batteries.” 2011. Masters Thesis, Oregon State University. Accessed February 26, 2021.
http://hdl.handle.net/1957/21774.
MLA Handbook (7th Edition):
Kelley, Jeremiah (Jeremiah Joseph). “Nanocomposites incorporating cellulose nanocrystals with potential applications in lithium ion batteries.” 2011. Web. 26 Feb 2021.
Vancouver:
Kelley J(J. Nanocomposites incorporating cellulose nanocrystals with potential applications in lithium ion batteries. [Internet] [Masters thesis]. Oregon State University; 2011. [cited 2021 Feb 26].
Available from: http://hdl.handle.net/1957/21774.
Council of Science Editors:
Kelley J(J. Nanocomposites incorporating cellulose nanocrystals with potential applications in lithium ion batteries. [Masters Thesis]. Oregon State University; 2011. Available from: http://hdl.handle.net/1957/21774

Mississippi State University
2.
Cho, Hosouk.
CHEMICAL INCORPORATION OF POLYHEDRAL OLIGOMERIC SILSESQUIOXANE INTO THERMOSET MATRICES.
Degree: PhD, Chemistry, 2006, Mississippi State University
URL: http://sun.library.msstate.edu/ETD-db/theses/available/etd-07062006-183428/
;
► A new class of organic-inorganic hybrid nanocomposites containing well-defined polyhedral oligomeric silsesquioxane (POSS) monomers, which have been copolymerized with organic monomers, were synthesized. Poly(isobutyl methacrylate-co-butanediol…
(more)
▼ A new class of organic-inorganic hybrid
nanocomposites containing well-defined polyhedral oligomeric silsesquioxane (POSS) monomers, which have been copolymerized with organic monomers, were synthesized.
Poly(isobutyl methacrylate-co-butanediol dimethacrylate-co-3-methacrylylpropyl-
heptaisobutyl(T8)polyhedral oligomeric silsesquioxane) (P(iBMA-co-BDMA-co-MA-POSS))
nanocomposites with different crosslink densities (BDMA loadings of 1, 3 and 5 wt%) and different MA-POSS percentages (5, 10, 15, 20 and 30 wt%) have been synthesized by radical-initiated terpolymerization. Linear P(iBMA-co-MA-POSS) copolymers were also prepared. Viscoelastic properties and morphologies were studied by DMTA (dynamic mechanical thermal analysis) and TEM (transmission electron microscopy).
Two types of inorganic-organic hybrid polyhedral oligomeric silsesquioxane (POSS) / vinyl ester (VE)
nanocomposites were synthesized. The first type contained a mixture of T8, T10 and T12 cages, each multifunctionalized with 3-methacrylylpropyl groups. The second type contained octa(3-methacrylylpropyldimethylsiloxyl)(T8)POSS. VE/POSS samples with weight ratios of 99/1, 97/3, 95/5, 90/10, 85/15 and 80/20 were prepared of each type. The
nanocomposites were characterized by DMTA, TEM, scanning electron microscopy (SEM), X-ray energy dispersive spectroscopy (X-EDS), swelling, extraction and FT-IR.
Three classes of inorganic-organic hybrid phenolic resin/polyhedral oligomeric silsesquioxane (POSS)
nanocomposites were also synthesized via condensation polymerization. The POSS macromers employed included multifunctional dichloromethylsilylethylheptaisobutyl(T8)POSS, trisilanolheptaphenyl-POSS, and poly(phenylsilsesquioxane) uncured POSS. A nonfunctional octaisobutyl(T8)POSS was blended into the uncured phenolic resin followed by curing under the same conditions as those used for the other three
nanocomposites classes. Phenolic/POSS samples with weight ratios of 99/1, 97/3, 95/5 and 90/10 were prepared of each type.
Octaaminophenyl(T8)POSS and dodecaaminophenyl(T12)POSS were synthesized, characterized and then incorporated into two types of thermoset resins: (1) the bisphenol-F-based cyanate ester resin, PT-15, and (2) epoxy (Epon 828, Shell Chemical Corp.)/ 4,4?-diaminodiphenylmethane (DDM) resin, respectively, to make two series of
nanocomposites. The sum of amino groups in both DDM and POSS were held in a 1:1 mole ratio to the epoxy groups. EPON-828/POSS/DDM (78.63/0/21.37, 77.48/5/17.52, 76.34/10/13.66, 74.05/20/5.95 and 72.28/27.72/0 wt/wt/wt compositions for both series) was prepared. PT-15/POSS composites (99/1, 97/3 and 95/5 wt/wt compositions for both types) were also prepared.
Advisors/Committee Members: Charles U. Pittman (chair).
Subjects/Keywords: nanocomposites
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APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Cho, H. (2006). CHEMICAL INCORPORATION OF POLYHEDRAL OLIGOMERIC SILSESQUIOXANE INTO THERMOSET MATRICES. (Doctoral Dissertation). Mississippi State University. Retrieved from http://sun.library.msstate.edu/ETD-db/theses/available/etd-07062006-183428/ ;
Chicago Manual of Style (16th Edition):
Cho, Hosouk. “CHEMICAL INCORPORATION OF POLYHEDRAL OLIGOMERIC SILSESQUIOXANE INTO THERMOSET MATRICES.” 2006. Doctoral Dissertation, Mississippi State University. Accessed February 26, 2021.
http://sun.library.msstate.edu/ETD-db/theses/available/etd-07062006-183428/ ;.
MLA Handbook (7th Edition):
Cho, Hosouk. “CHEMICAL INCORPORATION OF POLYHEDRAL OLIGOMERIC SILSESQUIOXANE INTO THERMOSET MATRICES.” 2006. Web. 26 Feb 2021.
Vancouver:
Cho H. CHEMICAL INCORPORATION OF POLYHEDRAL OLIGOMERIC SILSESQUIOXANE INTO THERMOSET MATRICES. [Internet] [Doctoral dissertation]. Mississippi State University; 2006. [cited 2021 Feb 26].
Available from: http://sun.library.msstate.edu/ETD-db/theses/available/etd-07062006-183428/ ;.
Council of Science Editors:
Cho H. CHEMICAL INCORPORATION OF POLYHEDRAL OLIGOMERIC SILSESQUIOXANE INTO THERMOSET MATRICES. [Doctoral Dissertation]. Mississippi State University; 2006. Available from: http://sun.library.msstate.edu/ETD-db/theses/available/etd-07062006-183428/ ;
3.
Liu, Huinan.
Design, Fabrication and Evaluation of 2D to 3D
nanostructured Ceramic/Polymer Composites for Orthopedic
Regeneration and Controlled Drug Delivery.
Degree: PhD, Biomedical Engineering, 2008, Brown University
URL: https://repository.library.brown.edu/studio/item/bdr:237/
► Desirable cytocompatibility properties of nano-sized ceramics were combined with the tunable degradability and deformability of a select polymer (poly-lactide-co-glycolide, or PLGA) to optimize biological and…
(more)
▼ Desirable cytocompatibility properties of nano-sized
ceramics were combined with the tunable degradability and
deformability of a select polymer (poly-lactide-co-glycolide, or
PLGA) to optimize biological and mechanical properties for
orthopedic tissue regeneration. Nanophase ceramics mimic the size
scale of constituent components of natural bone and enhance the
adsorption of proteins that mediate bone cell adhesion. Results
have shown significantly promoted osteoblast (bone-forming cell)
adhesion and long-term functions (alkaline phosphatase activity and
calcium deposition) on nanophase ceramics compared to conventional
(micron-scale) ceramics. Therefore, nano-titania particles were
first dispersed in a model polymer (PLGA) matrix using sonication
to imitate the nano-sized surface features and distribution of
nano-ceramics in/on bone. Surface characteristics of the composites
(such as topography, surface area and surface roughness) were
studied. Importantly, results showed that osteoblast adhesion was
the greatest when surface roughness values of the composites were
closer to that of natural bone; this was mediated by controlling
the dispersion of titania in PLGA. Moreover, this study
demonstrated that the dispersion of nanophase titania in PLGA
decreased the harmful acidic pH changes of PLGA as it degrades.
From the perspective of mechanical properties, compared to
agglomerated nano-titania in PLGA, well-dispersed nanophase titania
in PLGA improved the tensile and compressive moduli and strength of
these composites. In order to mimic the hierarchical structure of
bone, a novel aerosol-based 3D printing technique was used to
further fabricate nanostructured 3D ceramic/polymer composites.
Osteoblast interactions with these 3D scaffolds provided evidence
of an even further promoted bone cell infiltration into such 3D
structures. Lastly,
nanocomposites were used as novel drug delivery
systems to promote bone growth. Specifically, a bone morphogenetic
protein (BMP-7) derived peptide (DIF-7c) was loaded onto nanophase
hydroxyapatite/PLGA composites by either covalent chemical
attachment or physical adsorption. Results demonstrated that the
model peptide was successfully immobilized onto nano-HA/PLGA
composites using aminosilane chemistry. Moreover, a greater
prolonged two-phase release profile was achieved using these
nanocomposite-based drug delivery systems over single-phase
(hydroxyapatite or PLGA) drug carriers. In summary, this
dissertation demonstrated for the first time that nanophase
ceramic/polymer composites are promising candidates as novel,
drug-carrying orthopedic materials for more effective bone
regeneration and bone disease treatment.
Advisors/Committee Members: Webster, Thomas (director), Morgan, Jeffrey (reader), Mathiowitz, Edith (reader), Palmore, G. Tayhas (reader), Karp, Jeffrey (reader).
Subjects/Keywords: nanocomposites
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Liu, H. (2008). Design, Fabrication and Evaluation of 2D to 3D
nanostructured Ceramic/Polymer Composites for Orthopedic
Regeneration and Controlled Drug Delivery. (Doctoral Dissertation). Brown University. Retrieved from https://repository.library.brown.edu/studio/item/bdr:237/
Chicago Manual of Style (16th Edition):
Liu, Huinan. “Design, Fabrication and Evaluation of 2D to 3D
nanostructured Ceramic/Polymer Composites for Orthopedic
Regeneration and Controlled Drug Delivery.” 2008. Doctoral Dissertation, Brown University. Accessed February 26, 2021.
https://repository.library.brown.edu/studio/item/bdr:237/.
MLA Handbook (7th Edition):
Liu, Huinan. “Design, Fabrication and Evaluation of 2D to 3D
nanostructured Ceramic/Polymer Composites for Orthopedic
Regeneration and Controlled Drug Delivery.” 2008. Web. 26 Feb 2021.
Vancouver:
Liu H. Design, Fabrication and Evaluation of 2D to 3D
nanostructured Ceramic/Polymer Composites for Orthopedic
Regeneration and Controlled Drug Delivery. [Internet] [Doctoral dissertation]. Brown University; 2008. [cited 2021 Feb 26].
Available from: https://repository.library.brown.edu/studio/item/bdr:237/.
Council of Science Editors:
Liu H. Design, Fabrication and Evaluation of 2D to 3D
nanostructured Ceramic/Polymer Composites for Orthopedic
Regeneration and Controlled Drug Delivery. [Doctoral Dissertation]. Brown University; 2008. Available from: https://repository.library.brown.edu/studio/item/bdr:237/
4.
Suresh Kumar, Danikonda.
Preparation and characterization of graphene oxide
reinforced thermophastic starch based green
nanocomposites;.
Degree: 2015, Osmania University
URL: http://shodhganga.inflibnet.ac.in/handle/10603/42958
Subjects/Keywords: Nanocomposites
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APA ·
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APA (6th Edition):
Suresh Kumar, D. (2015). Preparation and characterization of graphene oxide
reinforced thermophastic starch based green
nanocomposites;. (Thesis). Osmania University. Retrieved from http://shodhganga.inflibnet.ac.in/handle/10603/42958
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Suresh Kumar, Danikonda. “Preparation and characterization of graphene oxide
reinforced thermophastic starch based green
nanocomposites;.” 2015. Thesis, Osmania University. Accessed February 26, 2021.
http://shodhganga.inflibnet.ac.in/handle/10603/42958.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Suresh Kumar, Danikonda. “Preparation and characterization of graphene oxide
reinforced thermophastic starch based green
nanocomposites;.” 2015. Web. 26 Feb 2021.
Vancouver:
Suresh Kumar D. Preparation and characterization of graphene oxide
reinforced thermophastic starch based green
nanocomposites;. [Internet] [Thesis]. Osmania University; 2015. [cited 2021 Feb 26].
Available from: http://shodhganga.inflibnet.ac.in/handle/10603/42958.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Suresh Kumar D. Preparation and characterization of graphene oxide
reinforced thermophastic starch based green
nanocomposites;. [Thesis]. Osmania University; 2015. Available from: http://shodhganga.inflibnet.ac.in/handle/10603/42958
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Addis Ababa University
5.
ASEFA, ABADI.
STUDIES OF NOVEL GRAPHENE NANORIBBON/ POLYANILINE NANOCOMPOSITES FOR THEIR APPLICATIONS IN SOLAR CELLS
.
Degree: 2013, Addis Ababa University
URL: http://etd.aau.edu.et/dspace/handle/123456789/755
► Organic polymer nanocomposites blended with graphene nanostructures have recently attracted lot of scientific interest due to their novel heterojunction charge transport properties and for fabrication…
(more)
▼ Organic polymer
nanocomposites blended with graphene nanostructures have recently attracted
lot of scientific interest due to their novel heterojunction charge transport properties and for
fabrication of solar cells with enhanced energy conversion efficiencies. Simulational studies of
electronic and transport properties of polyaniline-graphene nanoribbon (PAn-GNR)
nanocomposite systems have been performed in various conformations and in strict percolation
regime. Ab-initio DFT-LDA-NEGF simulations have been carried out for at least seven
compositionally vivid samples of the PAn-GNR system with built-in two-probe device
geometries. As obtained density of states (DOS) and transmission spectra [T(E)] plots are
examined for the charge transport behavior in these nano-systems. We have observed significant
number of contributing states driven from contact electrodes in to the nanomaterial, which are
described on the basis of Fano effects and as induced strong couplings. We have also studied
electron and hole eigenstate conduction channels along with I–V measurements using Landauer
relations for these
nanocomposites which help in understanding different modes of the charge
transport. For some of the samples we have observed a negative differential resistance (NDR)
phenomenon which is rightly explained. Diagnoses of the NDR phenomena in respect to
presence of Fano states and other DOS and transmission singularities have been conceded.
Prospects of self-aligned PAN-GNR
nanocomposites for solar cell applications have also
discussed. The present study of nano devices would be helpful in understanding intrinsic
properties of photovoltaic materials in nano-devices for their futuristic deployment in nano-solar
cells.
Advisors/Committee Members: Prof. Javed Mazher (advisor).
Subjects/Keywords: graphene;
nanocomposites
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
ASEFA, A. (2013). STUDIES OF NOVEL GRAPHENE NANORIBBON/ POLYANILINE NANOCOMPOSITES FOR THEIR APPLICATIONS IN SOLAR CELLS
. (Thesis). Addis Ababa University. Retrieved from http://etd.aau.edu.et/dspace/handle/123456789/755
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
ASEFA, ABADI. “STUDIES OF NOVEL GRAPHENE NANORIBBON/ POLYANILINE NANOCOMPOSITES FOR THEIR APPLICATIONS IN SOLAR CELLS
.” 2013. Thesis, Addis Ababa University. Accessed February 26, 2021.
http://etd.aau.edu.et/dspace/handle/123456789/755.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
ASEFA, ABADI. “STUDIES OF NOVEL GRAPHENE NANORIBBON/ POLYANILINE NANOCOMPOSITES FOR THEIR APPLICATIONS IN SOLAR CELLS
.” 2013. Web. 26 Feb 2021.
Vancouver:
ASEFA A. STUDIES OF NOVEL GRAPHENE NANORIBBON/ POLYANILINE NANOCOMPOSITES FOR THEIR APPLICATIONS IN SOLAR CELLS
. [Internet] [Thesis]. Addis Ababa University; 2013. [cited 2021 Feb 26].
Available from: http://etd.aau.edu.et/dspace/handle/123456789/755.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
ASEFA A. STUDIES OF NOVEL GRAPHENE NANORIBBON/ POLYANILINE NANOCOMPOSITES FOR THEIR APPLICATIONS IN SOLAR CELLS
. [Thesis]. Addis Ababa University; 2013. Available from: http://etd.aau.edu.et/dspace/handle/123456789/755
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
6.
Pereira Nabais, Catarina.
Contribution à l’étude de l’insertion électrochimique du lithium dans des nanocomposites graphite / Pb et graphite / Sn / Sb : Contribution to the study of lithium electrochemical insertion in graphite / Pb and graphite / Sn / Sb nanocomposites.
Degree: Docteur es, Physique et Chimie de la Matière et des Matériaux, 2008, Université Henri Poincaré – Nancy I
URL: http://www.theses.fr/2008NAN10029
► Cette étude s’inscrit dans le cadre de la recherche de nouvelles électrodes négatives de batteries à ions lithium ayant des capacités supérieures à celles du…
(more)
▼ Cette étude s’inscrit dans le cadre de la recherche de nouvelles électrodes négatives de batteries à ions lithium ayant des capacités supérieures à celles du graphite. La synthèse de nouveaux matériaux d’électrode, constitués de nanoparticules métalliques de plomb ou d’alliage étain/antimoine déposées sur le graphite, consiste à réduire des halogénures métalliques, en présence de graphite, à l’aide d’un hydrure alcalin (NaH ou LiH) activé par un alcoolate généré in situ. Les caractéristiques structurales et morphologiques des différents systèmes graphite – métal sont ici étudiées par DRX, MET et MEB afin de mieux comprendre les mécanismes susceptibles d’intervenir lors de l’insertion de lithium. Le système graphite - plomb est étudié dans le but d’appréhender l’importance des interactions graphite - métal sur les performances électrochimiques. En effet, le caractère métallique du plomb paraît conduire à un faible ancrage des nanoparticules au support carboné et à des performances médiocres de ces matériaux comme électrodes négatives de batteries Li-ion. L’investigation systématique des composites graphite/(1-x)Sn/(x)Sb en fonction de la teneur en antimoine montre que le caractère semi-métallique de l’antimoine conduit à une amélioration des propriétés mécaniques et d’ancrage des nanoparticules de l’alliage SnSb au graphite. L’étude structurale et morphologique en fonction de la nature de l’hydrure montre que LiH comparé à NaH conduit à des composites plus homogènes, dont les particules, mieux accrochées à la surface du graphite, présentent une meilleure tenue en cyclage et des capacités massiques plus élevées.
The main propose of this work is to investigate new anode materials possessing high mass capacity and being able of replacing graphite in Li-ion batteries. Electrode materials constituted of Pb and Sn/Sb alloy nanoparticles dispersed on the graphite surface, were obtained by chemical reduction of a metal halide, in the presence of graphite, using an alkoxide - activated hydride (NaH or LiH) as a reducing agent. To collect information about the structural and the morphological characteristics of graphite-metal powders, XRD, TEM and SEM analyses were performed. These results allowed to establish a relation between the powder sample characteristics and the encountered electrochemical performances (mass capacity and cycling stability) during lithium insertion / de-insertion process. Graphite – Pb system was used as model for studying the influence of metal-graphite interactions on the electrochemical behaviour of graphite-metal compounds. The results point out to a weak interaction between Pb metal particles and the graphite surface, which seems to be the main reason for the poor electrochemical performances observed during cycling. The systematic study of graphite/(1-x)Sn/(x)Sb composites as function of Sb content appears to show that antimony semi-metallic character is responsible for SnSb pinning on the graphite surface and improvement of their electrochemical properties. Structural and morphological studies…
Advisors/Committee Members: Billaud, Denis (thesis director).
Subjects/Keywords: Nanocomposites
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Pereira Nabais, C. (2008). Contribution à l’étude de l’insertion électrochimique du lithium dans des nanocomposites graphite / Pb et graphite / Sn / Sb : Contribution to the study of lithium electrochemical insertion in graphite / Pb and graphite / Sn / Sb nanocomposites. (Doctoral Dissertation). Université Henri Poincaré – Nancy I. Retrieved from http://www.theses.fr/2008NAN10029
Chicago Manual of Style (16th Edition):
Pereira Nabais, Catarina. “Contribution à l’étude de l’insertion électrochimique du lithium dans des nanocomposites graphite / Pb et graphite / Sn / Sb : Contribution to the study of lithium electrochemical insertion in graphite / Pb and graphite / Sn / Sb nanocomposites.” 2008. Doctoral Dissertation, Université Henri Poincaré – Nancy I. Accessed February 26, 2021.
http://www.theses.fr/2008NAN10029.
MLA Handbook (7th Edition):
Pereira Nabais, Catarina. “Contribution à l’étude de l’insertion électrochimique du lithium dans des nanocomposites graphite / Pb et graphite / Sn / Sb : Contribution to the study of lithium electrochemical insertion in graphite / Pb and graphite / Sn / Sb nanocomposites.” 2008. Web. 26 Feb 2021.
Vancouver:
Pereira Nabais C. Contribution à l’étude de l’insertion électrochimique du lithium dans des nanocomposites graphite / Pb et graphite / Sn / Sb : Contribution to the study of lithium electrochemical insertion in graphite / Pb and graphite / Sn / Sb nanocomposites. [Internet] [Doctoral dissertation]. Université Henri Poincaré – Nancy I; 2008. [cited 2021 Feb 26].
Available from: http://www.theses.fr/2008NAN10029.
Council of Science Editors:
Pereira Nabais C. Contribution à l’étude de l’insertion électrochimique du lithium dans des nanocomposites graphite / Pb et graphite / Sn / Sb : Contribution to the study of lithium electrochemical insertion in graphite / Pb and graphite / Sn / Sb nanocomposites. [Doctoral Dissertation]. Université Henri Poincaré – Nancy I; 2008. Available from: http://www.theses.fr/2008NAN10029

University of Texas – Austin
7.
Spencer, Matthew Walter.
Melt processed polymer-organoclay nanocomposites.
Degree: PhD, Chemical Engineering, 2011, University of Texas – Austin
URL: http://hdl.handle.net/2152/ETD-UT-2011-12-4477
► Polymer nanocomposites with organoclay fillers offer improved properties and performance, providing opportunities for commercial applications. The key to significant property enhancement is to exfoliate the…
(more)
▼ Polymer
nanocomposites with organoclay fillers offer improved properties and performance, providing opportunities for commercial applications. The key to significant property enhancement is to exfoliate the individual organoclay platelets into the polymer matrix to utilize their high aspect ratio and modulus. The affinity between the polymer matrix and the organoclay is one of the most important factors for determining the exfoliation level. Although polar polymers, such as nylon 6, exfoliate the organoclay well, hydrophobic matrices, such as polyolefins, generally do not effectively exfoliate the organoclay. Thus, a significant part of this work investigates various routes to improve polyolefin-organoclay interactions and organoclay exfoliation in these systems.
Nanocomposites formed from organoclay and blends of high density polyethylene and maleic anhydride-grafted high density polyethylene over the entire range of compositions were melt processed to obtain further insights into the 'compatiblizing' role of maleated polyolefins. The organoclay particle aspect ratio was found to initially increase drastically, reach a maximum, and slightly decrease with increased maleation. As the maleation level increases, the relative modulus increases initially and then levels off at higher loadings To a certain extent, the affinity between the polymer and the organoclay can be enhanced by optimizing the organoclay structure for a given polymer matrix. A silanized organoclay was investigated to determine if reduced agglomeration, improved exfoliation, and matrix reinforcement could be achieved in a polypropylene matrix without using a more costly compatibilizer. The silanized organoclay was found to be superior to the non-silanized precursor, but did not achieve the benefits obtained with a compatibilized matrix. Ionomer matrices have also been used as a means of improving organoclay exfoliation. This study examined the effects of ion type (K⁺, Na⁺), neutralization level, and melt index on the nanocomposite morphology and properties. The Na⁺ ionomers appear to have more favorable interactions with the organoclay. Exfoliation and matrix reinforcement tend to increase with decreased melt index and with increased neutralization, except at high levels. In these cases, it is possible that the additional exfoliation results in particles with lower aspect ratios. Composite properties are highly dependent on the particle aspect ratio. Several theories were used to predict the modulus and the thermal expansion coefficient of composites based on the filler aspect ratio. Novel two-population approaches were applied to enable the modeling of
nanocomposites containing organoclay tactoids and single platelets, organoclay particles and glass fibers, or organoclay and elastomer particles. The quantitative agreement between the values predicted using experimentally determined particle aspect ratios and experimental modulus and thermal expansion was vastly improved using these methods.
Advisors/Committee Members: Paul, Donald R. (advisor), Freeman, Benny D. (committee member), Ellison, Christopher J. (committee member), Kovar, Desiderio (committee member), Sanchez, Isaac C. (committee member).
Subjects/Keywords: Polyolefin; Nanocomposites
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APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
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to Zotero / EndNote / Reference
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APA (6th Edition):
Spencer, M. W. (2011). Melt processed polymer-organoclay nanocomposites. (Doctoral Dissertation). University of Texas – Austin. Retrieved from http://hdl.handle.net/2152/ETD-UT-2011-12-4477
Chicago Manual of Style (16th Edition):
Spencer, Matthew Walter. “Melt processed polymer-organoclay nanocomposites.” 2011. Doctoral Dissertation, University of Texas – Austin. Accessed February 26, 2021.
http://hdl.handle.net/2152/ETD-UT-2011-12-4477.
MLA Handbook (7th Edition):
Spencer, Matthew Walter. “Melt processed polymer-organoclay nanocomposites.” 2011. Web. 26 Feb 2021.
Vancouver:
Spencer MW. Melt processed polymer-organoclay nanocomposites. [Internet] [Doctoral dissertation]. University of Texas – Austin; 2011. [cited 2021 Feb 26].
Available from: http://hdl.handle.net/2152/ETD-UT-2011-12-4477.
Council of Science Editors:
Spencer MW. Melt processed polymer-organoclay nanocomposites. [Doctoral Dissertation]. University of Texas – Austin; 2011. Available from: http://hdl.handle.net/2152/ETD-UT-2011-12-4477

Oregon State University
8.
Shir Mohammadi, Meisam.
Developing Design Model for Cellulose Nanocomposites.
Degree: PhD, Materials Science, 2016, Oregon State University
URL: http://hdl.handle.net/1957/59427
► Today nano scale materials are being used for wide range of applications. One promising topic in nano scale materials is using them for reinforcement of…
(more)
▼ Today nano scale materials are being used for wide range of applications. One promising topic in nano scale materials is using them for reinforcement of different polymeric materials to reach desirable stiffness properties. The stiffness of these materials is mostly found experimentally because the nanocomposite community lacks a decent analytical model that can provide a reliable prediction. Modeling can be done using both numerical and analytical methods. Numerical methods can be time-consuming, expensive and need the expertise to implement right assumptions and extrapolate useful data. But they can be more reliable, if done correctly, compared with the analytical method. Analytical methods use a mathematical equation that has been derived considering the physics of the problem. Analytical methods are equations that predict properties on
nanocomposites based on properties of components at different conditions (e.g., temperature, and more) and are more desired. For this work, we used a new Monte Carlo finite element analysis (FEA) method as a numerical method to model the stiffness of different
nanocomposites and compared them with different analytical models to find the most accurate model that can predict the stiffness of
nanocomposites as a function of its components? properties. We then com- pared different models with experimental results using cellulose nanocrystal composites.
Advisors/Committee Members: Nairn, John (advisor), Albertani, Roberto (committee member).
Subjects/Keywords: Nanocomposites; Nanocomposites (Materials) – Mechanical properties – Mathematical models
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Shir Mohammadi, M. (2016). Developing Design Model for Cellulose Nanocomposites. (Doctoral Dissertation). Oregon State University. Retrieved from http://hdl.handle.net/1957/59427
Chicago Manual of Style (16th Edition):
Shir Mohammadi, Meisam. “Developing Design Model for Cellulose Nanocomposites.” 2016. Doctoral Dissertation, Oregon State University. Accessed February 26, 2021.
http://hdl.handle.net/1957/59427.
MLA Handbook (7th Edition):
Shir Mohammadi, Meisam. “Developing Design Model for Cellulose Nanocomposites.” 2016. Web. 26 Feb 2021.
Vancouver:
Shir Mohammadi M. Developing Design Model for Cellulose Nanocomposites. [Internet] [Doctoral dissertation]. Oregon State University; 2016. [cited 2021 Feb 26].
Available from: http://hdl.handle.net/1957/59427.
Council of Science Editors:
Shir Mohammadi M. Developing Design Model for Cellulose Nanocomposites. [Doctoral Dissertation]. Oregon State University; 2016. Available from: http://hdl.handle.net/1957/59427
9.
Vanmarcke, Audrey.
Etude des relations élaboration, morphologie et comportement mécanique de mélanges et (nano)composites à base d’amidon : Relationships between processing, morphology and mechanical behaviour of starch based blends and (nano)composites.
Degree: Docteur es, Physique et science des matériaux, 2017, Université Lille I – Sciences et Technologies
URL: http://www.theses.fr/2017LIL10153
► L’amidon, de par son faible coût et son abondance, est un candidat de choix dans le développement de nouveaux biopolymères. Cependant, les propriétés mécaniques de…
(more)
▼ L’amidon, de par son faible coût et son abondance, est un candidat de choix dans le développement de nouveaux biopolymères. Cependant, les propriétés mécaniques de l’amidon thermoplastique (TPS) étant inférieures à celles des polymères pétro-sourcés, il est très souvent mélangé à une polyoléfine (PO) résultant en un mélange incompatible dont la morphologie doit être optimisée. L’objectif de cette étude est d’améliorer la compatibilité de mélanges PO/TPS en modulant les propriétés de l’interface via l’utilisation de polyoléfines de polarité différente d’une part, et d’autre part, par l’ajout de nanocharges à l’interface du mélange. Le suivi de l’évolution de la structure des mélanges par SAXS lors d’essais de traction in situ a montré que les premiers signes de décohésion apparaissent pour des taux de déformation plus élevés lorsque le TPS est mélangé avec une PO plus polaire, indiquant l’existence d’une meilleure interface. Des nanocharges de carbonate de calcium (CaCO3) de polarité différente ont ensuite été ajoutées aux mélanges. Selon leur polarité, les CaCO3 peuvent être localisées à l’interface ou dans la phase dispersée amylacée donnant lieu à une réduction ou à une augmentation de sa taille selon la nature de la PO. L’étude du comportement mécanique a montré une augmentation des contraintes avec la PO la plus polaire indépendamment de la localisation des CaCO3 dans le mélange. Ceci met en évidence le fait qu’une compatibilisation par ajout de nanocharges ne nécessite pas uniquement de contrôler la dispersion pour les placer à l’interface du mélange, il faut également prendre en compte les propriétés intrinsèques de chaque composant.
Among the various bio-based polymers considered as potential alternative of oil-based plastics, starch appears as one of the most interesting materials due to its wide availability and low cost. However, thermoplastic starch (TPS) exhibits poor mechanical properties as compared to synthetic polymers. One strategy used to overcome this drawback consists in blending TPS with a polyolefin (PO) resulting in an incompatible blend which morphology has to be optimized. In that frame, the main objective of this work is to enhance the mechanical performances of PO/TPS blends via a modulation of the interface properties by using polyolefins with different polarity and by adding nanoparticles to compatibilize the blends. The structural evolution of the blends induced by strain has been followed in situ by SAXS and revealed that the first signs of decohesion appear at higher strain rates when the TPS is mixed with the more polar polyolefin indicating a better adhesion in this blend. Calcium carbonate nanoparticles (CaCO3) with different polarities were then added to the blends. According to their polarity, the CaCO3 were located at the interface or in the dispersed phase composed of TPS, resulting in a refinement or a coarsening of the morphology depending on the polyolefin used. The study of the mechanical behavior shows an increase in the tensile properties for the more polar PO. These…
Advisors/Committee Members: Gaucher, Valérie (thesis director), Duquesne, Sophie (thesis director), Stoclet, Grégory (thesis director).
Subjects/Keywords: Nanocomposites; Compatibilisation; 668.42
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Vanmarcke, A. (2017). Etude des relations élaboration, morphologie et comportement mécanique de mélanges et (nano)composites à base d’amidon : Relationships between processing, morphology and mechanical behaviour of starch based blends and (nano)composites. (Doctoral Dissertation). Université Lille I – Sciences et Technologies. Retrieved from http://www.theses.fr/2017LIL10153
Chicago Manual of Style (16th Edition):
Vanmarcke, Audrey. “Etude des relations élaboration, morphologie et comportement mécanique de mélanges et (nano)composites à base d’amidon : Relationships between processing, morphology and mechanical behaviour of starch based blends and (nano)composites.” 2017. Doctoral Dissertation, Université Lille I – Sciences et Technologies. Accessed February 26, 2021.
http://www.theses.fr/2017LIL10153.
MLA Handbook (7th Edition):
Vanmarcke, Audrey. “Etude des relations élaboration, morphologie et comportement mécanique de mélanges et (nano)composites à base d’amidon : Relationships between processing, morphology and mechanical behaviour of starch based blends and (nano)composites.” 2017. Web. 26 Feb 2021.
Vancouver:
Vanmarcke A. Etude des relations élaboration, morphologie et comportement mécanique de mélanges et (nano)composites à base d’amidon : Relationships between processing, morphology and mechanical behaviour of starch based blends and (nano)composites. [Internet] [Doctoral dissertation]. Université Lille I – Sciences et Technologies; 2017. [cited 2021 Feb 26].
Available from: http://www.theses.fr/2017LIL10153.
Council of Science Editors:
Vanmarcke A. Etude des relations élaboration, morphologie et comportement mécanique de mélanges et (nano)composites à base d’amidon : Relationships between processing, morphology and mechanical behaviour of starch based blends and (nano)composites. [Doctoral Dissertation]. Université Lille I – Sciences et Technologies; 2017. Available from: http://www.theses.fr/2017LIL10153

University of Alberta
10.
Nelson-Fitzpatrick, Nathaniel.
Novel materials for the design of cantilever
transducers.
Degree: PhD, Department of Electrical and Computer
Engineering, 2011, University of Alberta
URL: https://era.library.ualberta.ca/files/9k41zf62j
► Micro and nanocantilever structures have been used as transducers for a plethora of sensor applications. These transducer technologies have similar shapes, but the material properties…
(more)
▼ Micro and nanocantilever structures have been used as
transducers for a plethora of sensor applications. These transducer
technologies have similar shapes, but the material properties and
geometrical optimizations needed to improve sensitivity are rather
different. This is a record of two different material and design
strategies undertaken for static and resonant cantilever sensors.
For resonant cantilever sensors we desire a material that is stiff
and light. We fabricated silicon nanocantilevers using electron
beam lithography and a cryogenic etching technique and assayed
their resonance frequencies. The brittle nature of surface machined
Si necessitated the move towards nanocantilevers made from glassy
materials like Si3N4 and SiCN, which are difficult to deposit
reliably in thicknesses below 50 nm. Alternatively, we fabricated
and characterized atomic layer deposited (ALD) TiN films for
nanocantilevers. We assayed chemical and physical characteristics
of TiN films deposited between 120˚C and 300˚C with XPS, XRD,
ellipsometry, and wafer bowing. We then fabricated nanoresonator
beams out of TiN deposited at 200˚C. For static cantilever sensors
we designed an Au-Ta nanocomposite alloy. Combining Au and Ta using
magnetron co-sputtering we synthesized a material with low
intrinsic stress while retaining the chemical affinity of Au to
thiolized molecules. XRD, SEM, AFM, nanoindentation, stress
measurements and nanocantilever resonance tests were performed to
determine the bulk and surface characteristics of these Au-Ta
alloys. The FCC <111> structure of Au was retained in
films below 50 at.% Ta. Young's modulus was increased slightly by
the addition of Ta while hardness was increased fivefold. The
film's deposited stress was relieved upon inclusion of 5 at.% Ta.
Chemical characteristics of Au-Ta films over the range of Pure Au
to Au 40 at.% Ta was assessed using contact angle measurements,
XPS, FTIR and cantilever measurements. As Ta concentration was
increased the binding of 1-dodecanethiol was hindered. Low Ta films
(5 and 10 at.% Ta) exhibited reduced but significant thiol binding,
while higher concentrations displayed insignificant binding. We
fabricated geometrically optimized cantilevers with a theoretical
spring constant as low as 10.5 mN/m. The detection of dodecanethiol
was demonstrated with these cantilevers, confirming intrinsic
sensitivity to thiolized molecules.
Subjects/Keywords: nanocomposites; microcantilever; transducers
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Nelson-Fitzpatrick, N. (2011). Novel materials for the design of cantilever
transducers. (Doctoral Dissertation). University of Alberta. Retrieved from https://era.library.ualberta.ca/files/9k41zf62j
Chicago Manual of Style (16th Edition):
Nelson-Fitzpatrick, Nathaniel. “Novel materials for the design of cantilever
transducers.” 2011. Doctoral Dissertation, University of Alberta. Accessed February 26, 2021.
https://era.library.ualberta.ca/files/9k41zf62j.
MLA Handbook (7th Edition):
Nelson-Fitzpatrick, Nathaniel. “Novel materials for the design of cantilever
transducers.” 2011. Web. 26 Feb 2021.
Vancouver:
Nelson-Fitzpatrick N. Novel materials for the design of cantilever
transducers. [Internet] [Doctoral dissertation]. University of Alberta; 2011. [cited 2021 Feb 26].
Available from: https://era.library.ualberta.ca/files/9k41zf62j.
Council of Science Editors:
Nelson-Fitzpatrick N. Novel materials for the design of cantilever
transducers. [Doctoral Dissertation]. University of Alberta; 2011. Available from: https://era.library.ualberta.ca/files/9k41zf62j

University of Manchester
11.
Albozahid, Muayad.
Design of novel high modulus TPUs for nanocomposite applications.
Degree: PhD, 2018, University of Manchester
URL: https://www.research.manchester.ac.uk/portal/en/theses/design-of-novel-high-modulus-tpus-for-nanocomposite-applications(ce7989db-b70d-46a3-8c11-6793a6d9e235).html
;
https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.740372
► This thesis focuses on designing thermoplastic nanocomposites with good mechanical, thermal and electrical properties. Thermoplastic nanocomposites, which are used in this work, are composed of…
(more)
▼ This thesis focuses on designing thermoplastic nanocomposites with good mechanical, thermal and electrical properties. Thermoplastic nanocomposites, which are used in this work, are composed of thermoplastic polyurethane (TPU) matrices and graphene nanofillers (GNFs). TPUs were synthesised with large ratios of hard segments (HS), including 60, 70 and 80 Wt. % HS. The influences of HS content and annealing treatment at 80 °C on the thermal, electrical and mechanical properties of TPUs and TPUs/GNFs samples have been investigated. The crystallinity, Tg, tensile strength, yield strength, and tensile modulus of all pure TPU samples are seen to increase after annealing treatment due to microphase separation. This also depends on the HS content in order to achieve better properties with various annealing times. The nanofillers include graphene nanoplatelets (GNP), graphene oxide (GO), and reduced graphene oxide (rGO). Various dispersion routes have been utilised to achieve better dispersion and distribution of the nanofillers. In-situ polymerisation, melt-compounding and solution-mixing techniques have been used to study dispersion effects and further moulding by injection moulding to prepare new TPU nanocomposites. Filler-matrix and filler-filler interfaces significantly influence the final performance of TPU nanocomposites. There is therefore a balance to be struck in the design of graphene-based TPU nanocomposites between the ability to achieve higher loadings of reinforcement and the reduction in effective Youngâs modulus of the reinforcement as the number of layers in the nanofillers is increased. Effective stress transfer is achieved as a result of both dispersion and interfacial interaction. It has been demonstrated that graphene plays a reinforcing role in nanocomposites through its effective modulus as well as bonding with TPU phases. The first nanofiller studied is GNP, which shows good mechanical, thermal and electrical properties. The in-situ polymerisation approach was found to be the best dispersion method compared to melt compounding and solution mixing, as the optimum properties of GNP nanofillers can be achieved in the TPU/70 HS matrix. The TPU/70 HS had higher values compared to both TPU/60 HS and TPU/80 HS. However, the preparation of GO and rGO incorporating TPU/70 HS was not successfully synthesised due to the suppression of chain growth during polymerisation. Thus, the melt-compounding process was used instead for both GO- and rGO-based TPU matrices. TPU/70/GO nanocomposites displayed better mechanical performance compared to TPU/70/rGO nanocomposites, as a result of greater interaction between TPUs chains and fillers surfaces. It was found that the percolation thresholds for GO- and rGO-filled nanocomposites were significantly lower than that of GNP-filled nanocomposites due to their higher aspect ratio. Annealing treatment showed lower mechanical properties of TPU nanocomposite samples compared to non-annealed TPU nanocomposite samples, resulting from disruption of phase separation and restacking…
Subjects/Keywords: 620; TPUs nanocomposites
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Albozahid, M. (2018). Design of novel high modulus TPUs for nanocomposite applications. (Doctoral Dissertation). University of Manchester. Retrieved from https://www.research.manchester.ac.uk/portal/en/theses/design-of-novel-high-modulus-tpus-for-nanocomposite-applications(ce7989db-b70d-46a3-8c11-6793a6d9e235).html ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.740372
Chicago Manual of Style (16th Edition):
Albozahid, Muayad. “Design of novel high modulus TPUs for nanocomposite applications.” 2018. Doctoral Dissertation, University of Manchester. Accessed February 26, 2021.
https://www.research.manchester.ac.uk/portal/en/theses/design-of-novel-high-modulus-tpus-for-nanocomposite-applications(ce7989db-b70d-46a3-8c11-6793a6d9e235).html ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.740372.
MLA Handbook (7th Edition):
Albozahid, Muayad. “Design of novel high modulus TPUs for nanocomposite applications.” 2018. Web. 26 Feb 2021.
Vancouver:
Albozahid M. Design of novel high modulus TPUs for nanocomposite applications. [Internet] [Doctoral dissertation]. University of Manchester; 2018. [cited 2021 Feb 26].
Available from: https://www.research.manchester.ac.uk/portal/en/theses/design-of-novel-high-modulus-tpus-for-nanocomposite-applications(ce7989db-b70d-46a3-8c11-6793a6d9e235).html ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.740372.
Council of Science Editors:
Albozahid M. Design of novel high modulus TPUs for nanocomposite applications. [Doctoral Dissertation]. University of Manchester; 2018. Available from: https://www.research.manchester.ac.uk/portal/en/theses/design-of-novel-high-modulus-tpus-for-nanocomposite-applications(ce7989db-b70d-46a3-8c11-6793a6d9e235).html ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.740372

University of Manchester
12.
Innes, James.
Graphene nanoplatelet reinforced elastomers for the Oil
& Gas Industry.
Degree: 2019, University of Manchester
URL: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:320567
► Graphene related materials have recently become of great interest for polymer reinforcement owing to their high Young’s modulus and aspect ratio. These properties, as well…
(more)
▼ Graphene related materials have recently become of
great interest for polymer reinforcement owing to their high
Young’s modulus and aspect ratio. These properties, as well as
good electrical and thermal conductivity, have led to a surge in
publications for
nanocomposites with multifunctional properties.
Historically, carbon black has been the workhorse of the elastomer
industry, offering low cost, good mechanical reinforcement and
versatility through different black grades. However, carbon black
is not necessarily the ideal filler for all applications. For
example, carbon black reinforced elastomers suffer from rapid gas
decompression damage when applied to the oil and gas industry.
Rapid gas decompression leads to blistering and cracking of
elastomer seals because sudden pressure changes cause gases
dissolved within the elastomer to expand. In order to understand
how these new graphene fillers affect elastomer reinforcement and
how they differ from carbon black, a number of graphene
nanoplatelet reinforced NBR compounds were produced and compared
with the carbon black equivalent. Mechanical testing demonstrated
that the GnPs reinforce the NBR matrix more effectively than CB in
terms of modulus, hardness and tear strength. Furthermore, GnPs
help maintain the elastomers high strain at break, whereas the
inclusion of carbon black leads to a reduction in elongation at
break. However, the ultimate tensile strength for GnP-NBR and
CB-NBR is similar at equivalent loadings. The modulus and tear
energy were modelled using elastomer theory to evaluate how the
GnPs give these improved mechanical properties compared with carbon
black. Characterisation by Raman spectroscopy, SEM and AFM has been
used alongside the mechanical testing in order to understand how
the shape of the filler may affect reinforcement. The aspect ratio
of the filler has been identified as a crucial parameter in the
elastomer reinforcement. Transport properties of the composites
were measured in order to suggest the suitability of the filler for
oil and gas applications. The results suggest that graphene
nanoplatelets may have a future in the elastomer industry offering
potential for new and multifunctional properties. Opportunities for
further work have been identified including suggestions for future
work.
Advisors/Committee Members: KINLOCH, IAN IA, Young, Robert, Kinloch, Ian.
Subjects/Keywords: nanocomposites; elastomer; graphene
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Innes, J. (2019). Graphene nanoplatelet reinforced elastomers for the Oil
& Gas Industry. (Doctoral Dissertation). University of Manchester. Retrieved from http://www.manchester.ac.uk/escholar/uk-ac-man-scw:320567
Chicago Manual of Style (16th Edition):
Innes, James. “Graphene nanoplatelet reinforced elastomers for the Oil
& Gas Industry.” 2019. Doctoral Dissertation, University of Manchester. Accessed February 26, 2021.
http://www.manchester.ac.uk/escholar/uk-ac-man-scw:320567.
MLA Handbook (7th Edition):
Innes, James. “Graphene nanoplatelet reinforced elastomers for the Oil
& Gas Industry.” 2019. Web. 26 Feb 2021.
Vancouver:
Innes J. Graphene nanoplatelet reinforced elastomers for the Oil
& Gas Industry. [Internet] [Doctoral dissertation]. University of Manchester; 2019. [cited 2021 Feb 26].
Available from: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:320567.
Council of Science Editors:
Innes J. Graphene nanoplatelet reinforced elastomers for the Oil
& Gas Industry. [Doctoral Dissertation]. University of Manchester; 2019. Available from: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:320567

Kansas State University
13.
Manepalli, Pavan Harshit.
Use of
thermoplastic starch in poly(lactic acid)/poly(butylene
adipate-co-terephthalate) based nanocomposites for bio-based food
packaging.
Degree: PhD, Department of Grain Science and
Industry, 2019, Kansas State University
URL: http://hdl.handle.net/2097/39378
► Poly(lactic acid) (PLA) is the most common bio-based & compostable polymer available commercially that is cost competitive and combines a range of desirable properties like…
(more)
▼ Poly(lactic acid) (PLA) is the most common bio-based
& compostable polymer available commercially that is cost
competitive and combines a range of desirable properties like melt
processability, high strength and modulus. The films made from this
aliphatic polyester tend to be brittle which can be overcome by
blending PLA with another bio-based polymer with high flexibility
poly(butylene adipate-co-terephthalate) (PBAT), but the resultant
blend is only biodegradable in composting conditions. The primary
focus of this study was incorporation of thermoplastic starch (TPS)
in PLA/PBAT blends to increase the rate of biodegradability and
decrease the cost. In the first part of this study, as a
preliminary step only PLA/PBAT blends were investigated along with
nanofiller nanocrystalline cellulose (NCC) as a nanofiller for
enhancing mechanical and barrier properties. Melt extrusion was
used for preparation of
nanocomposites and 200 microns thick films
were formed by melt pressing. PBAT enhanced elongation but NCC did
not have any positive impact on the mechanical and barrier
properties of the
nanocomposites as NCC was aggregated in the
polymer matrix due to the difference in polarity based on the
hydrophilic nature of the nanofiller and hydrophobic nature of the
polymer matrix.
In the second part of study, up to 40%TPS was
blended along with the PLA/PBAT/NCC
nanocomposites. Joncryl (0.5%)
was used as a compatibilizer. TPS addition decreased the mechanical
and barrier properties (Tensile strength (TS) = 15- 30 MPa,
Elongation at break (EB) = 6-12%, Water vapor permeability (WVP) =
1.6-8.3 g.mm/kPa.h.m²), although addition of NCC helped in
increasing the TS and decreasing the WVP. Dispersion of NCC
improved with the addition of hydrophilic TPS. Analytical
techniques including transmission electron microscopy,
fourier-transform infrared spectroscopy, differential scanning
calorimetry were used to study the polymer-polymer and
polymer-nanofiller interactions.
Optimization study of
PLA/PBAT/TPS/NCC
nanocomposites was done using mixture response
surface methods. Quadratic models with good predicted R² (between
84.3% and 97.59%) were developed for all the responses.
Optimization study was done that could yield films with optimum
properties comparable to commercial plastics and maximizing the
level of TPS. Films with optimum properties (TS = 29.5 MPa, EB =
12%, WVP = 1.99 g.mm/kPa.h.m²) were predicted at levels of 64.3%
PLA, 14.5% PBAT, 18% TPS and 2.6% NCC along with 0.5% Joncryl. The
improved mechanical and barrier performance suggested that
PLA/PBAT/TPS/NCC
nanocomposites have potential use in food
packaging applications.
In the final phase of study, mathematical
modeling was used to understand the influence of nanofiller (NCC)
on the mechanical and barrier properties of the
nanocomposites. The
modified Halpin-Tsai equation was used to model the elastic modulus
of the
nanocomposites, while the modified Nielsen equation was used
to model the WVP as a function of nanofiller content, geometry,
strength and interactions with…
Advisors/Committee Members: Sajid Alavi.
Subjects/Keywords: Food
Packaging;
Nanocomposites
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APA (6th Edition):
Manepalli, P. H. (2019). Use of
thermoplastic starch in poly(lactic acid)/poly(butylene
adipate-co-terephthalate) based nanocomposites for bio-based food
packaging. (Doctoral Dissertation). Kansas State University. Retrieved from http://hdl.handle.net/2097/39378
Chicago Manual of Style (16th Edition):
Manepalli, Pavan Harshit. “Use of
thermoplastic starch in poly(lactic acid)/poly(butylene
adipate-co-terephthalate) based nanocomposites for bio-based food
packaging.” 2019. Doctoral Dissertation, Kansas State University. Accessed February 26, 2021.
http://hdl.handle.net/2097/39378.
MLA Handbook (7th Edition):
Manepalli, Pavan Harshit. “Use of
thermoplastic starch in poly(lactic acid)/poly(butylene
adipate-co-terephthalate) based nanocomposites for bio-based food
packaging.” 2019. Web. 26 Feb 2021.
Vancouver:
Manepalli PH. Use of
thermoplastic starch in poly(lactic acid)/poly(butylene
adipate-co-terephthalate) based nanocomposites for bio-based food
packaging. [Internet] [Doctoral dissertation]. Kansas State University; 2019. [cited 2021 Feb 26].
Available from: http://hdl.handle.net/2097/39378.
Council of Science Editors:
Manepalli PH. Use of
thermoplastic starch in poly(lactic acid)/poly(butylene
adipate-co-terephthalate) based nanocomposites for bio-based food
packaging. [Doctoral Dissertation]. Kansas State University; 2019. Available from: http://hdl.handle.net/2097/39378

University of Texas – Austin
14.
Wu, Hao, Doctorate in materials science and engineering.
Flame retardant nylon 6 nanocomposite fibers : processing and characterization.
Degree: PhD, Materials science and engineering, 2016, University of Texas – Austin
URL: http://hdl.handle.net/2152/44027
► One type of engineering thermoplastic polymers that has significant commercial application is nylon. However, flammability and melt dripping is a major problem for polymers like…
(more)
▼ One type of engineering thermoplastic polymers that has significant commercial application is nylon. However, flammability and melt dripping is a major problem for polymers like nylon 6 because it can cause fire to spread to other flammable objects and escalate the fire in a short amount of time. Although high performance inherently flame-retardant (FR) fibers have been discovered and various durable FR finishes for nylon have been developed, cost-effective flame retardant nylon and nylon blend fabrics remain a challenge. The goal of this research is to develop non-drip inherently FR nylon 6 fibers as a cost-effective alternative for use in high volume FR fabrics. In this dissertation, a cost effective alternative of producing non-drip inherently flame retardant nylon 6 fibers with balanced performances was developed based on polymer nanocomposite systems incorporating intumescent FR and nanoclay additives. Nanoclay was added to the system to reduce FR particle loading and capitalize on the synergistic effect between nanoclay and intumescent additives. Adequate dispersion of the additives with exfoliation of the nanoclay platelets was observed using TEM and XRD. Injection molding was used as a tool for screening the performance of the nanocomposite formulations in bulk form before the fiber spinning process. Results of injection molded FR PA6
nanocomposites suggest that although a good FR performance could be achieved, mechanical properties, especially ductility, were significantly compromised. To solve this problem, rubber toughening was achieved using a thermoplastic elastomer with significant success in recovering material ductility without compromising FR performance. Ultra-sonication of the FR additives prior the fiber spinning could effectively reduce the FR particle size distribution. Single fiber tensile tests show that PA6/FR/elastomer/nanoclay formulation is able to improve both the tenacity and elongation at break from the original PA6/FR system. Moreover, flammability tests suggest that the nanocomposite FR fibers have significantly lower heat release properties and are able to retain a fibrous shape after combustion indicating the non-dripping property. Therefore, our experiments have yielded improved non-drip FR properties in PA6 through the infusion of nanoclay and non-halogenated intumescent particles (FR) via co-rotating twin-screw extrusion. One major implication of these results is that with the new non-drip FR nylon 6 fiber, it would be possible to achieve blends with higher nylon content than customary and not compromise the FR performance of the fabric, thus providing a cost effective solution for high-volume applications.
Advisors/Committee Members: Krifa, Mourad (advisor), Koo, Joseph H. (advisor), Li, Wei (committee member), Ellison, Christopher J (committee member), Chen, Jonathan Y (committee member).
Subjects/Keywords: Flame retardant; Nanocomposites
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APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Wu, Hao, D. i. m. s. a. e. (2016). Flame retardant nylon 6 nanocomposite fibers : processing and characterization. (Doctoral Dissertation). University of Texas – Austin. Retrieved from http://hdl.handle.net/2152/44027
Chicago Manual of Style (16th Edition):
Wu, Hao, Doctorate in materials science and engineering. “Flame retardant nylon 6 nanocomposite fibers : processing and characterization.” 2016. Doctoral Dissertation, University of Texas – Austin. Accessed February 26, 2021.
http://hdl.handle.net/2152/44027.
MLA Handbook (7th Edition):
Wu, Hao, Doctorate in materials science and engineering. “Flame retardant nylon 6 nanocomposite fibers : processing and characterization.” 2016. Web. 26 Feb 2021.
Vancouver:
Wu, Hao Dimsae. Flame retardant nylon 6 nanocomposite fibers : processing and characterization. [Internet] [Doctoral dissertation]. University of Texas – Austin; 2016. [cited 2021 Feb 26].
Available from: http://hdl.handle.net/2152/44027.
Council of Science Editors:
Wu, Hao Dimsae. Flame retardant nylon 6 nanocomposite fibers : processing and characterization. [Doctoral Dissertation]. University of Texas – Austin; 2016. Available from: http://hdl.handle.net/2152/44027

University of Oklahoma
15.
Demirtas, Mehmet Selim.
Fabrication, Characterization and Modeling of Aligned Polyacrylonitrile-Based Electrospun Carbon Nanofibers.
Degree: PhD, 2018, University of Oklahoma
URL: http://hdl.handle.net/11244/301380
► Electrospinning is widely used to produce carbon nanofiber from polyacrylonitrile (PAN). The alignment of fibers may vary depending on electrospinning condition. In this study, an…
(more)
▼ Electrospinning is widely used to produce carbon nanofiber from polyacrylonitrile (PAN). The alignment of fibers may vary depending on electrospinning condition. In this study, an electrospinning setup is developed to fabricate aligned and uniform yarns from PAN, employing an adjustable rotating disc. Effects of relative humidity (RH) on fiber diameter and mechanical properties of electrospun, stabilized and carbonized nanofibers are investigated. Average fiber diameter increases from 365 nm to 602 nm by increasing RH 22% to 60%. Additionally, mechanical properties are reduced by increasing RH. Nanofibers are generated at low RH show poor mechanical properties. 22% RH yields the best mechanical properties.
Collector geometry and rotating speed influence electrospun nanofiber alignment. The nanofiber diameter distribution, porosity, orientation, and mechanical properties are investigated. A unique approach is adopted to test the nanofiber films in tension using a dynamic mechanical analyzer (DMA). Furthermore, 2-dimensional FEM analysis is performed to investigate electric field distribution around the collector. It is observed that the speed of the rotating disc can help improve the alignment of nanofibers in the film. It is also absolved that the electric field is more intense and uniform on the collector surface for wire and mesh type collectors compared to foil collectors. Nanofibers electrospun with wire type collector show the highest alignment due to the intense uniform electric field and tensile properties of carbonized nanofiber films. Electrode geometry is another electrospinning element that influences the fiber alignment. Three different tip electrode systems are investigated; single blind needle, flash needle, where the needle is located in a copper cylinder and completely flush with the edge of the cylinder, and protruded needle, where the needle passes through a copper cylinder and protrudes 0.5 mm past the edge of the cylinder. Similarly, 2D FEM is studied to obtain electric field distribution of the needle region. The alignment and diameter of nanofibers vary by changes in the needle system when all other electrospinning parameters are kept constant. The flash and protruded type of electrode yields more uniform and better fiber alignment. Furthermore, Taylor cone and straight jet formation dependence on flow rate and applied voltage are investigated using a high speed camera. an average fiber diameter of 422 nm is obtained for needle type while 389 nm is obtained for the protruded needle and fiber alignment was also improved with varying electrode types.
Stabilization conditions influence mechanical properties of carbon nanofibers. The effects of hot drawing of electrospun PAN nanofiber yarns and pre-stress during stabilization on the mechanical properties of stabilized yarns is investigated. The as-spun PAN nanofibers are mechanically stretched to stretch ratios (λ) of 1, 2 and 3 at 135 °C and subsequently stabilized at 260°C in air for 180 min under different mechanical pre-stress conditions, up…
Advisors/Committee Members: Saha, Mrinal C. (advisor), Altan, M. Cengiz (advisor), Liu, Yingtao (committee member), Raman, Shivakumar (committee member), Siddique, Zahed (committee member).
Subjects/Keywords: Nanocomposites; Electrospinning; Nanofibers
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Demirtas, M. S. (2018). Fabrication, Characterization and Modeling of Aligned Polyacrylonitrile-Based Electrospun Carbon Nanofibers. (Doctoral Dissertation). University of Oklahoma. Retrieved from http://hdl.handle.net/11244/301380
Chicago Manual of Style (16th Edition):
Demirtas, Mehmet Selim. “Fabrication, Characterization and Modeling of Aligned Polyacrylonitrile-Based Electrospun Carbon Nanofibers.” 2018. Doctoral Dissertation, University of Oklahoma. Accessed February 26, 2021.
http://hdl.handle.net/11244/301380.
MLA Handbook (7th Edition):
Demirtas, Mehmet Selim. “Fabrication, Characterization and Modeling of Aligned Polyacrylonitrile-Based Electrospun Carbon Nanofibers.” 2018. Web. 26 Feb 2021.
Vancouver:
Demirtas MS. Fabrication, Characterization and Modeling of Aligned Polyacrylonitrile-Based Electrospun Carbon Nanofibers. [Internet] [Doctoral dissertation]. University of Oklahoma; 2018. [cited 2021 Feb 26].
Available from: http://hdl.handle.net/11244/301380.
Council of Science Editors:
Demirtas MS. Fabrication, Characterization and Modeling of Aligned Polyacrylonitrile-Based Electrospun Carbon Nanofibers. [Doctoral Dissertation]. University of Oklahoma; 2018. Available from: http://hdl.handle.net/11244/301380

University of Manchester
16.
Innes, James.
Graphene nanoplatelet reinforced elastomers for the oil & gas industry.
Degree: PhD, 2019, University of Manchester
URL: https://www.research.manchester.ac.uk/portal/en/theses/graphene-nanoplatelet-reinforced-elastomers-for-the-oil –
gas-industry(6b3dd153-cd1d-4b62-95c9-0f851b98f357).html
;
https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.816310
► Graphene related materials have recently become of great interest for polymer reinforcement owing to their high Young's modulus and aspect ratio. These properties, as well…
(more)
▼ Graphene related materials have recently become of great interest for polymer reinforcement owing to their high Young's modulus and aspect ratio. These properties, as well as good electrical and thermal conductivity, have led to a surge in publications for nanocomposites with multifunctional properties. Historically, carbon black has been the workhorse of the elastomer industry, offering low cost, good mechanical reinforcement and versatility through different black grades. However, carbon black is not necessarily the ideal filler for all applications. For example, carbon black reinforced elastomers suffer from rapid gas decompression damage when applied to the oil and gas industry. Rapid gas decompression leads to blistering and cracking of elastomer seals because sudden pressure changes cause gases dissolved within the elastomer to expand. In order to understand how these new graphene fillers affect elastomer reinforcement and how they differ from carbon black, a number of graphene nanoplatelet reinforced NBR compounds were produced and compared with the carbon black equivalent. Mechanical testing demonstrated that the GnPs reinforce the NBR matrix more effectively than CB in terms of modulus, hardness and tear strength. Furthermore, GnPs help maintain the elastomers high strain at break, whereas the inclusion of carbon black leads to a reduction in elongation at break. However, the ultimate tensile strength for GnP-NBR and CB-NBR is similar at equivalent loadings. The modulus and tear energy were modelled using elastomer theory to evaluate how the GnPs give these improved mechanical properties compared with carbon black. Characterisation by Raman spectroscopy, SEM and AFM has been used alongside the mechanical testing in order to understand how the shape of the filler may affect reinforcement. The aspect ratio of the filler has been identified as a crucial parameter in the elastomer reinforcement. Transport properties of the composites were measured in order to suggest the suitability of the filler for oil and gas applications. The results suggest that graphene nanoplatelets may have a future in the elastomer industry offering potential for new and multifunctional properties. Opportunities for further work have been identified including suggestions for future work.
Subjects/Keywords: nanocomposites; elastomer; graphene
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Innes, J. (2019). Graphene nanoplatelet reinforced elastomers for the oil & gas industry. (Doctoral Dissertation). University of Manchester. Retrieved from https://www.research.manchester.ac.uk/portal/en/theses/graphene-nanoplatelet-reinforced-elastomers-for-the-oil – gas-industry(6b3dd153-cd1d-4b62-95c9-0f851b98f357).html ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.816310
Chicago Manual of Style (16th Edition):
Innes, James. “Graphene nanoplatelet reinforced elastomers for the oil & gas industry.” 2019. Doctoral Dissertation, University of Manchester. Accessed February 26, 2021.
https://www.research.manchester.ac.uk/portal/en/theses/graphene-nanoplatelet-reinforced-elastomers-for-the-oil – gas-industry(6b3dd153-cd1d-4b62-95c9-0f851b98f357).html ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.816310.
MLA Handbook (7th Edition):
Innes, James. “Graphene nanoplatelet reinforced elastomers for the oil & gas industry.” 2019. Web. 26 Feb 2021.
Vancouver:
Innes J. Graphene nanoplatelet reinforced elastomers for the oil & gas industry. [Internet] [Doctoral dissertation]. University of Manchester; 2019. [cited 2021 Feb 26].
Available from: https://www.research.manchester.ac.uk/portal/en/theses/graphene-nanoplatelet-reinforced-elastomers-for-the-oil – gas-industry(6b3dd153-cd1d-4b62-95c9-0f851b98f357).html ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.816310.
Council of Science Editors:
Innes J. Graphene nanoplatelet reinforced elastomers for the oil & gas industry. [Doctoral Dissertation]. University of Manchester; 2019. Available from: https://www.research.manchester.ac.uk/portal/en/theses/graphene-nanoplatelet-reinforced-elastomers-for-the-oil – gas-industry(6b3dd153-cd1d-4b62-95c9-0f851b98f357).html ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.816310
17.
Ghebache, Zohra.
Contribution à l'élaboration de Nano-composites à Base de Polymère Conducteur.
Degree: 2016, Université M'Hamed Bougara Boumerdès
URL: http://dlibrary.univ-boumerdes.dz:8080/handle/123456789/2895
138 p. :ill.; 30 cm
L'objectif du présent travail est la synthèse et caractérisation des nanocomposites polymères conducteurs (transducteurs partie sensible de biocapteurs) à base de poly(aniline) dopée par un acide solide (zéolithe HY) greffé avec différents
Subjects/Keywords: Nanocomposites; Nanoparticules; Polymères conducteurs
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Ghebache, Z. (2016). Contribution à l'élaboration de Nano-composites à Base de Polymère Conducteur. (Thesis). Université M'Hamed Bougara Boumerdès. Retrieved from http://dlibrary.univ-boumerdes.dz:8080/handle/123456789/2895
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Ghebache, Zohra. “Contribution à l'élaboration de Nano-composites à Base de Polymère Conducteur.” 2016. Thesis, Université M'Hamed Bougara Boumerdès. Accessed February 26, 2021.
http://dlibrary.univ-boumerdes.dz:8080/handle/123456789/2895.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Ghebache, Zohra. “Contribution à l'élaboration de Nano-composites à Base de Polymère Conducteur.” 2016. Web. 26 Feb 2021.
Vancouver:
Ghebache Z. Contribution à l'élaboration de Nano-composites à Base de Polymère Conducteur. [Internet] [Thesis]. Université M'Hamed Bougara Boumerdès; 2016. [cited 2021 Feb 26].
Available from: http://dlibrary.univ-boumerdes.dz:8080/handle/123456789/2895.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Ghebache Z. Contribution à l'élaboration de Nano-composites à Base de Polymère Conducteur. [Thesis]. Université M'Hamed Bougara Boumerdès; 2016. Available from: http://dlibrary.univ-boumerdes.dz:8080/handle/123456789/2895
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Mississippi State University
18.
Yu, Jaesang.
MICROMECHANICALLY BASED MULTISCALE MATERIAL MODELING OF POLYMER NANOCOMPOSITES.
Degree: PhD, Aerospace Engineering, 2011, Mississippi State University
URL: http://sun.library.msstate.edu/ETD-db/theses/available/etd-04012011-131653/
;
► The Effective Continuum Micromechanics Analysis Code (EC-MAC) was developed for predicting effective properties of composites containing multiple distinct nanoheterogeneities (fibers, spheres, platelets, voids, etc.)…
(more)
▼ The Effective Continuum Micromechanics Analysis Code (EC-MAC) was developed for predicting effective properties of composites containing multiple distinct nanoheterogeneities (fibers, spheres, platelets, voids, etc.) each with an arbitrary number of coating layers based upon either the modified Mori-Tanaka method (MTM) and self consistent method (SCM). This code was used to investigate the effect of carbon nanofiber morphology (i.e., hollow versus solid cross-section), nanofiber waviness, and both nanofiber-resin interphase properties and dimensions on bulk nanocomposite elastic moduli. For a given nanofiber axial force-displacement relationship, the elastic modulus for hollow nanofibers can significantly exceed that for solid nanofibers resulting in notable differences in bulk nanocomposite properties. The development of a nanofiber-resin interphase had a notable effect on the bulk elastic moduli. Consistent with results from the literature, small degrees of nanofiber waviness resulted in a significant decrease in effective composite properties.
Key aspects of nanofiber morphology were characterized using transmission electron microscopy (TEM) images for VGCNF/vinyl ester (VE)
nanocomposites. Three-parameter Weibull probability density functions were generated to describe the statistical variation in nanofiber outer diameters, wall thicknesses, relative wall thicknesses, visible aspect ratios, and visible waviness ratios. Such information could be used to establish more realistic nanofiber moduli and strengths obtained from nanofiber tensile tests, as well as to develop physically motivated computational models for predicting nanocomposite behavior. This study represents one of the first attempts to characterize the distribution of VGCNF features in real thermoset
nanocomposites.
In addition, the influence of realistic nanoreinforcement geometries, distinct elastic properties, and orientations on the effective elastic moduli was addressed. The effect of multiple distinct heterogeneities, including voids, on the effective elastic moduli was investigated. For the composites containing randomly oriented wavy vapor grown carbon nanofibers (VGCNFs) and voids, the predicted moduli captured the essential character of the experimental data, where the volume fraction of voids was approximated as a nonlinear function of the volume fraction of reinforcements. This study should facilitate the development of multiscale materials design by providing insight into the relationships between nanomaterial morphology and properties across multiple spatial scales that lead to improved macroscale performance.
Advisors/Committee Members: Thomas E. Lacy (chair), Charles U. Pittman (committee member), Hossein Toghiani (committee member), Judith A. Schneider (committee member), Rani W. Sullivan (committee member).
Subjects/Keywords: polymer nanocomposites; multiscale modeling; micromechanics
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Yu, J. (2011). MICROMECHANICALLY BASED MULTISCALE MATERIAL MODELING OF POLYMER NANOCOMPOSITES. (Doctoral Dissertation). Mississippi State University. Retrieved from http://sun.library.msstate.edu/ETD-db/theses/available/etd-04012011-131653/ ;
Chicago Manual of Style (16th Edition):
Yu, Jaesang. “MICROMECHANICALLY BASED MULTISCALE MATERIAL MODELING OF POLYMER NANOCOMPOSITES.” 2011. Doctoral Dissertation, Mississippi State University. Accessed February 26, 2021.
http://sun.library.msstate.edu/ETD-db/theses/available/etd-04012011-131653/ ;.
MLA Handbook (7th Edition):
Yu, Jaesang. “MICROMECHANICALLY BASED MULTISCALE MATERIAL MODELING OF POLYMER NANOCOMPOSITES.” 2011. Web. 26 Feb 2021.
Vancouver:
Yu J. MICROMECHANICALLY BASED MULTISCALE MATERIAL MODELING OF POLYMER NANOCOMPOSITES. [Internet] [Doctoral dissertation]. Mississippi State University; 2011. [cited 2021 Feb 26].
Available from: http://sun.library.msstate.edu/ETD-db/theses/available/etd-04012011-131653/ ;.
Council of Science Editors:
Yu J. MICROMECHANICALLY BASED MULTISCALE MATERIAL MODELING OF POLYMER NANOCOMPOSITES. [Doctoral Dissertation]. Mississippi State University; 2011. Available from: http://sun.library.msstate.edu/ETD-db/theses/available/etd-04012011-131653/ ;
19.
Coelho, Caio Parra Dantas.
Obtenção e caracterização de nanocompósitos de poliestireno e argilas esmectíticas.
Degree: Mestrado, Engenharia Metalúrgica e de Materiais, 2008, University of São Paulo
URL: http://www.teses.usp.br/teses/disponiveis/3/3133/tde-05082009-165838/
;
► Neste trabalho foram preparados nanocompósitos de Poliestireno (PS) e argilas organofílicas. As argilas, inicialmente hidrofílicas, foram modificadas organicamente utilizando três sais quaternários de amônio diferentes:…
(more)
▼ Neste trabalho foram preparados nanocompósitos de Poliestireno (PS) e argilas organofílicas. As argilas, inicialmente hidrofílicas, foram modificadas organicamente utilizando três sais quaternários de amônio diferentes: Cloreto de hexadecil trimetil amônio (CTAC), Cloreto de alquil dimetil benzil amônio (Dodigen) e Cloreto de dimetil dioctadecil amônio (Praepagen). A argila organofílica Cloisite 20A foi também utilizada neste estudo. Os nanocompósitos foram preparados por intercalação no polímero fundido por três técnicas diferentes: adição de argila em suspensão de álcool etílico por uma bomba dosadora de líquidos durante a extrusão, adição de argila em pó por um alimentador mecânico durante a extrusão e adição de suspensão de argila em álcool etílico durante obtenção por batelada. Os materiais obtidos foram caracterizados por difração de raios-X (DRX), microscopia óptica (MO) e microscopia eletrônica de transmissão (MET) e ensaios reológicos de Cisalhamento Oscilatório de Pequenas Amplitudes (COPA). As propriedades térmicas foram analisadas por análise termogravimétrica (TG) e as propriedades mecânicas foram analisadas por ensaios de tração e impacto Izod. As três técnicas se mostraram eficazes na preparação dos nanocompósitos, e seus resultados apresentaram uma similaridade muito grande. Os resultados de DRX e microscopia mostraram que a maioria dos nanocompósitos apresentou estruturas compostas de fases intercaladas e esfoliadas. As análises térmicas mostraram que a adição de argila ao PS o tornou mais estável termicamente, suportando maiores temperaturas antes de iniciar o processo de degradação. Os ensaios reológicos de COPA e ensaios mecânicos dos nanocompósitos obtidos não apresentaram grandes variações em relação ao PS puro.
In this work nanocomposites of polystyrene (PS) and organophilic clays were prepared. The clays were organically modified using three different ammonium quaternary salts: cetyltrimethyl ammonium chloride (commercial name: CTAC), alquildimethyl benzyl ammonium chloride (commercial name: Dodigen) and distearyl dimethyl ammonium chloride (commercial name: Praepagen). The organoclay Cloisite 20 A was also used in this work. The nanocomposites were prepared by melt intercalation using three different techniques: adding the organoclay as a diluted organic solvent supension to the extruder using a motor-driven metering pump, adding the organoclay as powder to the extruder using a mechanical feeder and adding the organoclay as a diluted organic solvent suspension to the mixer. The materials obtained were characterized by X-ray diffraction (XRD), optical microscopy (OM), transmission electron microscopy (TEM) and by rheological studies through small amplitude oscillatory shear tests (SAOS). The thermal properties were studied by thermogravimetrical analyses (TG) and the mechanical properties were studied by tensile and impact Izod strength tests. The three techniques were efficient to prepare nanocomposites, and their results were very similar. The DRX and microscopy results showed that the…
Advisors/Committee Members: Demarquette, Nicole Raymonde.
Subjects/Keywords: Argilas; Clay; Nanocomposites; Nanocompositos
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APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Coelho, C. P. D. (2008). Obtenção e caracterização de nanocompósitos de poliestireno e argilas esmectíticas. (Masters Thesis). University of São Paulo. Retrieved from http://www.teses.usp.br/teses/disponiveis/3/3133/tde-05082009-165838/ ;
Chicago Manual of Style (16th Edition):
Coelho, Caio Parra Dantas. “Obtenção e caracterização de nanocompósitos de poliestireno e argilas esmectíticas.” 2008. Masters Thesis, University of São Paulo. Accessed February 26, 2021.
http://www.teses.usp.br/teses/disponiveis/3/3133/tde-05082009-165838/ ;.
MLA Handbook (7th Edition):
Coelho, Caio Parra Dantas. “Obtenção e caracterização de nanocompósitos de poliestireno e argilas esmectíticas.” 2008. Web. 26 Feb 2021.
Vancouver:
Coelho CPD. Obtenção e caracterização de nanocompósitos de poliestireno e argilas esmectíticas. [Internet] [Masters thesis]. University of São Paulo; 2008. [cited 2021 Feb 26].
Available from: http://www.teses.usp.br/teses/disponiveis/3/3133/tde-05082009-165838/ ;.
Council of Science Editors:
Coelho CPD. Obtenção e caracterização de nanocompósitos de poliestireno e argilas esmectíticas. [Masters Thesis]. University of São Paulo; 2008. Available from: http://www.teses.usp.br/teses/disponiveis/3/3133/tde-05082009-165838/ ;
20.
Yang, Fengyuan.
SUPERCRITICAL CARBON DIOXIDE (scCO2) PROCESSING OF DISPERSED POLYMER/CLAY NANOCOMPOSITES: STRUCTURAL AND BARRIER PROPERTIES.
Degree: 2014, Johns Hopkins University
URL: http://jhir.library.jhu.edu/handle/1774.2/37884
► Improved polymeric packaging materials have significantly economic and environmental impact on food, beverage and other industries. In this dissertation, we developed polymer/clay nanocomposites, by incorporating…
(more)
▼ Improved polymeric packaging materials have significantly economic and environmental impact on food, beverage and other industries. In this dissertation, we developed polymer/clay
nanocomposites, by incorporating impermeable layered silicates into polymeric matrix to enhance barrier properties. We utilized the unique properties of super critical carbon dioxide (scCO2) to exfoliate clay layers and improve polymer-clay interactions, which are two key challenges in the field of
nanocomposites. Firstly, the scCO2 processing was applied to pre-disperse various commercial Cloisite® clays, the effects of scCO2 processing and chemical and physical properties of clay particles on clay pre-dispersion were investigated and the extent of clay pre-dispersion was assessed by SEM, WAXD and TGA. We found that the scCO2 processing results in pre-dispersion of organic modified clays regardless what kind of modifier on them. The degree of dispersion of different kind of clays actually is
a competitive result between carbon dioxide philicity and modifiers interaction. In addition, TGA data confirm that the scCO2 processing does not remove surface modifiers from clays, which maintain good solubility of clay in organic solvent and compatibility with organic phase. Secondly, the pre-dispersed clay particles were solution blending with polystyrene (PS) to form
nanocomposites, whose structural physical properties were characterized and evaluated by WAXD and TEM. The effects of scCO2 processing, clay dispersion, modification and fraction on improvements of physical properties such as rheology and barrier of
nanocomposites were investigated. In addition, structure-barrier properties relationship was assessed based on several phenomenological models. In particular, we identified that 10A is the best reinforcement for improving PS barrier properties. Microstructural and barrier properties characterizations revealed that scCO2 processed clays prevent reorganization of platelets
and lead to more homogenously clay dispersion with improved interfaces. As the increase of clay fraction and dispersion, gas permeation decreased continuously, in this study ~83% reduction of permeation had been achieved with 3.1 vol% of scCO2 processed clays with a calculated effective aspect ratio of 109. Finally, the concept of scCO2 processing reinforced polymer/clay
nanocomposites based on PS matrix was translated to more complex melting extrusion of engineering polymers, such as polyethylene terephthalate (PET) and high density polyethylene (HDPE). The effects of scCO2 processing, clay dispersion, modification and fraction and temperature on improvements of structural and physical properties of matrix were investigated and discussed. 30B and 20A were identified as the best candidate for improving barrier properties of PET and HDPE respectively. Similarly, we found that scCO2 processed clays lead to more homogenously clay dispersion with improved interfaces. Nevertheless, unlike
previous research, permeation of PET did not decrease continuously with increase of clay…
Advisors/Committee Members: Rangaramanujam, Kannan (advisor).
Subjects/Keywords: Nanocomposites; Super critical carbon dioxide
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APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Yang, F. (2014). SUPERCRITICAL CARBON DIOXIDE (scCO2) PROCESSING OF DISPERSED POLYMER/CLAY NANOCOMPOSITES: STRUCTURAL AND BARRIER PROPERTIES. (Thesis). Johns Hopkins University. Retrieved from http://jhir.library.jhu.edu/handle/1774.2/37884
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Yang, Fengyuan. “SUPERCRITICAL CARBON DIOXIDE (scCO2) PROCESSING OF DISPERSED POLYMER/CLAY NANOCOMPOSITES: STRUCTURAL AND BARRIER PROPERTIES.” 2014. Thesis, Johns Hopkins University. Accessed February 26, 2021.
http://jhir.library.jhu.edu/handle/1774.2/37884.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Yang, Fengyuan. “SUPERCRITICAL CARBON DIOXIDE (scCO2) PROCESSING OF DISPERSED POLYMER/CLAY NANOCOMPOSITES: STRUCTURAL AND BARRIER PROPERTIES.” 2014. Web. 26 Feb 2021.
Vancouver:
Yang F. SUPERCRITICAL CARBON DIOXIDE (scCO2) PROCESSING OF DISPERSED POLYMER/CLAY NANOCOMPOSITES: STRUCTURAL AND BARRIER PROPERTIES. [Internet] [Thesis]. Johns Hopkins University; 2014. [cited 2021 Feb 26].
Available from: http://jhir.library.jhu.edu/handle/1774.2/37884.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Yang F. SUPERCRITICAL CARBON DIOXIDE (scCO2) PROCESSING OF DISPERSED POLYMER/CLAY NANOCOMPOSITES: STRUCTURAL AND BARRIER PROPERTIES. [Thesis]. Johns Hopkins University; 2014. Available from: http://jhir.library.jhu.edu/handle/1774.2/37884
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Manchester
21.
Naji, Haneen.
Fabricating of Multiscale Composite Materials Based on
TPU reinforced by carbon fibre and Graphene Nanoplatelets
(GNPs).
Degree: 2019, University of Manchester
URL: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:322469
► This project focuses on manufacturing novel carbon fibre (CF) multiscale composites (MSCs) based on nanocomposite matrices of thermoplastic polyurethane (TPU) and graphene nanoplatelets (GNPs). The…
(more)
▼ This project focuses on manufacturing novel carbon
fibre (CF) multiscale composites (MSCs) based on nanocomposite
matrices of thermoplastic polyurethane (TPU) and graphene
nanoplatelets (GNPs). The main aim of this study is to obtain
innovative MSCs with optimised electrical, thermal and mechanical
properties that make them applicable to aerospace, transportation
and electrical devices. The TPU with 70 wt. % hard segments (HS)
was filled with three different sizes of GNPs, with average
particle diameters of 5 microns (GNPM5), 15 microns (GNPM15) and 25
Âmicrons (GNPM25), and reinforced with CF fabric to produce MSCs.
The effect of GNP size and annealing treatment on the thermal
dynamic, mechanical and electrical properties of TPU-70 HS and
TPU70/CF laminate were investigated. Following these tests, the
best MSCs that could be obtained were used to study the effect of
GNP content on the Mode-I interlaminar fracture toughness (ILFT),
impact-damage resistance and damage tolerance of TPU70/CF
laminates. It was found that the tensile modulus (E) and flexural
modulus (FM) of polymers-NCs matrices were affected by both the
size of GNPs and annealing treatments. While the addition of GNPM25
yielded an impressive improvement in the E and FM of TPU-70 HS, the
annealing treatment caused a slight reduction owing to the
disruption of phase separation and restacking of the GNP flakes.
However, the neat TPU-70 HS exhibited significant improvements in
the E and FM after annealing due to the formation of
microcrystalline hard domain (HD) phase separation, which caused an
increase in stiffness. The in-plane and out-of-plane electrical
conductivity and the thermal conductivity of NCs combined with
GNPM15 and GNPM25 showed a significant improvement compared to that
of neat TPU-70 HS. The same results of E and FM were reported for
MSCs based on GNPM25, where the E and FM enhanced by 19% and 105%
compared with that of TPU70/CF laminates and reduced by 11% and 4%
respectively after annealing. The out-of-plane electrical
conductivity of TPU70/CF composites showed a noticeable improvement
upon incorporating GNPM15 and GNPM25. Conversely, the thermal
conductivity of the TPU70/CF laminate exhibited a significant
improvement upon the addition of GNPM5 compared to that of GNPM15
and GNPM25. This result might be attributed to the non-uniform
dispersion of GNPM5 due to its small size, leading to an increase
in local thermal diffusivity. Since the best tensile, flexural and
electrical properties were ascribed to the NCs and MSCs combined
with GNPM25, these materials were selected and different weight
percentages of GNPs (0.5, 2.5 and 5) were used. The MSCs combined
with 0.5 wt.% GNPs showed a slight improvement in the GIC-Max and
GIC-Prop compared with that of the TPU-70 CF, while a high loading
caused a significant reduction in both GIC initiation and
propagation. In addition, both the impact-damage resistance and
residual compressive strength of MSCs at high GNP loading and
impact energy levels experienced a significant reduction compared
to…
Advisors/Committee Members: GRESIL, MATTHIEU M, Saiani, Alberto, Gresil, Matthieu.
Subjects/Keywords: graphene nanoplatelets nanocomposites; Multiscale composites
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Naji, H. (2019). Fabricating of Multiscale Composite Materials Based on
TPU reinforced by carbon fibre and Graphene Nanoplatelets
(GNPs). (Doctoral Dissertation). University of Manchester. Retrieved from http://www.manchester.ac.uk/escholar/uk-ac-man-scw:322469
Chicago Manual of Style (16th Edition):
Naji, Haneen. “Fabricating of Multiscale Composite Materials Based on
TPU reinforced by carbon fibre and Graphene Nanoplatelets
(GNPs).” 2019. Doctoral Dissertation, University of Manchester. Accessed February 26, 2021.
http://www.manchester.ac.uk/escholar/uk-ac-man-scw:322469.
MLA Handbook (7th Edition):
Naji, Haneen. “Fabricating of Multiscale Composite Materials Based on
TPU reinforced by carbon fibre and Graphene Nanoplatelets
(GNPs).” 2019. Web. 26 Feb 2021.
Vancouver:
Naji H. Fabricating of Multiscale Composite Materials Based on
TPU reinforced by carbon fibre and Graphene Nanoplatelets
(GNPs). [Internet] [Doctoral dissertation]. University of Manchester; 2019. [cited 2021 Feb 26].
Available from: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:322469.
Council of Science Editors:
Naji H. Fabricating of Multiscale Composite Materials Based on
TPU reinforced by carbon fibre and Graphene Nanoplatelets
(GNPs). [Doctoral Dissertation]. University of Manchester; 2019. Available from: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:322469

Cornell University
22.
Kim, Daniel.
Polymer Nanocomposites: Polymer And Particle Dynamics And Its Application As Lubricant.
Degree: M.S., Chemical Engineering, Chemical Engineering, 2012, Cornell University
URL: http://hdl.handle.net/1813/31010
► My thesis is prepared upon two separate yet interdisciplinary projects. First, I present a project entitled 'Polymer Nanocomposites: Polymer and Particle Dynamics' where I investigate…
(more)
▼ My thesis is prepared upon two separate yet interdisciplinary projects. First, I present a project entitled 'Polymer
Nanocomposites: Polymer and Particle Dynamics' where I investigate dynamics of polymer and particle upon their mixing. On second part of the thesis, I present one of the application of polymer
nanocomposites (PNC) entitled 'Nanoscale Organic-Inorganic Hybrid Lubricants'. Understanding nanoscale dynamics of polymer and particle upon mixing will be a useful guide to improve its application. Polymer
Nanocomposites: Polymer and Particle Dynamics - Polymer
nanocomposites containing nanoparticles smaller than the random coil size of their host polymer chains are known to exhibit unique properties, such as lower viscosity and glass transition temperature relative to the neat polymer melt. It has been hypothesized that these unusual properties result from fast diffusion of the nanostructures in the host polymer, which facilitates polymer chain relaxation by constraint release and other processes. In this study, the effects of addition of sterically stabilized inorganic nanoparticles to entangled cis-1,4-polyisoprene and polydimethylsiloxane on the overall rheology of
nanocomposites are discussed. In addition, insights about the relaxation of the host polymer chains and transport properties of nanoparticles in entangled polymer
nanocomposites are presented. The nanoparticles are found to act as effective plasticizers for their entangled linear hosts, and below a critical, chemistry and molecular-weight dependent particle volume fraction, lead to reduced viscosity, glass transition temperature, number of entanglements, and polymer relaxation time. We also find that the particle motions in the polymer host are hyperdiffusive and at the nanoparticle length scale, the polymer host acts like a simple, ideal fluid and the composites' viscosity rises with increasing particle concentration. Nanoscale Organic-Inorganic Hybrid Lubricants - Silica (SiO2) nanoparticles densely grafted with amphiphilic organic chains are used to create a family of organicinorganic hybrid lubricants. Short sulfonate-functionalized alkylaryl chains covalently tethered to the particles form a dense corona brush that stabilizes them against aggregation. When these hybrid particles are dispersed in poly-[alpha]-olefin (PAO) oligomers, they form homogeneous nanocomposite fluids at both low and high particle loadings. By varying the volume fraction of the SiO2 nanostructures in the PAO
nanocomposites, we show that exceptionally stable hybrid lubricants can be created and that their mechanical properties can be tuned to span the spectrum from simple liquids to complex gels. We further show that these hybrid lubricants simultaneously exhibit lower interfacial friction coefficients, enhanced wear and mechanical properties, and superior thermal stability in comparison with either PAO or its
nanocomposites created at low nanoparticle loadings. Profilometry and energy dispersive X-ray spectroscopic analysis of the wear track show that the enhanced wear…
Advisors/Committee Members: Archer, Lynden A. (chair), Joo, Yong L. (committee member).
Subjects/Keywords: polymer; polymer nanocomposites; nanoparticle
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Kim, D. (2012). Polymer Nanocomposites: Polymer And Particle Dynamics And Its Application As Lubricant. (Masters Thesis). Cornell University. Retrieved from http://hdl.handle.net/1813/31010
Chicago Manual of Style (16th Edition):
Kim, Daniel. “Polymer Nanocomposites: Polymer And Particle Dynamics And Its Application As Lubricant.” 2012. Masters Thesis, Cornell University. Accessed February 26, 2021.
http://hdl.handle.net/1813/31010.
MLA Handbook (7th Edition):
Kim, Daniel. “Polymer Nanocomposites: Polymer And Particle Dynamics And Its Application As Lubricant.” 2012. Web. 26 Feb 2021.
Vancouver:
Kim D. Polymer Nanocomposites: Polymer And Particle Dynamics And Its Application As Lubricant. [Internet] [Masters thesis]. Cornell University; 2012. [cited 2021 Feb 26].
Available from: http://hdl.handle.net/1813/31010.
Council of Science Editors:
Kim D. Polymer Nanocomposites: Polymer And Particle Dynamics And Its Application As Lubricant. [Masters Thesis]. Cornell University; 2012. Available from: http://hdl.handle.net/1813/31010

Cornell University
23.
Tasneem, Jennifer Eva.
A PHYSICAL CONFINEMENT-BASED FORMATION OF SEMICONDUCTOR OXIDE/PLASMONIC NANOPARTICLE HETEROSTRUCTURES.
Degree: M.S., Materials Science and Engineering, Materials Science and Engineering, 2020, Cornell University
URL: http://hdl.handle.net/1813/70233
► In nature, biological organisms have substantial control over processes that lead to the formation of biominerals. For example, magnetotactic bacteria utilize the confined volumes of…
(more)
▼ In nature, biological organisms have substantial control over processes that lead to the formation of biominerals. For example, magnetotactic bacteria utilize the confined volumes of magnetosomes to crystallize magnetic iron oxide particles that are enclosed in lipid bilayer membranes. The organisms are able to form carefully controlled chains of these particles that they use as a compass to navigate the Earth’s geomagnetic field. By taking inspiration from such naturally occurring processes, we aim to synthesize functional composites under confinement that possess excellent optoelectronic and photocatalytic properties. Semiconductor oxide and plasmonic metal nanoparticle heterostructures are excellent candidates for studying metal-to-semiconductor energy transfer for optoelectronic applications. Entrapment of plasmonic nanoparticles such as gold and silver within semiconducting materials such as copper oxide and zinc oxide, greatly increases their optical absorption and charge transfer. Two typical morphologies of such heterostructures, such as core-shell nanoparticles and preformed semiconductor oxide structures that are decorated with plasmonic nanoparticles, have been well studied, however, these structures both have limitations on the degree of optical enhancement due to the morphology of the structures. In this study, we used a physical confinement-based technique using track-etched polycarbonate membranes to synthesize heterostructures based on a bio-inspired crystal growth approach to incorporate arrays of plasmonic nanoparticles without the use of insulating surface ligands. By carefully controlling the synthesis protocol, we are able to tune the spatial distribution of nanoparticles that are entrapped within the semiconductor matrices which can give rise to diverse splitting and broadening of the plasmon peak in the heterostructures. It is important to expand the viable morphologies of heterostructures used in photovoltaic applications because electronic properties depend on the morphology and nanostructure of the composites. Our results demonstrate the flexibility of the physical confinement-based approach to synthesize crystalline architectures which entrap multiple plasmonic nanoparticles within a semiconducting matrix to access a relatively unexplored morphology that can enable promising optoelectronic properties.
Advisors/Committee Members: Estroff, Lara (chair), Suntivich, Jin (committee member).
Subjects/Keywords: Nanocomposites; Plasmonic nanoparticles; semiconductor oxides
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Tasneem, J. E. (2020). A PHYSICAL CONFINEMENT-BASED FORMATION OF SEMICONDUCTOR OXIDE/PLASMONIC NANOPARTICLE HETEROSTRUCTURES. (Masters Thesis). Cornell University. Retrieved from http://hdl.handle.net/1813/70233
Chicago Manual of Style (16th Edition):
Tasneem, Jennifer Eva. “A PHYSICAL CONFINEMENT-BASED FORMATION OF SEMICONDUCTOR OXIDE/PLASMONIC NANOPARTICLE HETEROSTRUCTURES.” 2020. Masters Thesis, Cornell University. Accessed February 26, 2021.
http://hdl.handle.net/1813/70233.
MLA Handbook (7th Edition):
Tasneem, Jennifer Eva. “A PHYSICAL CONFINEMENT-BASED FORMATION OF SEMICONDUCTOR OXIDE/PLASMONIC NANOPARTICLE HETEROSTRUCTURES.” 2020. Web. 26 Feb 2021.
Vancouver:
Tasneem JE. A PHYSICAL CONFINEMENT-BASED FORMATION OF SEMICONDUCTOR OXIDE/PLASMONIC NANOPARTICLE HETEROSTRUCTURES. [Internet] [Masters thesis]. Cornell University; 2020. [cited 2021 Feb 26].
Available from: http://hdl.handle.net/1813/70233.
Council of Science Editors:
Tasneem JE. A PHYSICAL CONFINEMENT-BASED FORMATION OF SEMICONDUCTOR OXIDE/PLASMONIC NANOPARTICLE HETEROSTRUCTURES. [Masters Thesis]. Cornell University; 2020. Available from: http://hdl.handle.net/1813/70233

Universidade Estadual de Campinas
24.
Nogueira, Telma Regina.
Síntese de nanocompósitos a partir de metacrilato de metila e hidróxidos duplos lamelares: Synthesis of nancomposites with poly(methyl methacrylate) reinforced by layered double hydroxides.
Degree: 2012, Universidade Estadual de Campinas
URL: http://repositorio.unicamp.br/jspui/handle/REPOSIP/266777
► Abstract: Recently, nanocomposites consisting of polymer and mineral clays have attracted considerable scientific interest. Most published works on the production of polymer nanocomposites use clay…
(more)
▼ Abstract: Recently,
nanocomposites consisting of polymer and mineral clays have attracted considerable scientific interest. Most published works on the production of polymer
nanocomposites use clay mineral fillers such as montmorillonite, modified with cationic surfactants. Another class of anionic exchanger is layered double hydroxides (LDH), which rarely occur in nature but are very simple and inexpensive to synthesize, allowing the production of highly defined composition material. In this study we have investigated "in situ" bulk polymerization of methyl methacrylate (MMA) in the presence of LDHs intercalated by organic anions (dodecyl sulfate, laurate, stearate). There are few studies in the open literature on the mechanical and thermal properties of PMMA
nanocomposites reinforced with hydrophobic HDLs and so far it was not found in open literature studies about the mechanical and thermal properties of the PMMA
nanocomposites reinforced with stearate intercalated LDHs. In our laboratory, the investigation in the
nanocomposites area started recently, however, some results on the
nanocomposites of polystyrene and layered double hydroxides have already been produced. In the present work were synthesized
nanocomposites with high transparence in the visible region as well as
nanocomposites with an uniform orange color, without the addition of dyes or pigments. By thermogravimetric analysis, the results showed that the addition of LDHs may increase PMMA decomposition temperature in more than 80°C. The results of dynamic mechanical analysis, for
nanocomposites with 1wt% of LDHs, showed that elastic modulus more than 2 times higher than PMMA in the range of studied temperature. In order to verify how the LDH concentration could affect the previously evaluated properties,
nanocomposites containing six different pre-selected LDHs, in two different concentrations (3% and 5%) were synthesized. These results demonstrated that most of these
nanocomposites presented microhardness values higher than those found for PMMA
Advisors/Committee Members: UNIVERSIDADE ESTADUAL DE CAMPINAS (CRUESP), Lona, Liliane Maria Ferrareso, 1966- (advisor), Wypych, Fernando (coadvisor), Universidade Estadual de Campinas. Faculdade de Engenharia Química (institution), Programa de Pós-Graduação em Engenharia Química (nameofprogram), Sayer, Claudia (committee member), Giordani, Domingos Savio (committee member), Marangoni, Rafael (committee member), Santos, Paula Sbaite Duarte dos (committee member).
Subjects/Keywords: Nanocompósitos (Materiais); PMMA1; Nanocomposites; PMMA
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Nogueira, T. R. (2012). Síntese de nanocompósitos a partir de metacrilato de metila e hidróxidos duplos lamelares: Synthesis of nancomposites with poly(methyl methacrylate) reinforced by layered double hydroxides. (Thesis). Universidade Estadual de Campinas. Retrieved from http://repositorio.unicamp.br/jspui/handle/REPOSIP/266777
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Nogueira, Telma Regina. “Síntese de nanocompósitos a partir de metacrilato de metila e hidróxidos duplos lamelares: Synthesis of nancomposites with poly(methyl methacrylate) reinforced by layered double hydroxides.” 2012. Thesis, Universidade Estadual de Campinas. Accessed February 26, 2021.
http://repositorio.unicamp.br/jspui/handle/REPOSIP/266777.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Nogueira, Telma Regina. “Síntese de nanocompósitos a partir de metacrilato de metila e hidróxidos duplos lamelares: Synthesis of nancomposites with poly(methyl methacrylate) reinforced by layered double hydroxides.” 2012. Web. 26 Feb 2021.
Vancouver:
Nogueira TR. Síntese de nanocompósitos a partir de metacrilato de metila e hidróxidos duplos lamelares: Synthesis of nancomposites with poly(methyl methacrylate) reinforced by layered double hydroxides. [Internet] [Thesis]. Universidade Estadual de Campinas; 2012. [cited 2021 Feb 26].
Available from: http://repositorio.unicamp.br/jspui/handle/REPOSIP/266777.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Nogueira TR. Síntese de nanocompósitos a partir de metacrilato de metila e hidróxidos duplos lamelares: Synthesis of nancomposites with poly(methyl methacrylate) reinforced by layered double hydroxides. [Thesis]. Universidade Estadual de Campinas; 2012. Available from: http://repositorio.unicamp.br/jspui/handle/REPOSIP/266777
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Anna University
25.
Nixon Samuel Vijayakumar G.
Synthesis of ZnO CuO BaO MnO ZnO BaO AND ZnO CaO
composite nanofibers by electrospinning and their
characterization;.
Degree: 2014, Anna University
URL: http://shodhganga.inflibnet.ac.in/handle/10603/14693
► Electrospinning process is a versatile process which uses an electrostatic force to process many kinds of materials like polymers, composite, ceramic materials, etc. Electrospinning of…
(more)
▼ Electrospinning process is a versatile process
which uses an electrostatic force to process many kinds of
materials like polymers, composite, ceramic materials, etc.
Electrospinning of the composite sol derived from the sol-gel
process yields one dimensional nanocomposite fibers. Poly (Vinyl
Alcohol) / zinc acetate / copper acetate nanofibers were
synthesized by electrospinning the sol obtained in the sol-gel
process. The effect of applied voltage on the morphology of the
fibers was studied. Nonlinear optical properties were studied by
Kurtz-Perry powder technique and Second Harmonic Generation (SHG)
efficiency was measured to be 11.1 times than that of KDP PVA /
barium acetate / manganese acetate sol was electrospun to obtain
composite nanofibers. These nanofibers were calcined at 1023 K for
5h and BaO / MnO composite nanofibers were obtained. Morphology of
these nanofibers were studied by varying the size of the needle
opening. Composite fibers of PVA / zinc acetate / barium acetate
were obtained by electrospinning the sol obtained in the sol-gel
process. The effect on morphology of these fibers was studied with
respect to working distance. From the dielectric studies, it was
found that the material exhibits ferroelectric to paraelectric
phase transition at 323 K. From the SHG test, Second Harmonic
Generation efficiency of this material was found to be 0.55 times
than that of KDP. Second harmonic generation efficiency of
ZnO/Ca0.5O and Zn0.5O/CaO nanocomposites were found to be 1.63 and
2.94 times than that of KDP. The A.C.conductivity of ZnO/Ca0.5O,
Zn0.5O/CaO and ZnO/CaO nanocomposite materials were investigated.
Among all the three composite materials, Zn0.5O/CaO has the highest
conductivity, ZnO/CaO has moderate conductivity and ZnO/Ca0.5O has
the least conductivity at 308 K. All these nanofibers exhibited
interesting properties and could be used as potential candidates in
various engineering applications. newline newline
newline
Advisors/Committee Members: Suresh Kumar P.
Subjects/Keywords: Synthesis; nanofibers; electrospinning; paraelectric;
nanocomposites
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
G, N. S. V. (2014). Synthesis of ZnO CuO BaO MnO ZnO BaO AND ZnO CaO
composite nanofibers by electrospinning and their
characterization;. (Thesis). Anna University. Retrieved from http://shodhganga.inflibnet.ac.in/handle/10603/14693
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
G, Nixon Samuel Vijayakumar. “Synthesis of ZnO CuO BaO MnO ZnO BaO AND ZnO CaO
composite nanofibers by electrospinning and their
characterization;.” 2014. Thesis, Anna University. Accessed February 26, 2021.
http://shodhganga.inflibnet.ac.in/handle/10603/14693.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
G, Nixon Samuel Vijayakumar. “Synthesis of ZnO CuO BaO MnO ZnO BaO AND ZnO CaO
composite nanofibers by electrospinning and their
characterization;.” 2014. Web. 26 Feb 2021.
Vancouver:
G NSV. Synthesis of ZnO CuO BaO MnO ZnO BaO AND ZnO CaO
composite nanofibers by electrospinning and their
characterization;. [Internet] [Thesis]. Anna University; 2014. [cited 2021 Feb 26].
Available from: http://shodhganga.inflibnet.ac.in/handle/10603/14693.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
G NSV. Synthesis of ZnO CuO BaO MnO ZnO BaO AND ZnO CaO
composite nanofibers by electrospinning and their
characterization;. [Thesis]. Anna University; 2014. Available from: http://shodhganga.inflibnet.ac.in/handle/10603/14693
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Anna University
26.
Revathi Purushothaman.
Development and characterization of mesoporous
terpolyimide nanocomposites with low dielectric constant.
Degree: Chemistry, 2013, Anna University
URL: http://shodhganga.inflibnet.ac.in/handle/10603/9988
► Polyimides are a sophisticated family of materials, which cover an exhaustive range of high performance polymers. They find applications in highly technical end use fields…
(more)
▼ Polyimides are a sophisticated family of materials,
which cover an exhaustive range of high performance polymers. They
find applications in highly technical end use fields from aerospace
to microelectronics. Their strength and resistance to heat and
chemicals are so great that these materials often replace glass and
metals such as steel, in many demanding industrial applications.
The scope of the present investigation was to synthesize
terpolyimides with low dielectric constant without comprising
thermal and mechanical properties. In this context, in the present
study two different systems of terpolyimides were synthesized. The
first system of terpolyimides was synthesized by combining
dianhydrides such as 3,3 ,4,4 -biphenyl dianhydride (BPDA), 3,3
,4,4 -benzophenonetetracaboxylic dianhydride (BTDA) and 3,3 ,4,4
-oxydiphthalicdianhydride (ODPA) with a diamine 4,4 -oxydianiline
(ODA). The second system of terpolyimides was synthesized by
combining BPDA, BTDA and 4,4 -(hexafluoroisopropylidene)
diphthalicanhydride (6FDA) with ODA. Their hompolyimides and
copolyimides were also synthesized for comparison. The first system
of terpolyimides showed enhanced thermal stability, high tensile
strength and tensile modulus compared to the second system of
terpolyimides. The dielectric constants of the former were also
higher than the latter. Though the second system of terpolyimides
showed low dielectric constant, their thermal and mechanical
properties were poor. As a result of functionalization their
surface areas were also reduced. As the pore diameter of APTS-KIT-6
was larger than APTS-SBA-15, it could trap more air in it and
further reduce dielectric constant.
References p. 154-167, List of publcations p.
168
Advisors/Committee Members: Easwaramoorthy D.
Subjects/Keywords: Dielectric constant; Mesoporous terpolyimide nanocomposites
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APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
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APA (6th Edition):
Purushothaman, R. (2013). Development and characterization of mesoporous
terpolyimide nanocomposites with low dielectric constant. (Thesis). Anna University. Retrieved from http://shodhganga.inflibnet.ac.in/handle/10603/9988
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Purushothaman, Revathi. “Development and characterization of mesoporous
terpolyimide nanocomposites with low dielectric constant.” 2013. Thesis, Anna University. Accessed February 26, 2021.
http://shodhganga.inflibnet.ac.in/handle/10603/9988.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Purushothaman, Revathi. “Development and characterization of mesoporous
terpolyimide nanocomposites with low dielectric constant.” 2013. Web. 26 Feb 2021.
Vancouver:
Purushothaman R. Development and characterization of mesoporous
terpolyimide nanocomposites with low dielectric constant. [Internet] [Thesis]. Anna University; 2013. [cited 2021 Feb 26].
Available from: http://shodhganga.inflibnet.ac.in/handle/10603/9988.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Purushothaman R. Development and characterization of mesoporous
terpolyimide nanocomposites with low dielectric constant. [Thesis]. Anna University; 2013. Available from: http://shodhganga.inflibnet.ac.in/handle/10603/9988
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Stellenbosch University
27.
Siebert, Piere-Andre John.
Electrospun carbon nanotube filled composite nanofibers by non-covalent compatibilization.
Degree: MSc, Chemistry and Polymer Science, 2016, Stellenbosch University
URL: http://hdl.handle.net/10019.1/98299
► ENGLISH ABSTRACT: This study covers the successful production of poly(acrylonitrile) (PAN)/multi-walled-carbon-nanotube (MWCNT) fibrous composites by the incorporation of noncovalently functionalized MWCNTs in various loading fractions.…
(more)
▼ ENGLISH ABSTRACT: This study covers the successful production of poly(acrylonitrile) (PAN)/multi-walled-carbon-nanotube (MWCNT) fibrous composites by the incorporation of noncovalently functionalized MWCNTs in various loading fractions. In maintaining the sp2 hybridization as opposed to the conventional covalent functionalization, the conjugated MWCNT structure is maintained and in doing so preserves the mechanical and conductive properties commonly associated with these fillers. This allows for the optimum transference of desired property/properties to the produced composite assuming sufficient filler dispersion. MWCNTs are functionalized by polymeric compatibilizers of mono- and multi pyrene functional character. The pyrene moiety allows for the noncovalent 𝜋-𝜋 stacking interaction to the conjugated surface of MWCNTs by strong van der Waals forces.
Mono pyrene functional poly(acrylonitrile) (Py-PAN) polymers were synthesized via Atom Transfer Radical Polymerization (ATRP) from presynthesized pyrene functional initiators namely 1-pyrenemethyl-2-bromoisobutyrate and 1-pyrenebutyl-2-bromoisobutyrate respectively. The synthesis of PAN polymers of α-chain end pyrene functionality was also attempted by the relatively unexplored redox initiated polymerization by catalytic cerium ammonium nitrate (CAN) from 1-pyrenemethanol and 1-pyrenebutanol initiators respectively. The synthesis proved challenging from the proposed initiators and with relatively low yields even after an extensive method development in an effort to achieve optimum reaction conditions. Multi pyrene functional PAN polymers (PAN-co-PyMMP) was successfully prepared via Conventional Free Radical (CFR) copolymerization of conventional acrylonitrile (AN) monomers and presynthesized (1-pyrene)methyl-2-methyl-2-propenoate (PyMMP) macromonomers in producing a PAN based polymers of protruding pyrene moieties along the polymer chain. The multi pyrene functional copolymer is successfully prepared to three predetermined PyMMP compositions (or mol% functionality) by variation of the monomer feed ratio. The synthesized initiators as well as the monomer and functional polymers were analyzed by 1H-NMR analysis confirming the isolation of the hypothesized products. 1H-NMR was also implemented to determine the average composition of the pyrene moiety incorporated into both of the structurally alternate functional PAN polymers presented as the mol% pyrene functionality.
Mono- and multi-functional variations of the PAN polymer were exposed to increasing amounts of MWCNTs and analyzed by 1H-NMR following reported instances of a quenching phenomenon being seen in the 1H-NMR spectra of signals representing protons taking part in 𝜋-𝜋 stacking interactions (protons protruding from the pyrene moiety). The analysis produced a quenching trend of the polymers as the MWCNT loading is increased. These trends are confirmed by the more common method of tracking these noncovalent 𝜋-𝜋 stacking interactions by the quenching phenomenon apparent from the UV-fluorescence analysis of the…
Advisors/Committee Members: Mallon, Peter E., Stellenbosch University. Faculty of Engineering. Dept. of Chemistry and Polymer Science..
Subjects/Keywords: Nanocomposites (Materials); Nanotube; Electrospinning; UCTD
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Siebert, P. J. (2016). Electrospun carbon nanotube filled composite nanofibers by non-covalent compatibilization. (Masters Thesis). Stellenbosch University. Retrieved from http://hdl.handle.net/10019.1/98299
Chicago Manual of Style (16th Edition):
Siebert, Piere-Andre John. “Electrospun carbon nanotube filled composite nanofibers by non-covalent compatibilization.” 2016. Masters Thesis, Stellenbosch University. Accessed February 26, 2021.
http://hdl.handle.net/10019.1/98299.
MLA Handbook (7th Edition):
Siebert, Piere-Andre John. “Electrospun carbon nanotube filled composite nanofibers by non-covalent compatibilization.” 2016. Web. 26 Feb 2021.
Vancouver:
Siebert PJ. Electrospun carbon nanotube filled composite nanofibers by non-covalent compatibilization. [Internet] [Masters thesis]. Stellenbosch University; 2016. [cited 2021 Feb 26].
Available from: http://hdl.handle.net/10019.1/98299.
Council of Science Editors:
Siebert PJ. Electrospun carbon nanotube filled composite nanofibers by non-covalent compatibilization. [Masters Thesis]. Stellenbosch University; 2016. Available from: http://hdl.handle.net/10019.1/98299

McMaster University
28.
Zhang, Tianshi.
Master's thesis of Tianshi Zhang.
Degree: MASc, 2016, McMaster University
URL: http://hdl.handle.net/11375/20407
► Novel electrocchemical and chemical strategies have been developed for the fabrication of functional nanocomposites. New scientific and engineering contribution of this work to colloidal nanotechnology…
(more)
▼ Novel electrocchemical and chemical strategies have been developed for the fabrication of functional
nanocomposites. New scientific and engineering contribution of this work to colloidal nanotechnology included the development of advanced chelating dispersing agents, such as various small organic molecules and chelating polymers. The unique feature of such dispersion agents is their strong adsorption on the surface of different materials, which allows superior dispersion. The chelating monomers of chelating polymers, such as PAZO and PMSS provided multiple adsorption sites for bonding to metal atoms on the particles surface. We analyzed and developed new fundamental adsorption and dispersion mechanisms. An important finding was the possibility of co-dispersion and co-deposition of advanced materials such as oxides, nitrides, complex oxides and minerals using universal dispersing agents and formation of composites by EPD method.
It was found that Caffeic acid (CA) can be used as an efficient dispersing agent for the synthesis of ZnO nanorods of reduced size and a dispersing agent for the EPD of ZnO films. Another important achievement of this work was the application of tannic acid as an efficient capping and dispersing agent for synthesis and EPD of inorganic materials and composites. An important discovery was the use of lauryl gallate dispersant as a reducing agent for the synthesis of AgNp and a vehicle for particle dispersion and extraction in the liquid-liquid extraction method.
Further advancements in our new technologies allowed us to develop composite films using anodic EPD using weak polyelectrolytes, such as alginate. The composite coatings exhibited protective and flame retardant properties. We analyzed the deposition mechanisms and kinetics as well as microstructure of the coatings. In another strategy, we developed electrochemical strategies for the deposition of composites, based on strong polyelectrolytes. The approach is based on the EPD of the polyelectrolyte molecules and electrosynthesis of EPD of ceramic particles. The electrostatic heterocoagulation mechanism was proposed for the deposit formation. We investigated the deposition kinetics, composition and microstructure of the composites prepared by the new strategies. The new electrochemical strategies can be used for the deposition of other composites, based on functional polymers with pH independent charge.
New methods have been developed for the chemical synthesis of PPy based composites, using PMSS, PMSS–SR11 and PMSS–SR31 as anionic dopants for chemical polymerization and dispersants for MWCNT. The composites showed promising performance for application in electrodes of electrochemical supercapacitors. Good electrochemical performance was achieved at high active mass loadings. The electrodes showed high capacitance, large voltage window and low impedance. The analysis of electrochemical testing results and chemical structure of PMSS, PMSS–SR11 and PMSS–SR31 provided an insight into the influence of the anionic functional groups on the…
Advisors/Committee Members: Zhitomirsky, Igor, Materials Science and Engineering.
Subjects/Keywords: Master's thesis; Nanocomposites; Electrodeoposition; Dispersants
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Zhang, T. (2016). Master's thesis of Tianshi Zhang. (Masters Thesis). McMaster University. Retrieved from http://hdl.handle.net/11375/20407
Chicago Manual of Style (16th Edition):
Zhang, Tianshi. “Master's thesis of Tianshi Zhang.” 2016. Masters Thesis, McMaster University. Accessed February 26, 2021.
http://hdl.handle.net/11375/20407.
MLA Handbook (7th Edition):
Zhang, Tianshi. “Master's thesis of Tianshi Zhang.” 2016. Web. 26 Feb 2021.
Vancouver:
Zhang T. Master's thesis of Tianshi Zhang. [Internet] [Masters thesis]. McMaster University; 2016. [cited 2021 Feb 26].
Available from: http://hdl.handle.net/11375/20407.
Council of Science Editors:
Zhang T. Master's thesis of Tianshi Zhang. [Masters Thesis]. McMaster University; 2016. Available from: http://hdl.handle.net/11375/20407

Queens University
29.
Cillero, Rodrigo Antonio.
Synthesis and Reinforcement of Peroxide-Cured Butyl Rubber Thermosets
.
Degree: Chemical Engineering, 2014, Queens University
URL: http://hdl.handle.net/1974/12623
► Isobutylene-rich elastomers provide the oxidative stability and impermeability required by many industrial applications. Halogenated derivatives support a wide range of chemical modification processes that can…
(more)
▼ Isobutylene-rich elastomers provide the oxidative stability and impermeability required by many industrial applications. Halogenated derivatives support a wide range of chemical modification processes that can overcome most performance limitations. This research involves the modification of brominated butyl rubber (BIIR) to introduce peroxide-curable functionality in addition to aminotrialkoxysilyl groups that improve interactions with siliceous fillers, and anthraquinone functionality that serves as a polymer-bound chromophore. The thesis also describes detailed studies of the influence of counter anions on imidazolium ionomer derivatives of brominated poly(isobutylene-co-p-methylstyrene) (BIMS). Exchanging bromide with dodecyl sulfate, styrene sulfonate and montmorillonite clay platelets provided new ionomer thermosets whose rheological, tensile and adhesive properties varied considerably from their parent material.
Subjects/Keywords: Ionomers
;
Nanocomposites
;
Rubber
;
Isobutylene
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Cillero, R. A. (2014). Synthesis and Reinforcement of Peroxide-Cured Butyl Rubber Thermosets
. (Thesis). Queens University. Retrieved from http://hdl.handle.net/1974/12623
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Cillero, Rodrigo Antonio. “Synthesis and Reinforcement of Peroxide-Cured Butyl Rubber Thermosets
.” 2014. Thesis, Queens University. Accessed February 26, 2021.
http://hdl.handle.net/1974/12623.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Cillero, Rodrigo Antonio. “Synthesis and Reinforcement of Peroxide-Cured Butyl Rubber Thermosets
.” 2014. Web. 26 Feb 2021.
Vancouver:
Cillero RA. Synthesis and Reinforcement of Peroxide-Cured Butyl Rubber Thermosets
. [Internet] [Thesis]. Queens University; 2014. [cited 2021 Feb 26].
Available from: http://hdl.handle.net/1974/12623.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Cillero RA. Synthesis and Reinforcement of Peroxide-Cured Butyl Rubber Thermosets
. [Thesis]. Queens University; 2014. Available from: http://hdl.handle.net/1974/12623
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Anna University
30.
Karikalchozhan C.
Studies on synthesis andCharacterization of
polybenzoxazineBased nanocomposites;.
Degree: Studies on synthesis andCharacterization of
polybenzoxazineBased nanocomposites, 2015, Anna University
URL: http://shodhganga.inflibnet.ac.in/handle/10603/43080
► The objective of the present work is to focus on the synthesis and newlinecharacterization of different functionalized polybenzoxazines and to improve newlinethe properties of polybenzoxazines…
(more)
▼ The objective of the present work is to focus on
the synthesis and newlinecharacterization of different
functionalized polybenzoxazines and to improve newlinethe
properties of polybenzoxazines by hybridizing them with nanosized
newlineorganically modified montmorillonite clay OMMT and
multiwalled carbon newlinenanotubes MWCNT to meet the requirements
of high performance newlineapplications The aromatic
diols11bis3methyl4hydroxyphenyl newlinecyclohexane
BMHPCbis3hydroxyphenylphenyl phosphate BHPP
newlinebis3hydroxyphenoxy phenyl phosphine oxide BHPPObis3
newlinehydroxyphenoxydiphenylsilaneBHDPS and bis3hydroxyphenoxy
newlinedimethylsilaneBHDMSN4hydroxyphenylmaleimideHPMcyanate
newlineester 11bis3methyl4cyanatophenylcyclohexane BMCPC
newline
Reference p. 167-189
Advisors/Committee Members: Gnanasundaram P.
Subjects/Keywords: nanocomposites; polybenzoxazine; Science and humanities
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
C, K. (2015). Studies on synthesis andCharacterization of
polybenzoxazineBased nanocomposites;. (Thesis). Anna University. Retrieved from http://shodhganga.inflibnet.ac.in/handle/10603/43080
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
C, Karikalchozhan. “Studies on synthesis andCharacterization of
polybenzoxazineBased nanocomposites;.” 2015. Thesis, Anna University. Accessed February 26, 2021.
http://shodhganga.inflibnet.ac.in/handle/10603/43080.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
C, Karikalchozhan. “Studies on synthesis andCharacterization of
polybenzoxazineBased nanocomposites;.” 2015. Web. 26 Feb 2021.
Vancouver:
C K. Studies on synthesis andCharacterization of
polybenzoxazineBased nanocomposites;. [Internet] [Thesis]. Anna University; 2015. [cited 2021 Feb 26].
Available from: http://shodhganga.inflibnet.ac.in/handle/10603/43080.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
C K. Studies on synthesis andCharacterization of
polybenzoxazineBased nanocomposites;. [Thesis]. Anna University; 2015. Available from: http://shodhganga.inflibnet.ac.in/handle/10603/43080
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
◁ [1] [2] [3] [4] [5] … [46] ▶
.