subject:(surfactant)

University of Debrecen

1. Hőss, Károly. Surfactant biológiája és farmakológiai befolyásolhatósága .

Degree: DE – Általános Orvostudományi Kar, University of Debrecen

a surfactant anyagok összetétele, funkcióik a szervezeten belül és hatásaik a légzésben és egyéb folyamatokban. Advisors/Committee Members: Pórszász, Róbert (advisor), Debreceni Egyetem::Általános Orvostudományi Kar::Farmakológiai és Farmakoterápiai Intézet (advisor).

Subjects/Keywords: surfactant

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APA (6^th Edition):

Hőss, K. (n.d.). Surfactant biológiája és farmakológiai befolyásolhatósága . (Thesis). University of Debrecen. Retrieved from http://hdl.handle.net/2437/226339

Note: this citation may be lacking information needed for this citation format:
No year of publication.
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Hőss, Károly. “Surfactant biológiája és farmakológiai befolyásolhatósága .” Thesis, University of Debrecen. Accessed March 01, 2021. http://hdl.handle.net/2437/226339.

Note: this citation may be lacking information needed for this citation format:
No year of publication.
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Hőss, Károly. “Surfactant biológiája és farmakológiai befolyásolhatósága .” Web. 01 Mar 2021.

Note: this citation may be lacking information needed for this citation format:
No year of publication.

Vancouver:

Hőss K. Surfactant biológiája és farmakológiai befolyásolhatósága . [Internet] [Thesis]. University of Debrecen; [cited 2021 Mar 01]. Available from: http://hdl.handle.net/2437/226339.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
No year of publication.

Council of Science Editors:

Hőss K. Surfactant biológiája és farmakológiai befolyásolhatósága . [Thesis]. University of Debrecen; Available from: http://hdl.handle.net/2437/226339

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
No year of publication.

2. 円子, 未貴. 界面活性剤を用いた水媒体中でのアズレン誘導体の合成反応 : ASYNTHETIC REACTION OF AZULENE DERIVATIVES IN AN AQUEOUS MEDIUM IN THE PRESENCE OF ASURFACTANT.

Degree: 2009, Hosei University / 法政大学

URL: http://hdl.handle.net/10114/6114

► Owing to the increasing environmental concerns, organic reactions in an aqueous medium with no use oforganic solvents have attracted continuing attention. Although water, as a… (more)

Subjects/Keywords: water; surfactant; azulene

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APA (6^th Edition):

円子, �. (2009). 界面活性剤を用いた水媒体中でのアズレン誘導体の合成反応 : ASYNTHETIC REACTION OF AZULENE DERIVATIVES IN AN AQUEOUS MEDIUM IN THE PRESENCE OF ASURFACTANT. (Thesis). Hosei University / 法政大学. Retrieved from http://hdl.handle.net/10114/6114

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

円子, 未貴. “界面活性剤を用いた水媒体中でのアズレン誘導体の合成反応 : ASYNTHETIC REACTION OF AZULENE DERIVATIVES IN AN AQUEOUS MEDIUM IN THE PRESENCE OF ASURFACTANT.” 2009. Thesis, Hosei University / 法政大学. Accessed March 01, 2021. http://hdl.handle.net/10114/6114.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

円子, 未貴. “界面活性剤を用いた水媒体中でのアズレン誘導体の合成反応 : ASYNTHETIC REACTION OF AZULENE DERIVATIVES IN AN AQUEOUS MEDIUM IN THE PRESENCE OF ASURFACTANT.” 2009. Web. 01 Mar 2021.

Vancouver:

円子 �. 界面活性剤を用いた水媒体中でのアズレン誘導体の合成反応 : ASYNTHETIC REACTION OF AZULENE DERIVATIVES IN AN AQUEOUS MEDIUM IN THE PRESENCE OF ASURFACTANT. [Internet] [Thesis]. Hosei University / 法政大学; 2009. [cited 2021 Mar 01]. Available from: http://hdl.handle.net/10114/6114.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

円子 �. 界面活性剤を用いた水媒体中でのアズレン誘導体の合成反応 : ASYNTHETIC REACTION OF AZULENE DERIVATIVES IN AN AQUEOUS MEDIUM IN THE PRESENCE OF ASURFACTANT. [Thesis]. Hosei University / 法政大学; 2009. Available from: http://hdl.handle.net/10114/6114

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Minnesota

3. Calixto Mancipe, Natalia. Design and Production of High-Performance Hydrophobin Surfactant Proteins Using a Dual-Domain Fusion Strategy.

Degree: MS, Bioproducts/Biosystems Science Engineering and Management, 2019, University of Minnesota

URL: http://hdl.handle.net/11299/202101

► Biosurfactants are amphipathic molecules required for vital processes in all life forms. They help to reduce surface tension facilitating interfacial processes such as breathing and… (more)

▼ Biosurfactants are amphipathic molecules required for vital processes in all life forms. They help to reduce surface tension facilitating interfacial processes such as breathing and evaporative cooling, modulate environmental conditions, control surface wettability, interact with substrates, form protective layers, etc. Thus, nature has evolved a wide variety of biosurfactants combining hydrophilic building blocks such as acid groups, sugars or polar amino acids with hydrophobic ones such as lipids, creating an enormous pallet of possibilities. Among them, hydrophobins (hereafter HFBs) are a family of self-assembling surfactant proteins with the highest surface activity known to date and an intrinsic amphipathic structure that does not require additional functional groups such as lipids or sugars. These characteristics give them a great potential for their industrial use as interfacial stabilizers, dispersal agents, surface modifiers and molecular anchors for protein immobilization on solids. The unique sequences and folding structures of HFBs particularly promote interfacial and intermolecular interactions, along with robust self-assembling mechanisms and surface activity. Unfortunately, a lack of knowledge on their sequence-structure-function relationships hinders the optimal selection of proteins for specific applications as well as manipulation of their properties. For a specific consideration, the use of HFBs for standard coating processes usually results in irregular products; at the same time, such an application requires a large-scale production that has been difficult to achieve limited by the productivity of native organisms, the HFB toxicity for heterologous hosts and the challenges of their purification. These obstacles suggest the need to leverage HFBs’ interfacial behaviors to better fit a broader range of applications. Therefore, an HFB from the fungus Trichoderma reesei is taken as a model surfactant protein in this work to explore the variation of its characteristics by a modular fusion strategy, as an alternative approach to protein directed mutagenesis and engineering. We aim to combine its high surfactant activity with the functionalities of different fusion partners to enhance its productivity and interfacial properties. Our results show that the fusion with a small metal binding protein from Nitrosomonas eurepaea (SMBP) achieves much improved product solubility and easier purification without compromising the hydrophobin properties. SMBP-HFBII shows a critical micelle concentration (CMC) < 0.5 mg/l and is prone to form stable nanobubbles of 50-60 nm radius and thin films at liquid-air interfaces. The adsorption of SMBP-HFBII on hydrophilic substrates (mica and glass) generates homogeneous coatings that reverse their wettability increasing the water contact angle (WCA) 460% and 70%, respectively. Adsorbed SMBP-HFBII also demonstrated a slight increase of Botrytis cinerea spores’ adhesion to coated glass, dependent on pH and spore concentration. This work shows that fusion HFBs can expand the…

Subjects/Keywords: Hydrophobin; Interfacial; Surfactant

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APA (6^th Edition):

Calixto Mancipe, N. (2019). Design and Production of High-Performance Hydrophobin Surfactant Proteins Using a Dual-Domain Fusion Strategy. (Masters Thesis). University of Minnesota. Retrieved from http://hdl.handle.net/11299/202101

Chicago Manual of Style (16^th Edition):

Calixto Mancipe, Natalia. “Design and Production of High-Performance Hydrophobin Surfactant Proteins Using a Dual-Domain Fusion Strategy.” 2019. Masters Thesis, University of Minnesota. Accessed March 01, 2021. http://hdl.handle.net/11299/202101.

MLA Handbook (7^th Edition):

Calixto Mancipe, Natalia. “Design and Production of High-Performance Hydrophobin Surfactant Proteins Using a Dual-Domain Fusion Strategy.” 2019. Web. 01 Mar 2021.

Vancouver:

Calixto Mancipe N. Design and Production of High-Performance Hydrophobin Surfactant Proteins Using a Dual-Domain Fusion Strategy. [Internet] [Masters thesis]. University of Minnesota; 2019. [cited 2021 Mar 01]. Available from: http://hdl.handle.net/11299/202101.

Council of Science Editors:

Calixto Mancipe N. Design and Production of High-Performance Hydrophobin Surfactant Proteins Using a Dual-Domain Fusion Strategy. [Masters Thesis]. University of Minnesota; 2019. Available from: http://hdl.handle.net/11299/202101

University of Oklahoma

4. Baker, Danielle Kimberly. CHARACTERIZATION OF POLYETHOXYLATED ALKYL PHENOLS WITH A HIGH DEGREE OF ETHOXYLATION AT THE SOLID-LIQUID INTERFACE.

Degree: PhD, 2016, University of Oklahoma

URL: http://hdl.handle.net/11244/34699

► Fully characterizing the behavior of a surfactant, from the mechanism of adsorption to the formation of micelles, is vital when taking the surfactant out of… (more)

▼ Fully characterizing the behavior of a surfactant, from the mechanism of adsorption to the formation of micelles, is vital when taking the surfactant out of the lab and into the real world. The critical micelle concentration, cloud point, and mechanism of adsorption are only a few aspects of a nonionic surfactant that must be understood. For nonionic surfactant solutions, the solution properties can change depending on the system temperature, salt concentration, salt type, etc. This dissertation focuses on the adsorption of high polyethoxylated alkyl phenols, more than 25 ethylene oxide units, on the hydrophilic silica surface and how environmental conditions affect the surfactant adsorption at the solid-liquid interface. The effects of ions of different salts on the adsorption densities and the shape of developed adsorption isotherms are related to the Hofmeister series. Depending on the ions present in solution, the maximum adsorption density is shown to increase or decrease in accordance with the Hofmeister series’s classification of ion as salting in or salting out. The salting out effect of sodium chloride causing an increase in adsorption density as well as a decrease in nonionic surfactant cloud points is examined as a fraction fluid, containing a high polyethoxylated alky phenol, travels through a packed ground shale or sand column. The effect of sodium chloride on a select few ionic surfactants traveling through the same packed ground shale or sand column is also analyzed. For the high polyethoxylated alky phenols, the formation of a coacervate hindered the surfactant migrating to the end of the column. For the ionic surfactants, the migration to the end of the packed column varied depending on the surfactant’s salt and temperature tolerance. Lastly, evidence is given with UV, quartz crystal microbalance, and ellipsometry analysis for a different mechanisms of adsorption for polyethoxylated alky phenols with a high degree of ethoxylation versus a low degree of ethoxylation. Advisors/Committee Members: Harwell, Jeffrey (advisor), Lobban, Lance (committee member), O'Rear, Edgar (committee member), Sabatini, David (committee member), Shiau, Benjamin (committee member).

Subjects/Keywords: Ethoxylated nonionic surfactant

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APA (6^th Edition):

Baker, D. K. (2016). CHARACTERIZATION OF POLYETHOXYLATED ALKYL PHENOLS WITH A HIGH DEGREE OF ETHOXYLATION AT THE SOLID-LIQUID INTERFACE. (Doctoral Dissertation). University of Oklahoma. Retrieved from http://hdl.handle.net/11244/34699

Chicago Manual of Style (16^th Edition):

Baker, Danielle Kimberly. “CHARACTERIZATION OF POLYETHOXYLATED ALKYL PHENOLS WITH A HIGH DEGREE OF ETHOXYLATION AT THE SOLID-LIQUID INTERFACE.” 2016. Doctoral Dissertation, University of Oklahoma. Accessed March 01, 2021. http://hdl.handle.net/11244/34699.

MLA Handbook (7^th Edition):

Baker, Danielle Kimberly. “CHARACTERIZATION OF POLYETHOXYLATED ALKYL PHENOLS WITH A HIGH DEGREE OF ETHOXYLATION AT THE SOLID-LIQUID INTERFACE.” 2016. Web. 01 Mar 2021.

Vancouver:

Baker DK. CHARACTERIZATION OF POLYETHOXYLATED ALKYL PHENOLS WITH A HIGH DEGREE OF ETHOXYLATION AT THE SOLID-LIQUID INTERFACE. [Internet] [Doctoral dissertation]. University of Oklahoma; 2016. [cited 2021 Mar 01]. Available from: http://hdl.handle.net/11244/34699.

Council of Science Editors:

Baker DK. CHARACTERIZATION OF POLYETHOXYLATED ALKYL PHENOLS WITH A HIGH DEGREE OF ETHOXYLATION AT THE SOLID-LIQUID INTERFACE. [Doctoral Dissertation]. University of Oklahoma; 2016. Available from: http://hdl.handle.net/11244/34699

Texas A&M University

5. Saputra, I Wayan Rakananda. Experimental and Upscaling Numerical Simulation Study on the Effect of Surfactant Additives in Completion Fluids on Eagle Ford Shale Oil Reservoir.

Degree: MS, Petroleum Engineering, 2018, Texas A&M University

URL: http://hdl.handle.net/1969.1/173482

► The addition of surfactant to the completion fluid of a shale oil well has been widely believed to improve well performance. Previous laboratory studies showed… (more)

▼ The addition of surfactant to the completion fluid of a shale oil well has been widely believed to improve well performance. Previous laboratory studies showed that the method is based on enhanced capillary-driven spontaneous imbibition as a result of surfactant interaction with the oil/water/rock system. However, published work on this subject is highly limited on the result in laboratory-scale work. The purpose of this study is to fill this gap by providing a field-scale impact of SASI as derived by numerical model-based upscaling workflow. This study provides a complete workflow on assessing the effectivity of SASI which consists of three big parts: laboratory experiments, lab-scale modelling, and field-scale modelling. On the laboratory experiment, interfacial tension, contact angle, zeta potential, surfactant adsorption isotherm, and ultimately, spontaneous imbibition were done as part of data gathering process. Lab-scale modelling was done to model the spontaneous imbibition of the previous step to construct the relative permeability and capillary pressure data for upscaling purpose. In order to incorporate the heterogeneity commonly found on shale rock samples, a CT-based rock digitalization method was implemented to build the lab-scale model. Utilizing all data obtained from lab-scale model and laboratory experiments, the field-scale model was then constructed and the effect of SASI on the field-scale was calculated. Four fluid systems were tested in this work consisting of one case of water without surfactant component as the base case and three cases with different surfactants. Reduction of IFT, alteration of wettability to water-wet region, and stable zeta potential were observed for the three surfactants tested. Adsorption isotherm measurement also showed a positive correlation between the wettability alteration performance and the amount of surfactant adsorbed. Oil production from spontaneous imbibition was increased seven-fold on the best surfactant tested when compared to the base case. Through numerical upscaling, field-scale effect of SASI was also approximated. With the result of 22.7% increase of initial oil production rate and 18.4% improvement of cumulative oil from the best surfactant tested. In addition, a rigorous sensitivity analysis incorporating seven different reservoir properties was also done and the effectivity of SASI was found to be a function of some of the tested reservoir properties. Advisors/Committee Members: Schechter, David S (advisor), Barrufet, Maria A (committee member), Liang, Jenn-Tai (committee member).

Subjects/Keywords: Surfactant; Completion Fluid; Upscaling; Surfactant Modelling; Surfactant-Assisted Spontaneous Imbibition; Rock Digitalization

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APA (6^th Edition):

Saputra, I. W. R. (2018). Experimental and Upscaling Numerical Simulation Study on the Effect of Surfactant Additives in Completion Fluids on Eagle Ford Shale Oil Reservoir. (Masters Thesis). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/173482

Chicago Manual of Style (16^th Edition):

Saputra, I Wayan Rakananda. “Experimental and Upscaling Numerical Simulation Study on the Effect of Surfactant Additives in Completion Fluids on Eagle Ford Shale Oil Reservoir.” 2018. Masters Thesis, Texas A&M University. Accessed March 01, 2021. http://hdl.handle.net/1969.1/173482.

MLA Handbook (7^th Edition):

Saputra, I Wayan Rakananda. “Experimental and Upscaling Numerical Simulation Study on the Effect of Surfactant Additives in Completion Fluids on Eagle Ford Shale Oil Reservoir.” 2018. Web. 01 Mar 2021.

Vancouver:

Saputra IWR. Experimental and Upscaling Numerical Simulation Study on the Effect of Surfactant Additives in Completion Fluids on Eagle Ford Shale Oil Reservoir. [Internet] [Masters thesis]. Texas A&M University; 2018. [cited 2021 Mar 01]. Available from: http://hdl.handle.net/1969.1/173482.

Council of Science Editors:

Saputra IWR. Experimental and Upscaling Numerical Simulation Study on the Effect of Surfactant Additives in Completion Fluids on Eagle Ford Shale Oil Reservoir. [Masters Thesis]. Texas A&M University; 2018. Available from: http://hdl.handle.net/1969.1/173482

University of Saskatchewan

6. Sowah-Kuma, David. Molecular-level Mixing Behavior, Structure and Interactions of Mixed Hydrogenated-Fluorinated Surfactant Langmuir Monolayers.

Degree: 2020, University of Saskatchewan

URL: http://hdl.handle.net/10388/13174

► This thesis constitutes findings from several projects designed with an ultimate goal of understanding the mixing behavior, molecular structures and interactions that play out in… (more)

▼ This thesis constitutes findings from several projects designed with an ultimate goal of understanding the mixing behavior, molecular structures and interactions that play out in mixtures of perfluorotetradecanoic acid with hydrogenated surfactants at the micro and molecular-level. In particular, this thesis explores the importance of chemical structure of surfactants in controlling properties of surfactant mixtures. Notably, the difference in surfactant chain length and head group are key chemical identities which control mixing behavior. Therefore, mixtures of perfluorotetradecanoic acid (PF; CF3(CF2)12COOH) with nonadecanoic acid (ND; CH3(CH2)17COOH) were explored in the context of closely related mixed surfactant systems to understand how the difference in chain length controls miscibility, and to validate the miscibility rule proposed for these types of mixed systems. In addition, the impact of surfactant head group was explored by switching the carboxylic functional group on the nonadecanoic acid to an alcohol functional group (nonadecanol; NDOH; CH3(CH2)18OH). Both the fatty acid and fatty alcohol were immiscible with PF in monolayers, and formed phase-separated domains. These studies were all carried out using Langmuir trough compression isotherms, Brewster angle microscopy imaging and Atomic force microscopy imaging to characterize the monolayer films both at air-water and solid-air interfaces. However, during the course of these studies, it was noted that these characterization techniques do not provide direct information about film structure at the molecular length scale. In recognition of this shortcoming, a molecular-level study of several mixed surfactant systems at the air-water interface was performed using the synchrotron-based liquid surface X-ray scattering techniques Grazing incidence X-ray diffraction (GIXD), specular X-ray reflectivity (XR) and X-ray fluorescence near total reflection (XFNTR). A benchmark mixed film system comprised of arachidic acid (AA, C19H39COOH) and PF was adopted for this study. In all cases, the two components in the mixed film behaved entirely independently of film composition, which is exactly the expected result for a fully phase-separated, immiscible system. The mixed film systems explored here were monomeric fatty acids and were chosen to understand how the molecular-level interaction of the films contribute to phase-separation. However, with the emerging interest in dimeric compounds (gemini surfactants), the mixing behavior of anionic gemini surfactants (Ace(12)-2-Ace(12) and Ace(18)-2-Ace(18)) with PF was explored in comparison to the monomeric hydrogenated-PF mixed film systems. The gemini surfactant Ace(12)-2-Ace(12) was chosen to understand the effect and role dimeric hydrogenated surfactants play in miscibility with fluorinated surfactants (PF). The Ace(12)-2-Ace(12)-PF mixed film system was found to be miscible at the molecular-level with Ace(12)-2-Ace(12) showing an amorphous state while PF was highly crystalline. The mixing behavior of the longer… Advisors/Committee Members: Paige, Matthew F., Scott, Robert W., Wang, Jiang, Bradley, Michael, Sanders, David.

Subjects/Keywords: Molecular-level; Hydrogenated Surfactant; Fluorinated Surfactant; Mixed Surfactant; Langmuir Monolayers; Phase-separation; Mixing behavior

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APA (6^th Edition):

Sowah-Kuma, D. (2020). Molecular-level Mixing Behavior, Structure and Interactions of Mixed Hydrogenated-Fluorinated Surfactant Langmuir Monolayers. (Thesis). University of Saskatchewan. Retrieved from http://hdl.handle.net/10388/13174

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Sowah-Kuma, David. “Molecular-level Mixing Behavior, Structure and Interactions of Mixed Hydrogenated-Fluorinated Surfactant Langmuir Monolayers.” 2020. Thesis, University of Saskatchewan. Accessed March 01, 2021. http://hdl.handle.net/10388/13174.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Sowah-Kuma, David. “Molecular-level Mixing Behavior, Structure and Interactions of Mixed Hydrogenated-Fluorinated Surfactant Langmuir Monolayers.” 2020. Web. 01 Mar 2021.

Vancouver:

Sowah-Kuma D. Molecular-level Mixing Behavior, Structure and Interactions of Mixed Hydrogenated-Fluorinated Surfactant Langmuir Monolayers. [Internet] [Thesis]. University of Saskatchewan; 2020. [cited 2021 Mar 01]. Available from: http://hdl.handle.net/10388/13174.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Sowah-Kuma D. Molecular-level Mixing Behavior, Structure and Interactions of Mixed Hydrogenated-Fluorinated Surfactant Langmuir Monolayers. [Thesis]. University of Saskatchewan; 2020. Available from: http://hdl.handle.net/10388/13174

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

7. Naqvi, Andleeb Zehra. Studies on surfactant system; -.

Degree: Chemistry, 2000, Aligarh Muslim University

URL: http://shodhganga.inflibnet.ac.in/handle/10603/28612

non

Bibliography p. 120-137

Advisors/Committee Members: Kabir-ud-din.

Subjects/Keywords: Surfactant; System

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APA (6^th Edition):

Naqvi, A. Z. (2000). Studies on surfactant system; -. (Thesis). Aligarh Muslim University. Retrieved from http://shodhganga.inflibnet.ac.in/handle/10603/28612

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Naqvi, Andleeb Zehra. “Studies on surfactant system; -.” 2000. Thesis, Aligarh Muslim University. Accessed March 01, 2021. http://shodhganga.inflibnet.ac.in/handle/10603/28612.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Naqvi, Andleeb Zehra. “Studies on surfactant system; -.” 2000. Web. 01 Mar 2021.

Vancouver:

Naqvi AZ. Studies on surfactant system; -. [Internet] [Thesis]. Aligarh Muslim University; 2000. [cited 2021 Mar 01]. Available from: http://shodhganga.inflibnet.ac.in/handle/10603/28612.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Naqvi AZ. Studies on surfactant system; -. [Thesis]. Aligarh Muslim University; 2000. Available from: http://shodhganga.inflibnet.ac.in/handle/10603/28612

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Alberta

8. Stanley, Bob. Acid Labile Surfactants Containing Ketal-Linkage in Micellar Electrokinetic Chromatography and Electrospray Ionization Mass Spectrometry.

Degree: MS, Department of Chemistry, 2012, University of Alberta

URL: https://era.library.ualberta.ca/files/f7623c709

► The combination of micellar electrokinetic chromatography (MEKC) with electrospray ionization mass spectrometry (ESI-MS) would yield a very powerful analytical technique. However, hyphenating both techniques is… (more)

Subjects/Keywords: ALS; MEKC; ESI-MS; Surfactant

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APA (6^th Edition):

Stanley, B. (2012). Acid Labile Surfactants Containing Ketal-Linkage in Micellar Electrokinetic Chromatography and Electrospray Ionization Mass Spectrometry. (Masters Thesis). University of Alberta. Retrieved from https://era.library.ualberta.ca/files/f7623c709

Chicago Manual of Style (16^th Edition):

Stanley, Bob. “Acid Labile Surfactants Containing Ketal-Linkage in Micellar Electrokinetic Chromatography and Electrospray Ionization Mass Spectrometry.” 2012. Masters Thesis, University of Alberta. Accessed March 01, 2021. https://era.library.ualberta.ca/files/f7623c709.

MLA Handbook (7^th Edition):

Stanley, Bob. “Acid Labile Surfactants Containing Ketal-Linkage in Micellar Electrokinetic Chromatography and Electrospray Ionization Mass Spectrometry.” 2012. Web. 01 Mar 2021.

Vancouver:

Stanley B. Acid Labile Surfactants Containing Ketal-Linkage in Micellar Electrokinetic Chromatography and Electrospray Ionization Mass Spectrometry. [Internet] [Masters thesis]. University of Alberta; 2012. [cited 2021 Mar 01]. Available from: https://era.library.ualberta.ca/files/f7623c709.

Council of Science Editors:

Stanley B. Acid Labile Surfactants Containing Ketal-Linkage in Micellar Electrokinetic Chromatography and Electrospray Ionization Mass Spectrometry. [Masters Thesis]. University of Alberta; 2012. Available from: https://era.library.ualberta.ca/files/f7623c709

Cornell University

9. Chen, Hao. A Surfactant-Free Strategy For Synthesizing And Processing Intermetallic Platinum-Based Nanoparticle Catalysts.

Degree: PhD, Chemistry and Chemical Biology, 2013, Cornell University

URL: http://hdl.handle.net/1813/34249

► In this thesis, a surfactant-free Np-KCl matrix method (Np stands for nanoparticle, KCl is potassium chloride) is developed for the synthesis of nanoparticles with controlled… (more)

Subjects/Keywords: surfactant free; nanoparticle; catalyst

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APA (6^th Edition):

Chen, H. (2013). A Surfactant-Free Strategy For Synthesizing And Processing Intermetallic Platinum-Based Nanoparticle Catalysts. (Doctoral Dissertation). Cornell University. Retrieved from http://hdl.handle.net/1813/34249

Chicago Manual of Style (16^th Edition):

Chen, Hao. “A Surfactant-Free Strategy For Synthesizing And Processing Intermetallic Platinum-Based Nanoparticle Catalysts.” 2013. Doctoral Dissertation, Cornell University. Accessed March 01, 2021. http://hdl.handle.net/1813/34249.

MLA Handbook (7^th Edition):

Chen, Hao. “A Surfactant-Free Strategy For Synthesizing And Processing Intermetallic Platinum-Based Nanoparticle Catalysts.” 2013. Web. 01 Mar 2021.

Vancouver:

Chen H. A Surfactant-Free Strategy For Synthesizing And Processing Intermetallic Platinum-Based Nanoparticle Catalysts. [Internet] [Doctoral dissertation]. Cornell University; 2013. [cited 2021 Mar 01]. Available from: http://hdl.handle.net/1813/34249.

Council of Science Editors:

Chen H. A Surfactant-Free Strategy For Synthesizing And Processing Intermetallic Platinum-Based Nanoparticle Catalysts. [Doctoral Dissertation]. Cornell University; 2013. Available from: http://hdl.handle.net/1813/34249

Texas A&M University

10. Sayedakram, Nawaf Ibrahim A. Simulation Study to Investigate the Effect of Natural Fractures on the Performance of Surfactant-Polymer Flood in Carbonate Reservoirs.

Degree: MS, Petroleum Engineering, 2011, Texas A&M University

URL: http://hdl.handle.net/1969.1/ETD-TAMU-2010-08-8394

► This thesis presents a comprehensive simulation study on the impact of natural fractures on the performance of surfactant polymer flood in a field scale surfactantpolymer… (more)

▼ This thesis presents a comprehensive simulation study on the impact of natural fractures on the performance of surfactant polymer flood in a field scale surfactantpolymer flood. The simulation model utilized for the study is a dual porosity dual permeability model representing 1/8 of a 20-acre 5-spot pattern. The model parameters studied include wettability alteration, IFT changes and mobility reduction effect. The results of this study clearly indicate the importance of reservoir description and fracture modeling for a successful surfactant-polymer flood. Naturally fractured carbonate reservoirs are usually characterized by mixed wettablility and low matrix permeability which leads to low oil recovery and high remaining oil saturation. Enhanced oil recovery methods such as surfactant-polymer flood (SPF) enhance the recovery by increasing the spontaneous imbibitions either by lowering the interfacial tension or altering the wettability. However, one of the main reasons for failed surfactant-polymer floods is under-estimating the importance of the reservoir especially the description of natural fractures and their effect on recovery. Sensitivity runs were made to compare oil recovery capillary force, buoyancy force and viscous force. The simulation study indicates that critical water saturation should be reached before the start of surfactant-polymer flood to maximize oil recovery and utilize the capillary force. Also, when a surfactant alters the rock wettability, an optimum IFT should be identified for faster and higher imbibitions. The study shows that a contrast in permeability between that of the fracture and that of the matrix will result in a slightly lower oil recovery. Having the fracture perpendicular to the injector producer will result in a higher areal sweep and lower residual oil. A sensitivity study on the effect of the size of surfactant polymer slug was not conclusive. Maximum adsorption capacity was reached which was one of the causes of low imbibitions rate. Following the surfactant-polymer with water flood was able to reverse the adsorption and restore some of the movable oil. The results show that if the enhanced fluid that alter the wettability, imbibed in the matrix, injecting high IFT brine will increase the rate of imbibition. The study calls for further investigation of this phenomenon through research using a scaled laboratory model to verify the simulation results. Advisors/Committee Members: Mamora, Daulat D. (advisor), Schechter, David S. (committee member), Gresham, Larry . G. (committee member).

Subjects/Keywords: surfactant; polymer; chemical; simulation; EOR

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APA (6^th Edition):

Sayedakram, N. I. A. (2011). Simulation Study to Investigate the Effect of Natural Fractures on the Performance of Surfactant-Polymer Flood in Carbonate Reservoirs. (Masters Thesis). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/ETD-TAMU-2010-08-8394

Chicago Manual of Style (16^th Edition):

Sayedakram, Nawaf Ibrahim A. “Simulation Study to Investigate the Effect of Natural Fractures on the Performance of Surfactant-Polymer Flood in Carbonate Reservoirs.” 2011. Masters Thesis, Texas A&M University. Accessed March 01, 2021. http://hdl.handle.net/1969.1/ETD-TAMU-2010-08-8394.

MLA Handbook (7^th Edition):

Sayedakram, Nawaf Ibrahim A. “Simulation Study to Investigate the Effect of Natural Fractures on the Performance of Surfactant-Polymer Flood in Carbonate Reservoirs.” 2011. Web. 01 Mar 2021.

Vancouver:

Sayedakram NIA. Simulation Study to Investigate the Effect of Natural Fractures on the Performance of Surfactant-Polymer Flood in Carbonate Reservoirs. [Internet] [Masters thesis]. Texas A&M University; 2011. [cited 2021 Mar 01]. Available from: http://hdl.handle.net/1969.1/ETD-TAMU-2010-08-8394.

Council of Science Editors:

Sayedakram NIA. Simulation Study to Investigate the Effect of Natural Fractures on the Performance of Surfactant-Polymer Flood in Carbonate Reservoirs. [Masters Thesis]. Texas A&M University; 2011. Available from: http://hdl.handle.net/1969.1/ETD-TAMU-2010-08-8394

Texas A&M University

11. Zhou, Xilong. Bulk and Adsorption Properties of Surfactant Entrapped in Polyelectrolyte Complex Nanoparticles.

Degree: MS, Petroleum Engineering, 2016, Texas A&M University

URL: http://hdl.handle.net/1969.1/157737

► With the wide application of nanotechnology in petroleum industry, transportation of nanoparticles in porous media has attracted a growing interest. This thesis focuses on investigating… (more)

▼ With the wide application of nanotechnology in petroleum industry, transportation of nanoparticles in porous media has attracted a growing interest. This thesis focuses on investigating the bulk and adsorption properties of surfactant entrapped in polyelectrolyte complex (PEC) nanoparticles. A stable surfactant entrapped in PEC system was optimized and obtained varying parameters of the preparation protocol including pH of PEI, surfactant/PEI concentrations and surfactant to PEI weight ratio. Meanwhile, the effect of different parameters on the bulk properties of PEC was investigated. In addition, surfactant entrapment efficiency (EE) of PEC was obtained using methylene blue (MB) titration method. A TOC/TN analytical method was developed to study the static adsorption of PEC via measuring the concentration of PEI and surfactant in the PEC suspension. The prepared PEC suspension was agitated with sand grains for different time periods and analyzed using the developed TOC/TN analytical method. The TOC/TN results showed a large decrease of surfactant concentration and a small decrease of PEI concentration after shaking equilibrium. In addition, study revealed that PEC coated sand grains were more likely to adsorb surfactant than those not coated by PEC. A hypothesis of PEC adsorption model was proposed based on the observations and proved. During the PEC adsorption test, a large amount of PECs and a small amount of free PEI will be firstly adsorbed onto the sand surface and form the first layer. Then free surfactant will be adsorbed onto PEC/PEI coated surface due to the electrostatic reaction and the increasing surface area of the distorted nanoparticles on sand surface. Quartz crystal microbalance with dissipation (QCM-D) instrument and silicon sensor were used to confirm the proposed model by monitoring the real-time adsorption of PEC and surfactant in DI water. The silicon sensor was firstly flushed and incubated by PEC suspension, rinsed by DI water and then rinsed and incubated by surfactant solution. From frequency and dissipation data, the formation of the rigid PEC/PEI layer and the viscoelastic surfactant layer were detected. This observation agreed well with the proposed PEC adsorption model. Based on the proposed model, the wettability of rock surface may be changed by surfactant entrapped in PEC system through the amphiphilic properties of the surfactants adsorbed on the rock surface. The effect of salinity and sand type on PEC adsorption was investigated, too. PEC adsorbed to sand surface faster in electrolyte solution than in DI water which can be explained by the Derjaguin-Landau-Verwey-Overbeek (DLVO) theory. In addition, in DI water a faster adsorption of PEC on carbonate than sandstone was observed. Advisors/Committee Members: Liang, Jenn-Tai (advisor), Nasr-El-Din, Hisham (committee member), Cheng, Zhengdong (committee member).

Subjects/Keywords: surfactant; polyelectrolyte; nanoparticles; adsorption

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APA (6^th Edition):

Zhou, X. (2016). Bulk and Adsorption Properties of Surfactant Entrapped in Polyelectrolyte Complex Nanoparticles. (Masters Thesis). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/157737

Chicago Manual of Style (16^th Edition):

Zhou, Xilong. “Bulk and Adsorption Properties of Surfactant Entrapped in Polyelectrolyte Complex Nanoparticles.” 2016. Masters Thesis, Texas A&M University. Accessed March 01, 2021. http://hdl.handle.net/1969.1/157737.

MLA Handbook (7^th Edition):

Zhou, Xilong. “Bulk and Adsorption Properties of Surfactant Entrapped in Polyelectrolyte Complex Nanoparticles.” 2016. Web. 01 Mar 2021.

Vancouver:

Zhou X. Bulk and Adsorption Properties of Surfactant Entrapped in Polyelectrolyte Complex Nanoparticles. [Internet] [Masters thesis]. Texas A&M University; 2016. [cited 2021 Mar 01]. Available from: http://hdl.handle.net/1969.1/157737.

Council of Science Editors:

Zhou X. Bulk and Adsorption Properties of Surfactant Entrapped in Polyelectrolyte Complex Nanoparticles. [Masters Thesis]. Texas A&M University; 2016. Available from: http://hdl.handle.net/1969.1/157737

Texas A&M University

12. Ng, Jun Hong Clarence. Corrosion of C-95, N-80, S13Cr Metal at HP/HT Conditions and the Effects of Viscoelastic Surfactants on Corrosion.

Degree: MS, Petroleum Engineering, 2017, Texas A&M University

URL: http://hdl.handle.net/1969.1/165877

► In the oil and gas industry, corrosion damage during treatments often occurs due to the use of corrosive treatment fluids and can result in problems… (more)

▼ In the oil and gas industry, corrosion damage during treatments often occurs due to the use of corrosive treatment fluids and can result in problems such as tubular or equipment failure, and leaking. These problems can incur high costs of maintenance and pose as safety hazards to workers on site. Hydrochloric acid (HCl) is a cheap and cost effective fluid that is commonly used in the oil and gas industry to dissolve scale and acidize formations. However, at high temperatures, it becomes extremely corrosive. Alternative acidizing fluids are typically used in place of HCl at these temperatures. However, in the event that HCl is required, corrosion inhibitors are added to the solution. In this work, the corrosion rates of two blends of HCl based acidizing fluids were tested on C-95, N-80, and S13Cr. The results show that the corrosion rate of the acidizing fluid is the lowest for N-80 metal under all conditions tested. An increase in corrosion rates for blend A tests as acid concentration increased was observed to be higher at 280°F than at 240°F despite a 1 vol% increase in corrosion inhibitor concentration to compensate for the increase in acid concentration. The increase in corrosion rates at 240°F ranged from 0% to 9% while the range increased to 17% to 36% at 280°F. Blend B showed significant reduction in protection for N-80 at 280°F when acid concentration was raised to 20 wt% with the change in corrosion rate increasing to 68.2% from 9.2% at 240°F. In addition, VES was shown to influence the corrosion rates of N-80 and S13Cr metal negatively. The absence of VES from blend B at 280°F showed a corrosion rate of 0.0216 lb/ft² and 0.0159 lb/ft² for S13Cr and N-80, respectively. These rates increased to 0.0253 lb/ft² and 0.0169 lb/ft² with 5% VES, and to 0.0264 lb/ft² and 0.0187 lb/ft² respectively when 8% VES was used. A green coloration of the post-corrosion solution was observed when blend A was used with S13Cr metal. Advisors/Committee Members: Nasr-El-Din, Hisham (advisor), Hascakir, Berna (committee member), El-Halwagi, Mahmoud (committee member).

Subjects/Keywords: Corrosion; Hydrochloric acid; Viscoelastic Surfactant

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APA (6^th Edition):

Ng, J. H. C. (2017). Corrosion of C-95, N-80, S13Cr Metal at HP/HT Conditions and the Effects of Viscoelastic Surfactants on Corrosion. (Masters Thesis). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/165877

Chicago Manual of Style (16^th Edition):

Ng, Jun Hong Clarence. “Corrosion of C-95, N-80, S13Cr Metal at HP/HT Conditions and the Effects of Viscoelastic Surfactants on Corrosion.” 2017. Masters Thesis, Texas A&M University. Accessed March 01, 2021. http://hdl.handle.net/1969.1/165877.

MLA Handbook (7^th Edition):

Ng, Jun Hong Clarence. “Corrosion of C-95, N-80, S13Cr Metal at HP/HT Conditions and the Effects of Viscoelastic Surfactants on Corrosion.” 2017. Web. 01 Mar 2021.

Vancouver:

Ng JHC. Corrosion of C-95, N-80, S13Cr Metal at HP/HT Conditions and the Effects of Viscoelastic Surfactants on Corrosion. [Internet] [Masters thesis]. Texas A&M University; 2017. [cited 2021 Mar 01]. Available from: http://hdl.handle.net/1969.1/165877.

Council of Science Editors:

Ng JHC. Corrosion of C-95, N-80, S13Cr Metal at HP/HT Conditions and the Effects of Viscoelastic Surfactants on Corrosion. [Masters Thesis]. Texas A&M University; 2017. Available from: http://hdl.handle.net/1969.1/165877

North Carolina State University

13. Marinakos, Efstathia (Stella) Maria. Synthesis of Gold/Polymer Composites, Micelle/Polymer Composites, and Polymer Nanocapsules. Diffusion Studies and Encapsulation of Guest Molecules.

Degree: PhD, Chemistry, 2002, North Carolina State University

URL: http://www.lib.ncsu.edu/resolver/1840.16/3660

► The template synthesis of core / shell particles is described. One template employed as the core is a gold particle. Polymers employed as the shell… (more)

Subjects/Keywords: surfactant; nanoparticles

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APA (6^th Edition):

Marinakos, E. (. M. (2002). Synthesis of Gold/Polymer Composites, Micelle/Polymer Composites, and Polymer Nanocapsules. Diffusion Studies and Encapsulation of Guest Molecules. (Doctoral Dissertation). North Carolina State University. Retrieved from http://www.lib.ncsu.edu/resolver/1840.16/3660

Chicago Manual of Style (16^th Edition):

Marinakos, Efstathia (Stella) Maria. “Synthesis of Gold/Polymer Composites, Micelle/Polymer Composites, and Polymer Nanocapsules. Diffusion Studies and Encapsulation of Guest Molecules.” 2002. Doctoral Dissertation, North Carolina State University. Accessed March 01, 2021. http://www.lib.ncsu.edu/resolver/1840.16/3660.

MLA Handbook (7^th Edition):

Marinakos, Efstathia (Stella) Maria. “Synthesis of Gold/Polymer Composites, Micelle/Polymer Composites, and Polymer Nanocapsules. Diffusion Studies and Encapsulation of Guest Molecules.” 2002. Web. 01 Mar 2021.

Vancouver:

Marinakos E(M. Synthesis of Gold/Polymer Composites, Micelle/Polymer Composites, and Polymer Nanocapsules. Diffusion Studies and Encapsulation of Guest Molecules. [Internet] [Doctoral dissertation]. North Carolina State University; 2002. [cited 2021 Mar 01]. Available from: http://www.lib.ncsu.edu/resolver/1840.16/3660.

Council of Science Editors:

Marinakos E(M. Synthesis of Gold/Polymer Composites, Micelle/Polymer Composites, and Polymer Nanocapsules. Diffusion Studies and Encapsulation of Guest Molecules. [Doctoral Dissertation]. North Carolina State University; 2002. Available from: http://www.lib.ncsu.edu/resolver/1840.16/3660

Oregon State University

14. Lee, Hyo Jin. Molecular origins of surfactant-mediated stabilization of protein.

Degree: PhD, Chemical Engineering, 2012, Oregon State University

URL: http://hdl.handle.net/1957/33834

► Nonionic surfactants are commonly used to stabilize proteins during upstream and downstream processing and drug formulation. Surfactants stabilize the proteins through two major mechanisms: (i)… (more)

▼ Nonionic surfactants are commonly used to stabilize proteins during upstream and downstream processing and drug formulation. Surfactants stabilize the proteins through two major mechanisms: (i) their preferential location at nearby interfaces, in this way precluding protein adsorption; and/or (ii) their association with protein into "complexes" that prevent proteins from interacting with surfaces as well as each other. In general, both mechanisms must be at play for effective protein stabilization against aggregation and activity loss, but selection of surfactants for protein stabilization currently is not made with benefit of any quantitative, predictive information to ensure that this requirement is met. In certain circumstances the kinetics of surface tension depression (by surfactant) in protein-surfactant mixtures has been observed to be greater than that recorded for surfactant alone at the same concentration. We compared surface tension depression by poloxamer 188 (Pluronic® F68), polysorbate 80 (PS 80), and polysorbate 20 (PS 20) in the presence and absence of lysozyme and recombinant protein, at different surfactant concentrations and temperatures. The kinetic results were interpreted with reference to a mechanism for surfactant adsorption governed by the formation of a rate-limiting structural intermediate (i.e., an "activated complex") comprised of surfactant aggregates and protein. The presence of lysozyme was seen to increase the rate of surfactant adsorption in relation to surfactant acting alone at the same concentrations for the polysorbates while less of an effect was seen for Pluronic® F68. However, the addition of salt was observed to accelerate the surface tension depression of Pluronic® F68 in the presence of lysozyme. The addition of a more hydrophobic, surface active protein (Amgen recombinant protein) in place of lysozyme resulted in greater enhancement of surfactant adsorption than that recorded in the presence of lysozyme. A simple thermodynamic analysis indicated the presence of protein caused a reduction in ∆G for the surfactant adsorption process, with this reduction deriving entirely from a reduction in ∆H. We suggest that protein accelerates the adsorption of these surfactants by disrupting their self associations, increasing the concentration of surfactant monomers near the interface. Based on these air-water tensiometry results, it is fair to expect that accelerated surfactant adsorption in the presence of protein (observed with PS 20 and PS 80) will occur with surfactants that stabilize protein mainly by their own adsorption at interfaces, and that the absence of accelerated surfactant adsorption (observed with F68) will be observed with surfactants that form stable surfactant-protein associations. Optical waveguide lightmode spectroscopy was used to test this expectation. Adsorption kinetics were recorded for surfactants (PS 20, PS 80, or F68) and protein (lysozyme or Amgen recombinant protein) at a hydrophilic solid (SiO₂-TiO₂) surface. Experiments were performed in sequential… Advisors/Committee Members: McGuire, Joseph (advisor), McAuley, Arnold (committee member).

Subjects/Keywords: surfactant; Surface active agents

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APA (6^th Edition):

Lee, H. J. (2012). Molecular origins of surfactant-mediated stabilization of protein. (Doctoral Dissertation). Oregon State University. Retrieved from http://hdl.handle.net/1957/33834

Chicago Manual of Style (16^th Edition):

Lee, Hyo Jin. “Molecular origins of surfactant-mediated stabilization of protein.” 2012. Doctoral Dissertation, Oregon State University. Accessed March 01, 2021. http://hdl.handle.net/1957/33834.

MLA Handbook (7^th Edition):

Lee, Hyo Jin. “Molecular origins of surfactant-mediated stabilization of protein.” 2012. Web. 01 Mar 2021.

Vancouver:

Lee HJ. Molecular origins of surfactant-mediated stabilization of protein. [Internet] [Doctoral dissertation]. Oregon State University; 2012. [cited 2021 Mar 01]. Available from: http://hdl.handle.net/1957/33834.

Council of Science Editors:

Lee HJ. Molecular origins of surfactant-mediated stabilization of protein. [Doctoral Dissertation]. Oregon State University; 2012. Available from: http://hdl.handle.net/1957/33834

15. Bleta, Rudina. Systèmes fluorés pour la conception de matériaux poreux : Matrices pour la physisorption de biomolécules : Fluorinated systems for the design of porous material : Matrices for the physisorption of biomolecules.

Degree: Docteur es, Chimie et Physico-Chimie Moléculaires, 2007, Université Henri Poincaré – Nancy I

URL: http://www.theses.fr/2007NAN10111

►

Les propriétés d’auto organisation de tensioactifs ainsi que celles de la chimie de la silice ont permis de préparer des matériaux mésoporeux organisés selon une… (more)

▼

Les propriétés d’auto organisation de tensioactifs ainsi que celles de la chimie de la silice ont permis de préparer des matériaux mésoporeux organisés selon une symétrie hexagonale, cubique ou lamellaire dont la taille des pores varie de 2 à plus de 10 nm. Ils sont depuis quelques années le centre d’intérêt d’universitaires et d’industriels qui développent des recherches fondamentales et appliquées. La compréhension globale des mécanismes de synthèse et la maîtrise des propriétés structurales et texturales des matériaux mésoporeux sont nécessaires pour envisager leur utilisation dans un quelconque procédé industriel. Dans ce cadre, nous avons étudié les relations entre les propriétés physico-chimiques d’un tensioactif fluoré C7F15C2H4(OC2H4)8OH et les caractéristiques des silices mésoporeuses. Malgré l’existence d’une phase micellaire, les canaux poreux des matériaux obtenus avec ces solutions micellaires ne sont pas organisés. En revanche, l’addition de la perfluorodécaline provoque une structuration du matériau selon une symétrie hexagonale. L’utilisation de divers fluorocarbures, ayant des structures moléculaires différentes, montre que le phénomène est associé au déplacement de la courbe de point de trouble vers les hautes températures. De plus, il a été montre que la préparation de matériaux à porosité hiérarchisée à partir d'émulsions de type huile dans eau est corrélée à la température d’inversion de phase du système eau/huile/tensioactif. Enfin, les matériaux mésoporeux ont été mis à profit pour immobiliser des enzymes et les résultats montrent que les lipases physisorbées conservent une activité catalytique.

The self-assembly properties of surfactants and those of silica chemistry have led to the preparation of ordered mesoporous materials with hexagonal, cubic or lamellar symmetry and with pore sizes varying from 2 to more than 10 nm. Recently, they have aroused of great deal of interest to academics and industrialists for the development of fundamental and applied research. However, their use in any industrial process needs a careful consideration of the total comprehension of the synthesis mechanism as well as the control of their structural and textural properties. In this work, the relation between the physicochemical properties of a fluorinated surfactant, C7F15C2H4(OC2H4)8OH, and the characteristics of mesoporous silica was investigated. In spite of the existence of a micellar phase, only wormlike mesoporous materials were obtained. On the other hand, the addition of the perfluorodecalin led to the organisation of the channels according to a hexagonal symmetry. The use of various fluorocarbons of different molecular structures evidenced that this phenomenon is associated to the shift of the cloud point curve towards higher temperatures. Hierarchically porous silica were also prepared from oil-in-water emulsions and their characteristics were correlated to the phase inversion temperature of the surfactant/water/oil system. Finally, the mesoporous materials were used as hosts for the physisorption…

Advisors/Committee Members: Stébé, Marie-José (thesis director), Blin, Jean-Luc (thesis director).

Subjects/Keywords: Surfactant fluoré

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APA (6^th Edition):

Bleta, R. (2007). Systèmes fluorés pour la conception de matériaux poreux : Matrices pour la physisorption de biomolécules : Fluorinated systems for the design of porous material : Matrices for the physisorption of biomolecules. (Doctoral Dissertation). Université Henri Poincaré – Nancy I. Retrieved from http://www.theses.fr/2007NAN10111

Chicago Manual of Style (16^th Edition):

Bleta, Rudina. “Systèmes fluorés pour la conception de matériaux poreux : Matrices pour la physisorption de biomolécules : Fluorinated systems for the design of porous material : Matrices for the physisorption of biomolecules.” 2007. Doctoral Dissertation, Université Henri Poincaré – Nancy I. Accessed March 01, 2021. http://www.theses.fr/2007NAN10111.

MLA Handbook (7^th Edition):

Bleta, Rudina. “Systèmes fluorés pour la conception de matériaux poreux : Matrices pour la physisorption de biomolécules : Fluorinated systems for the design of porous material : Matrices for the physisorption of biomolecules.” 2007. Web. 01 Mar 2021.

Vancouver:

Bleta R. Systèmes fluorés pour la conception de matériaux poreux : Matrices pour la physisorption de biomolécules : Fluorinated systems for the design of porous material : Matrices for the physisorption of biomolecules. [Internet] [Doctoral dissertation]. Université Henri Poincaré – Nancy I; 2007. [cited 2021 Mar 01]. Available from: http://www.theses.fr/2007NAN10111.

Council of Science Editors:

Bleta R. Systèmes fluorés pour la conception de matériaux poreux : Matrices pour la physisorption de biomolécules : Fluorinated systems for the design of porous material : Matrices for the physisorption of biomolecules. [Doctoral Dissertation]. Université Henri Poincaré – Nancy I; 2007. Available from: http://www.theses.fr/2007NAN10111

Université Laval

16. Hamel-Auger, Mélanie. Réponse des macrophages pulmonaires au surfactant pulmonaire oxydé.

Degree: 2017, Université Laval

URL: http://hdl.handle.net/20.500.11794/27837

►

Problématique : Le surfactant pulmonaire est une structure vitale essentielle à l’homéostasie pulmonaire. Étant composé majoritairement de phospholipides, il est particulièrement susceptible à l’oxydation puisqu’il… (more)

▼

Problématique : Le surfactant pulmonaire est une structure vitale essentielle à l’homéostasie pulmonaire. Étant composé majoritairement de phospholipides, il est particulièrement susceptible à l’oxydation puisqu’il est en constante interaction avec l’environnement extérieur. Par des mécanismes encore inconnus, les macrophages pulmonaires jouent un rôle majeur dans l’élimination du surfactant pulmonaire endommagé. Objectifs : 1) Caractériser la réponse transcriptionnelle et fonctionnelle des macrophages au surfactant pulmonaire sain et traité au peroxynitrite (ONOO⁻) et 2) investiguer le rôle de l’endocytose dans l’initiation de cette réponse. Méthodes : Des macrophages murins isolés par lavages bronchoalvéolaires ou différenciés de la moelle osseuse ont été exposés à du surfactant pulmonaire sain ou traité au ONOO⁻, avec ou sans Latrunculine A, un inhibiteur des mécanismes d’endocytose dépendant de l’actine. L’expression de gènes impliqués dans la capture (marco, msr1, cd36), l’accumulation intracellulaire (plin2) et l’export (abca1, abcg1, srb1) lipidique a été évaluée par qPCR, ainsi que les capacités fonctionnelles d’export lipidique. Résultats : L’addition de surfactant pulmonaire sain ou traité au ONOO⁻ augmente l’expression de marco, msr1, cd36 et plin2 et diminue l’expression d’abca1, abcg1 et scarb1 chez les macrophages. Toutefois, certaines différences transcriptionnelles ont été observées entre les macrophages pulmonaires primaires et ceux dérivés de moelle osseuse. Également, qu’il soit sain ou oxydé, le surfactant engendre une diminution des capacités d’efflux de cholestérol des macrophages différenciés. De plus, ces impacts transcriptionnels et fonctionnels ne semblent pas affectés par un traitement à la Latrunculine A. Conclusion : En présence de surfactant, et ce, indépendamment son niveau d’oxydation, les macrophages pulmonaires semblent favoriser les mécanismes de capture et d’accumulation lipidique. Ainsi, aux dépens de ces mécanismes priorisés, les deux espèces présentent conjointement une diminution à la fois transcriptionnelle et fonctionnelle des mécanismes d’export lipidique.

Problematic: Pulmonary surfactant is a vital structure essential to reduce the surface tension at the liquid-air interface. It is mainly composed of phospholipids and is susceptible to oxidation due to its close interaction with the external environment. Pulmonary macrophages play a major role in degrading damaged surfactant. However, the mechanisms used by pulmonary macrophages to detect and initiate its degradation are still unknown. Objectives: 1) To characterize the transcriptional and functional response of macrophages to native and peroxynitrite (ONOO⁻)-treated pulmonary surfactant and 2) to investigate the role of endocytosis in the initiation of this response. Methods: Primary mouse pulmonary macrophages isolated from bronchoalveolar lavages or differentiated from the bone marrow were exposed to native or ONOO⁻-treated pulmonary surfactant with or without endocytosis inhibitors (Latrunculin A). Expression of key…

Advisors/Committee Members: Morissette, Mathieu.

Subjects/Keywords: Macrophages alvéolaires; Surfactant pulmonaire

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APA (6^th Edition):

Hamel-Auger, M. (2017). Réponse des macrophages pulmonaires au surfactant pulmonaire oxydé. (Thesis). Université Laval. Retrieved from http://hdl.handle.net/20.500.11794/27837

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Hamel-Auger, Mélanie. “Réponse des macrophages pulmonaires au surfactant pulmonaire oxydé.” 2017. Thesis, Université Laval. Accessed March 01, 2021. http://hdl.handle.net/20.500.11794/27837.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Hamel-Auger, Mélanie. “Réponse des macrophages pulmonaires au surfactant pulmonaire oxydé.” 2017. Web. 01 Mar 2021.

Vancouver:

Hamel-Auger M. Réponse des macrophages pulmonaires au surfactant pulmonaire oxydé. [Internet] [Thesis]. Université Laval; 2017. [cited 2021 Mar 01]. Available from: http://hdl.handle.net/20.500.11794/27837.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Hamel-Auger M. Réponse des macrophages pulmonaires au surfactant pulmonaire oxydé. [Thesis]. Université Laval; 2017. Available from: http://hdl.handle.net/20.500.11794/27837

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Houston

17. -3223-4739. Extra–Heavy Oil Recovery by Single–Phase Microemulsion Flooding.

Degree: MS, Petroleum Engineering, 2017, University of Houston

URL: http://hdl.handle.net/10657/4830

► Heavy oil and tar deposits are found in abundance in numerous locations around the world. Current thermal methods are controversial due to their potentially adverse… (more)

Subjects/Keywords: Surfactant flood; Enhanced oil recovery

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APA (6^th Edition):

-3223-4739. (2017). Extra–Heavy Oil Recovery by Single–Phase Microemulsion Flooding. (Masters Thesis). University of Houston. Retrieved from http://hdl.handle.net/10657/4830

Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete

Chicago Manual of Style (16^th Edition):

-3223-4739. “Extra–Heavy Oil Recovery by Single–Phase Microemulsion Flooding.” 2017. Masters Thesis, University of Houston. Accessed March 01, 2021. http://hdl.handle.net/10657/4830.

Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete

MLA Handbook (7^th Edition):

-3223-4739. “Extra–Heavy Oil Recovery by Single–Phase Microemulsion Flooding.” 2017. Web. 01 Mar 2021.

Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete

Vancouver:

-3223-4739. Extra–Heavy Oil Recovery by Single–Phase Microemulsion Flooding. [Internet] [Masters thesis]. University of Houston; 2017. [cited 2021 Mar 01]. Available from: http://hdl.handle.net/10657/4830.

Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete

Council of Science Editors:

-3223-4739. Extra–Heavy Oil Recovery by Single–Phase Microemulsion Flooding. [Masters Thesis]. University of Houston; 2017. Available from: http://hdl.handle.net/10657/4830

Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete

18. Huang, Weicong. Drag Reduction in Pipeline by Polymer-Surfactant and Polymer-Polymer Mixtures.

Degree: 2015, University of Waterloo

URL: http://hdl.handle.net/10012/9853

► Extensive researches have been conducted to investigate into the drag reduction behavior of the polymer-surfactant mixture and the polymer-polymer mixture. The drag reduction effect of… (more)

Subjects/Keywords: Drag reduction polymer surfactant mixture

12 more images…

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APA (6^th Edition):

Huang, W. (2015). Drag Reduction in Pipeline by Polymer-Surfactant and Polymer-Polymer Mixtures. (Thesis). University of Waterloo. Retrieved from http://hdl.handle.net/10012/9853

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Huang, Weicong. “Drag Reduction in Pipeline by Polymer-Surfactant and Polymer-Polymer Mixtures.” 2015. Thesis, University of Waterloo. Accessed March 01, 2021. http://hdl.handle.net/10012/9853.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Huang, Weicong. “Drag Reduction in Pipeline by Polymer-Surfactant and Polymer-Polymer Mixtures.” 2015. Web. 01 Mar 2021.

Vancouver:

Huang W. Drag Reduction in Pipeline by Polymer-Surfactant and Polymer-Polymer Mixtures. [Internet] [Thesis]. University of Waterloo; 2015. [cited 2021 Mar 01]. Available from: http://hdl.handle.net/10012/9853.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Huang W. Drag Reduction in Pipeline by Polymer-Surfactant and Polymer-Polymer Mixtures. [Thesis]. University of Waterloo; 2015. Available from: http://hdl.handle.net/10012/9853

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Penn State University

19. Abboud, Hafsa Abubaker. Experimental Studies on the Phase Behavior of an Alcohol-Surfactant Mixture at Varying Conditions of Temperature, Water to Oil Ratio, Cosolvent and Pressure.

Degree: 2020, Penn State University

URL: https://submit-etda.libraries.psu.edu/catalog/17976haa146

► Surfactant flooding is a chemical enhanced oil recovery technique which has shown promise as an EOR method for the recovery of oil from maturing oil… (more)

▼ Surfactant flooding is a chemical enhanced oil recovery technique which has shown promise as an EOR method for the recovery of oil from maturing oil fields. It involves the injection of the surfactant mixture (surfactant and co-surfactant or solvent) into the reservoir to reduce the interfacial tension between the oil and water by creating a third phase (microemulsion) that contains equal amounts of oil and water. This reduction in the interfacial tension will allow for the production of the immobile oil that was previously trapped in the reservoir pores. For a successful surfactant EOR operation, the optimum surfactant formulation is necessary. In order to obtain the correct formulation for the selected reservoir a proper understanding of the effect of the different parameters on the phase behavior is needed. This includes considering the effects of salinity, high temperatures, high pressures and the equivalent alkane carbon number (EACN) among other considerations. While a significant number of studies have been done on surfactants in the past, very few papers have been published dealing with the combined effects of pressure and temperature on the multiphase microemulsion system. In this study we performed an extensive array of surfactant experiments at varying conditions of temperature, salinity, concentration, water-oil ratio (WOR), pressure and EACN for the same surfactant, therefore providing a comprehensive set of experimental results on the effect of the varying parameters on the phase behavior and solubilities using the selected surfactant. The effects of both alcohol and salt partitioning between the phases was investigated, empirical relations were developed to model the partitioning coefficients and the results were included in the interpretation of the surfactant microemulsion phase behavior. The results indicated that both alcohol and salt partitioning can affect the phase behavior and excluding either one can result in inaccurate interpretation of the phase behavior results. High pressure experiments were conducted on the same surfactant system at differing compositions to study the effect of pressure on the phase behavior, which showed that pressure can have a significant effect on the changes on phase behavior, shifting it from three phases to two phases and vice-versa. The changes in phase type and the location of the phase boundaries have been shown to depend on several factors which include temperature, the range of the three-phase window and how far the selected composition point is from the phase boundary. The results of these experiments were used to capture the main parameters of the HLD-NAC EoS that is used in the simulation model for surfactant calculations. The model results after tuning the parameters show good agreement when compared to the examined experimental data. Advisors/Committee Members: Russell Taylor Johns, Dissertation Advisor/Co-Advisor, Russell Taylor Johns, Committee Chair/Co-Chair, Gregory R King, Committee Member, Eugene C Morgan, Committee Member, Andrew Leonard Belmonte, Outside Member, Mort D Webster, Program Head/Chair.

Subjects/Keywords: EOR; Surfactant; Microemulsion; Pressure; WOR

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APA (6^th Edition):

Abboud, H. A. (2020). Experimental Studies on the Phase Behavior of an Alcohol-Surfactant Mixture at Varying Conditions of Temperature, Water to Oil Ratio, Cosolvent and Pressure. (Thesis). Penn State University. Retrieved from https://submit-etda.libraries.psu.edu/catalog/17976haa146

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Abboud, Hafsa Abubaker. “Experimental Studies on the Phase Behavior of an Alcohol-Surfactant Mixture at Varying Conditions of Temperature, Water to Oil Ratio, Cosolvent and Pressure.” 2020. Thesis, Penn State University. Accessed March 01, 2021. https://submit-etda.libraries.psu.edu/catalog/17976haa146.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Abboud, Hafsa Abubaker. “Experimental Studies on the Phase Behavior of an Alcohol-Surfactant Mixture at Varying Conditions of Temperature, Water to Oil Ratio, Cosolvent and Pressure.” 2020. Web. 01 Mar 2021.

Vancouver:

Abboud HA. Experimental Studies on the Phase Behavior of an Alcohol-Surfactant Mixture at Varying Conditions of Temperature, Water to Oil Ratio, Cosolvent and Pressure. [Internet] [Thesis]. Penn State University; 2020. [cited 2021 Mar 01]. Available from: https://submit-etda.libraries.psu.edu/catalog/17976haa146.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Abboud HA. Experimental Studies on the Phase Behavior of an Alcohol-Surfactant Mixture at Varying Conditions of Temperature, Water to Oil Ratio, Cosolvent and Pressure. [Thesis]. Penn State University; 2020. Available from: https://submit-etda.libraries.psu.edu/catalog/17976haa146

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Minnesota

20. Mysona, Joshua. Dynamical Behavior Of Micellar Surfactant Solutions.

Degree: PhD, Chemical Engineering, 2020, University of Minnesota

URL: http://hdl.handle.net/11299/215057

► Surfactants in solution often self-assemble into spherical micelles. Micellar surfactant solutions display a wide range of dynamic processes. The mechanisms of some such processes remain… (more)

▼ Surfactants in solution often self-assemble into spherical micelles. Micellar surfactant solutions display a wide range of dynamic processes. The mechanisms of some such processes remain poorly understood. Three distinct dynamic pro- cesses are studied in this work: single molecule exchange, creation and destruc- tion of micelles, and adsorption of surfactant from a micellar solution onto an initially bare interface. Exchange of individual molecules between a micelle and the surrounding solutions is the most important elementary dynamical process in a micellar so- lution. A combination of molecular dynamics simulation and self consistent field calculations is used to study this process for micelles of diblock copolymer surfactants in both small molecule and polymeric solvents. For micelles in a polymeric solvent considered here, it is found that the corona does not pose a significant barrier to insertion. Studies of micelles of copolymer with a long corona block in a small molecule solvent instead show a measurable insertion barrier due to coronal stretching. Overall rates of insertion are found to depend very weakly on corona block length, however, because of compensating effects of the changes in the concentration of free molecules that coexist with micelles and changes in the barrier to insertion. Studies of relaxation of homogeneous micellar solutions after a weak pertur- bation show the existence of fast and slow processes with disparate relaxation times. The fast process is a relaxation in aggregation number via insertion and expulsion of individual molecules. The slow process is associated with creation and destruction of entire micelles. Novel simulation techniques are used here to determine the mechanism of the slow process. In systems of more soluble surfactants, micelles are created and destroyed by a sequence of single-molecule insertion or expulsion events. In systems of more sparingly soluble surfactants, the number of micelles changes by fission and fusion events. When a micellar solution is exposed to an initially bare interface the re- sulting relaxation is highly nonlinear and may exhibit several distinct behavior regimes. This process is studied by developing approximate models for particu- lar time and parameter regimes and comparing the resulting predictions to the results of full numerical solutions for the relevant diffusion reaction equations for a polydisperse solution. Micelle dissociation is found to be rapid near the inter- face during the early phases of adsorption, even in systems in which micelles are very long-lived in equilibrium, because a depletion of local free molecule concen- tration near the interface removes the barrier to stepwise micelle dissociation. Dissociation of micelles near the interface can lead to formation of a micelle free region near the interface.

Subjects/Keywords: Polymeric Micelles; Surfactant Transport

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APA (6^th Edition):

Mysona, J. (2020). Dynamical Behavior Of Micellar Surfactant Solutions. (Doctoral Dissertation). University of Minnesota. Retrieved from http://hdl.handle.net/11299/215057

Chicago Manual of Style (16^th Edition):

Mysona, Joshua. “Dynamical Behavior Of Micellar Surfactant Solutions.” 2020. Doctoral Dissertation, University of Minnesota. Accessed March 01, 2021. http://hdl.handle.net/11299/215057.

MLA Handbook (7^th Edition):

Mysona, Joshua. “Dynamical Behavior Of Micellar Surfactant Solutions.” 2020. Web. 01 Mar 2021.

Vancouver:

Mysona J. Dynamical Behavior Of Micellar Surfactant Solutions. [Internet] [Doctoral dissertation]. University of Minnesota; 2020. [cited 2021 Mar 01]. Available from: http://hdl.handle.net/11299/215057.

Council of Science Editors:

Mysona J. Dynamical Behavior Of Micellar Surfactant Solutions. [Doctoral Dissertation]. University of Minnesota; 2020. Available from: http://hdl.handle.net/11299/215057

21. Zhong, Xun. Surfactant-Nanoparticle Augmented Systems For Enhanced Oil Recovery: Formula Development And Evaluation.

Degree: PhD, Petroleum Engineering, 2020, University of North Dakota

URL: https://commons.und.edu/theses/3133

► Surfactant enhanced oil recovery (EOR) technology has received much attraction due to its excellent capability to increase the displacement efficiency by altering the wettability,… (more)

▼ Surfactant enhanced oil recovery (EOR) technology has received much attraction due to its excellent capability to increase the displacement efficiency by altering the wettability, lowering the oil-water interfacial tension and mobilizing the remaining oil. However, surfactant systems are widely acknowledged to have either low or high adsorption on solid (rock/clay/sediment) surfaces. The adsorption density can be affected by adsorbents, surfactant structure, experimental conditions and some other factors. Also, the driving forces for adsorption vary with different surfactants types. Generally speaking, electrostatic interactions are more prominent for anionic, cationic and zwitterionic surfactants, while chemical interactions are more common for nonionic surfactants. Proper surfactant adsorption on mineral surfaces can modify interfacial properties and enhance oil recovery while excessive adsorption might result in high cost and limited effectiveness. Economic concerns about chemical flooding should be taken as opportunities to develop new cost-effective formulas that lead to high recoveries. According to the published studies, nanomaterials are good candidates for sacrificial agents or surfactant carriers, meanwhile, some positive synergistic effects produced by mixing surfactants with nanoparticles are favorable for additional oil production. The EOR performance of different nanomaterials together with their limitations were systematically reviewed in Chapter III. Nonionic surfactants, which occupy over 40.0 % of the global surfactant production, are nonvolatile and benign chemicals widely used in the oil and gas industry. However, their high adsorption loss especially at high temperature and high salinity conditions would limit their large-scale applications. Surfactant MERPOL HCS is a commercial product with cloud point higher than 100 ℃. By integrating hydrophilic silica nanoparticles with surfactant MERPOL HCS, surfactant adsorption was reduced and oil production rate was generally increased. More than 34.0 % OOIP and over 4.0 % OOIP additional oil was recovered compared with 2000 mg/L KCl imbibition and pure surfactant imbibition, respectively. In addition, particles with smaller size turned out to be more effective surfactant carriers and better performance enhancers. However, due to the stability issues of nanoparticles and surfactant, the developed nonionic surfactant-hydrophilic silica nanoparticle augmented system was more suitable for low salinity conditions and the details were shown in Chapter IV. In order to extend the applications of surfactant-nanoparticle systems to higher salinity conditions, improvements are required. First, the selected surfactant should have higher resistance towards high salinity and elevated temperature. Second, the steric stability of pure nanoparticles should be improved because in normal cases, using surfactant alone as a nanoparticle stabilizer is not enough to overcome the adverse impacts of salts especially… Advisors/Committee Members: Hui Pu.

Subjects/Keywords: enhanced oil recovery; nanoparticle; surfactant

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APA (6^th Edition):

Zhong, X. (2020). Surfactant-Nanoparticle Augmented Systems For Enhanced Oil Recovery: Formula Development And Evaluation. (Doctoral Dissertation). University of North Dakota. Retrieved from https://commons.und.edu/theses/3133

Chicago Manual of Style (16^th Edition):

Zhong, Xun. “Surfactant-Nanoparticle Augmented Systems For Enhanced Oil Recovery: Formula Development And Evaluation.” 2020. Doctoral Dissertation, University of North Dakota. Accessed March 01, 2021. https://commons.und.edu/theses/3133.

MLA Handbook (7^th Edition):

Zhong, Xun. “Surfactant-Nanoparticle Augmented Systems For Enhanced Oil Recovery: Formula Development And Evaluation.” 2020. Web. 01 Mar 2021.

Vancouver:

Zhong X. Surfactant-Nanoparticle Augmented Systems For Enhanced Oil Recovery: Formula Development And Evaluation. [Internet] [Doctoral dissertation]. University of North Dakota; 2020. [cited 2021 Mar 01]. Available from: https://commons.und.edu/theses/3133.

Council of Science Editors:

Zhong X. Surfactant-Nanoparticle Augmented Systems For Enhanced Oil Recovery: Formula Development And Evaluation. [Doctoral Dissertation]. University of North Dakota; 2020. Available from: https://commons.und.edu/theses/3133

University of Texas – Austin

22. -7223-3143. Characterization of an alkyl diamine surfactant for gas mobility control in gas enhanced oil recovery and conformance control.

Degree: MSin Engineering, Petroleum engineering, 2016, University of Texas – Austin

URL: http://hdl.handle.net/2152/39423

► The objective of this research is to characterize the properties and performance of an amine-based “switchable” surfactant, Duomeen TTM, at various environmental conditions. In particular,… (more)

▼ The objective of this research is to characterize the properties and performance of an amine-based “switchable” surfactant, Duomeen TTM, at various environmental conditions. In particular, bulk characterization measurements namely, aqueous stability, solubility, partition, and rheological behavior were tested and applied in core flooding experiments using carbonate rock saturated in very saline brine. Aqueous stability provides insight about how Duomeen TTM solutions tolerate with changes in salt concentration, pH, and temperature. This surfactant becomes more hydrophilic as pH decreases and transforms into a viscoelastic solution at moderate to high salt concentrations. This viscoelasticity is intensified by changes in pH, temperature, and surfactant concentration of the solution, where surfactant concentration limits the aggregation density of the solution, pH influences the protonation process in the head group, and temperature controls the minimization of free energy by breaking, reformation, and branching of micellar networks. Furthermore, solubility measurements were conducted for a series of pressures and temperatures in pure CO2 as well as in gas mixtures composed of CO2 and CH4. It is shown that Duomeen TTM is very soluble in CO2, but becomes less soluble when methane is present in the system. Partition experiments amongst brine and CO2 reveal Duomeen TTM is very water soluble at low pH, in agreement with the aqueous stability results. Finally, these bulk characterization results were applied in core flooding experiments where in-situ viscoelasticity or gel development capabilities were tested with surfactant dissolved in solution at different salinities. In-situ viscosification is mainly dependent on the salinity contrast between the injective solution and resident brine as well as the rheological behavior of the surfactant solution at different salinities. This in-situ gel development provides mobility control by blocking thief zones and high permeable regions in porous media. In all, this ability to viscosify in-situ makes Duomeen TTM applicable for near-wellbore conformance control and CO2 mobility control in CO2 enhanced oil recovery. Advisors/Committee Members: Nguyen, Quoc P. (advisor), DiCarlo, David (committee member).

Subjects/Keywords: Surfactant; Solubility; Rheology; Gel treatment

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APA (6^th Edition):

-7223-3143. (2016). Characterization of an alkyl diamine surfactant for gas mobility control in gas enhanced oil recovery and conformance control. (Masters Thesis). University of Texas – Austin. Retrieved from http://hdl.handle.net/2152/39423

Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete

Chicago Manual of Style (16^th Edition):

-7223-3143. “Characterization of an alkyl diamine surfactant for gas mobility control in gas enhanced oil recovery and conformance control.” 2016. Masters Thesis, University of Texas – Austin. Accessed March 01, 2021. http://hdl.handle.net/2152/39423.

Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete

MLA Handbook (7^th Edition):

-7223-3143. “Characterization of an alkyl diamine surfactant for gas mobility control in gas enhanced oil recovery and conformance control.” 2016. Web. 01 Mar 2021.

Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete

Vancouver:

-7223-3143. Characterization of an alkyl diamine surfactant for gas mobility control in gas enhanced oil recovery and conformance control. [Internet] [Masters thesis]. University of Texas – Austin; 2016. [cited 2021 Mar 01]. Available from: http://hdl.handle.net/2152/39423.

Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete

Council of Science Editors:

-7223-3143. Characterization of an alkyl diamine surfactant for gas mobility control in gas enhanced oil recovery and conformance control. [Masters Thesis]. University of Texas – Austin; 2016. Available from: http://hdl.handle.net/2152/39423

Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete

University of Texas – Austin

23. Chen, Yunshen. Surfactant stabilization of CO₂-in-water foams at high temperatures.

Degree: PhD, Chemical Engineering, 2014, University of Texas – Austin

URL: http://hdl.handle.net/2152/26147

► The interfacial properties of a surfactant in a CO₂-aqueous system at a temperature above 100 °C, and how they influence foams are essentially unknown. A… (more)

▼ The interfacial properties of a surfactant in a CO₂-aqueous system at a temperature above 100 °C, and how they influence foams are essentially unknown. A cationic surfactant, C₁₂₋₁₄N(EO)₂ in the protonated state below pH 5.5, was demonstrated to be soluble in an aqueous phase with up to 22% total dissolved salt (TDS) at 120 °C. Moreover, the strong solvation in brine (high cloud point) and simultaneous affinity for CO₂ led to significant adsorption of the surfactant at the CO₂-water interface. Given that the surfactant favored the brine phase over the CO₂ phase, the preferred curvature was a CO₂-in-water (C/W) macroemulsion (foam). The surfactant stabilized foam in the presence of crushed calcium carbonate at ~ pH 4 upon suppressing the dissolution of calcium carbonate upon addition of Ca²⁺ and Mg²⁺ according to the common ion effect. Cationic alkyltrimethylammonium surfactants with an alkyl tail of average carbon number less than 15 were soluble in 22% TDS brine up to 120 °C. The head group was properly balanced with a C₁₂₋₁₄ hydrocarbon tail for a sufficiently dense surfactant layer at the CO₂-water interface to reduce the interfacial tension. For C₁₂₋₁₄N(CH₃)₃Cl the solubility in brine and the surfactant adsorption were sufficient to stabilize C/W foam at 120 °C in both a crushed calcium carbonate packed bed (76 Darcy) and a capillary tube at the downstream of the bed. The stability of the foam at high temperature may be attributed to the high surfactant adsorption at the interface. The use of nonionic surfactants as a foam stabilizer is usually limited by their poor aqueous solubility at elevated temperatures, particularly at high salinity. A nonionic surfactant C₁₂₋₁₄(EO)₂₂ with high degree of ethoxylation gave higher salt tolerance at elevated temperature. The surfactant stabilize C/W foam at 80 °C in the presence of 90 g/L NaCl brine in a 30 Darcy sand pack, which has not yet been reported by a nonionic surfactant. Both the formation of strong foam in the porous media and the low of oil-brine partition coefficient suggest C₁₂₋₁₄(EO)₂₂ is a potential candidate for a CO₂ EOR field trial. Advisors/Committee Members: Johnston, Keith P., 1955- (advisor).

Subjects/Keywords: Surfactant; CO₂; Foam; High temperature

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APA (6^th Edition):

Chen, Y. (2014). Surfactant stabilization of CO₂-in-water foams at high temperatures. (Doctoral Dissertation). University of Texas – Austin. Retrieved from http://hdl.handle.net/2152/26147

Chicago Manual of Style (16^th Edition):

Chen, Yunshen. “Surfactant stabilization of CO₂-in-water foams at high temperatures.” 2014. Doctoral Dissertation, University of Texas – Austin. Accessed March 01, 2021. http://hdl.handle.net/2152/26147.

MLA Handbook (7^th Edition):

Chen, Yunshen. “Surfactant stabilization of CO₂-in-water foams at high temperatures.” 2014. Web. 01 Mar 2021.

Vancouver:

Chen Y. Surfactant stabilization of CO₂-in-water foams at high temperatures. [Internet] [Doctoral dissertation]. University of Texas – Austin; 2014. [cited 2021 Mar 01]. Available from: http://hdl.handle.net/2152/26147.

Council of Science Editors:

Chen Y. Surfactant stabilization of CO₂-in-water foams at high temperatures. [Doctoral Dissertation]. University of Texas – Austin; 2014. Available from: http://hdl.handle.net/2152/26147

University of New South Wales

24. Wei, Zengyi. Interfacial structures of polymeric surfactants in an emulsion formulation.

Degree: Chemical Engineering, 2019, University of New South Wales

URL: http://handle.unsw.edu.au/1959.4/62974 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:59469/SOURCE02?view=true

► As emulsions are thermodynamically unstable, stabilizers are added to prevent creaming and coalescence, and can greatly improve the customer appeal and shelf life of formulated… (more)

▼ As emulsions are thermodynamically unstable, stabilizers are added to prevent creaming and coalescence, and can greatly improve the customer appeal and shelf life of formulated products. Investigations of the structures of surfactants and polymers are key to understanding how they meditate the properties of the oil/water interface. Studying molecules at the oil/water interface is challenging, and only a handful of techniques are suitable for detailed structural studies of molecules at the oil/water interface. In this thesis, an easy-to-use sample environment suitable for oil/water interfacial characterization is described. End attached polydimethylsiloxane (PDMS) films mimic silicone layers in a way that permits the amounts and molecular structures of materials at the interface to be measured. Molecular conformations at the oil/water interface are seen to differ from those at the air/water and solid/liquid interfaces. Penetration of surfactant tails into the oil phase was observed. Addition of small hydrocarbon surfactants and salts was seen to affect polymeric surfactants. Displacement of the polymeric surfactants from the PDMS surface, producing poorly stabilized interfaces, was observed; co-adsorption behavior was also measured. The efficiency of steric stabilization could also be tuned by the addition of salts. A reduction in polymer adsorption and a thinner steric barrier were seen when salts were added as co-solutes. The effect was salt-identity specific. Adsorbed polymeric structures were also probed using neutron reflection in a sample environment that creates a confined geometry at the oil/water interface. Multilayer structures were formed under confinement and the polymeric surfactants were seen to be repelled from the hydrophobic surface. These are the first experiments on confinement at liquid/liquid interfaces ever attempted. Interfacial structures were seen to be highly dependent on the phases that were used, with these data from the PDMS/water interface indicating that it is difficult to draw direct conclusions from measurements at the air/water or solid/liquid interface. The PDMS brush layer is seen to be an excellent model oil surface and enables detailed structural studies of polymers and surfactants at the PDMS/water interface. Advisors/Committee Members: Prescott, Stuart, Chemical Engineering, Faculty of Engineering, UNSW.

Subjects/Keywords: Structure; Emulsion; Interface; Surfactant

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APA (6^th Edition):

Wei, Z. (2019). Interfacial structures of polymeric surfactants in an emulsion formulation. (Doctoral Dissertation). University of New South Wales. Retrieved from http://handle.unsw.edu.au/1959.4/62974 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:59469/SOURCE02?view=true

Chicago Manual of Style (16^th Edition):

Wei, Zengyi. “Interfacial structures of polymeric surfactants in an emulsion formulation.” 2019. Doctoral Dissertation, University of New South Wales. Accessed March 01, 2021. http://handle.unsw.edu.au/1959.4/62974 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:59469/SOURCE02?view=true.

MLA Handbook (7^th Edition):

Wei, Zengyi. “Interfacial structures of polymeric surfactants in an emulsion formulation.” 2019. Web. 01 Mar 2021.

Vancouver:

Wei Z. Interfacial structures of polymeric surfactants in an emulsion formulation. [Internet] [Doctoral dissertation]. University of New South Wales; 2019. [cited 2021 Mar 01]. Available from: http://handle.unsw.edu.au/1959.4/62974 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:59469/SOURCE02?view=true.

Council of Science Editors:

Wei Z. Interfacial structures of polymeric surfactants in an emulsion formulation. [Doctoral Dissertation]. University of New South Wales; 2019. Available from: http://handle.unsw.edu.au/1959.4/62974 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:59469/SOURCE02?view=true

University of Oklahoma

25. Chen, Changlong. CARBONACEOUS NANOSIZED SURFACTANT CARRIERS AND OIL-INDUCED VISCOELASTIC FLUID FOR POTENTIAL EOR APPLICATIONS.

Degree: PhD, 2018, University of Oklahoma

URL: http://hdl.handle.net/11244/299946

► This dissertation aims to advance the conventional tertiary oil recovery method, surfactant flooding process. Via injecting a finite slug of surfactant-only or mixture of surfactant/polymer… (more)

▼ This dissertation aims to advance the conventional tertiary oil recovery method, surfactant flooding process. Via injecting a finite slug of surfactant-only or mixture of surfactant/polymer solution into reservoir, surfactants are capable to dramatically reduce the residual oil/water interfacial tension (IFT) thus mobilize trapped oil. Despite the technical viability of surfactant flooding, this approach has some difficulties to be realized at large field scale, such as substantial adsorption loss, and unfavorable sweep efficiency of surfactant-only slug. This dissertation examined the feasibility of using carbonaceous nanoparticles, multiwalled carbon nanotube (MWNT), and carbon black as potential surfactant carriers in enhanced oil recovery. Stability of MWNT dispersion at high temperature high salinity levels, typical encountered in reservoir, as well as transport and fate of these stable nano-fluids in porous medium were first examined as a prerequisite for any field applications. MWNTs exhibited exceptional stability in 10 wt% brine by dispersing them with nonionic surfactant such as alkylphenol polyethoxylates with a large number of ethylene oxide (EO) groups. In the sandpack column test, a binary surfactant formulation, which consisted of a nonionic surfactant and an anionic surfactant in the proper ratios, exhibited an excellent capability to propagate MWNT, with 96% of the injected nanotubes recovered in the effluent. Chapter 2 presents the details of MWNT stability and transport in porous medium, which was previously published on Energy & Fuels. A successful surfactant delivery agent requires that surfactant ought to be released from the carriers once contact the target oil. In Chapter 3, batch adsorption tests indicated that competitive adsorption of surfactant on nanoparticles was beneficial to decrease adsorptive loss on Ottawa sand at equilibrium concentration below critical micelle concentration; microemulsions phase behavior proved spontaneous release of loaded surfactants from the treated MWNTs surfaces to oil/water interface; sand pack column tests carried out for an optimum surfactant formulation affirmed the advantage of adding nanoparticles into surfactant slug, as injection of MWNT-surfactant blend achieved faster and higher tertiary recovery than surfactant-only formulation. Chapter 3 was previously published on Fuel. An episode in the research of stable carbonaceous nanoparticles dispersion, reversed binary micellar interactions between anionic surfactant alpha olefin sulfonate (AOS) and nonionic surfactant nonylphenol polyethylene glycol ether (NPEs) were observed depending on the addition of electrolytes. In the absence of additional electrolytes, NPEs exhibited substantially higher activity in micelles than bulk solution; with growth of EO groups, shrinkage on the scale of synergistic interaction was evidenced. In contrary, with swamping amount of electrolytes, synergistic interactions enlarged with the rise of EO groups, and AOS activity in mixed micelles was found depending on both… Advisors/Committee Members: Shiau, Bor-Jier (advisor), Harwell, Jeffrey (committee member), Jamili, Ahmad (committee member), Moghanloo, Rouzbeh (committee member), Wu, Xingru (committee member).

Subjects/Keywords: Surfactant; EOR; Nanoparticles; Viscoelastic

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Chen, C. (2018). CARBONACEOUS NANOSIZED SURFACTANT CARRIERS AND OIL-INDUCED VISCOELASTIC FLUID FOR POTENTIAL EOR APPLICATIONS. (Doctoral Dissertation). University of Oklahoma. Retrieved from http://hdl.handle.net/11244/299946

Chicago Manual of Style (16^th Edition):

Chen, Changlong. “CARBONACEOUS NANOSIZED SURFACTANT CARRIERS AND OIL-INDUCED VISCOELASTIC FLUID FOR POTENTIAL EOR APPLICATIONS.” 2018. Doctoral Dissertation, University of Oklahoma. Accessed March 01, 2021. http://hdl.handle.net/11244/299946.

MLA Handbook (7^th Edition):

Chen, Changlong. “CARBONACEOUS NANOSIZED SURFACTANT CARRIERS AND OIL-INDUCED VISCOELASTIC FLUID FOR POTENTIAL EOR APPLICATIONS.” 2018. Web. 01 Mar 2021.

Vancouver:

Chen C. CARBONACEOUS NANOSIZED SURFACTANT CARRIERS AND OIL-INDUCED VISCOELASTIC FLUID FOR POTENTIAL EOR APPLICATIONS. [Internet] [Doctoral dissertation]. University of Oklahoma; 2018. [cited 2021 Mar 01]. Available from: http://hdl.handle.net/11244/299946.

Council of Science Editors:

Chen C. CARBONACEOUS NANOSIZED SURFACTANT CARRIERS AND OIL-INDUCED VISCOELASTIC FLUID FOR POTENTIAL EOR APPLICATIONS. [Doctoral Dissertation]. University of Oklahoma; 2018. Available from: http://hdl.handle.net/11244/299946

University of Oklahoma

26. Wang, Shengbo. CHARACTERIZATION OF SURFACTANTS AND TRACER PROPERTIES FOR POTENTIAL EOR APPLICATIONS.

Degree: PhD, 2017, University of Oklahoma

URL: http://hdl.handle.net/11244/51873

► There are some challenges in chemical flooding, such as, gas finger problem usually occurred in field tests, potential scale problems of chemical slug caused by… (more)

▼ There are some challenges in chemical flooding, such as, gas finger problem usually occurred in field tests, potential scale problems of chemical slug caused by precipitation due to incompatibility between chemical solution and formation brine, and drawbacks of experimental designing of chemical flooding. In this work, three challenges are mainly discussed in following chapters. Chapter one focuses on optimization of designing single well test; chapter two discusses the feasibility of foam stabilized by nanoparticles in porous media; chapter three states that coacervates problems are occurred in preparation of chemical solutions. The summary of three topics is addressed below. The first chapter, the single well chemical tracer test (SWCTT) has emerged in the past decades as a method for measuring oil saturation prior to and/or after EOR operations, to measure the recovery performance in-situ. To use this technology, the partition coefficients of the selected tracers are essential for estimating the level of residual oil at the targeted single well. Commonly, injection of short chain alcohols and ethyl acetate, a reactive tracer, is carried out for the tracer slug, mainly based on site-specific reservoir conditions, to accurately determine the level of oil saturation in-situ. However, injection of ethyl formate has been less common due to its fast hydrolysis rate under elevated temperature, which increases the challenges in data interpretation. Therefore, a systematic study for using ethyl formate under mid-range temperature (<60°C); -as commonly found in mature oil field in the U.S., show the potential to be applied for SWCTT. As part of the design effort for a series of EOR field tests to manage the project risk, we particularly assessed the relationships between the partition coefficients of reactive tracers and subsurface conditions; -such as salinity, temperatures, type of electrolytes and the equivalent alkane carbon number (EACN) of the crude oil experiments were performed under various reservoir conditions as a function of actual site characteristics at the targeted high saline formations. In brief, our data clearly show that the (oil/water) partition coefficient of ethyl formate increase steadily with increasing NaCl concentrations, ranging from 10,000mg/L (0.17M) to 250,000mg/L (4.28M). A similar upward trend was observed for increasing temperature between 25°C to 52°C; however, the partition coefficient decrease inversely with increasing the crude oil EACN over the range from 8 to 12, which are common for domestic oil samples. It was also showed that brine with high NaCl concentration yielded higher partition coefficients. In contrast, brine with high CaCl2 and BaCl2 concentration yielded lower values. And MgCl2 performed somewhat unusual trend in our tests. These results further indicate that the partition coefficient of the reactive tracer, ethyl formate, is sensitive to change in salinity, temperatures, type of electrolytes and EACN, as observed for other chemical tracers. In addition, based… Advisors/Committee Members: Shiau, Bor-Jier (advisor), Harwell, Jeffery (committee member), Jamili, Ahmad (committee member), Wu, Xingru (committee member), Pournik, Maysam (committee member).

Subjects/Keywords: petroleum; foam flooding; surfactant coacervation

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Wang, S. (2017). CHARACTERIZATION OF SURFACTANTS AND TRACER PROPERTIES FOR POTENTIAL EOR APPLICATIONS. (Doctoral Dissertation). University of Oklahoma. Retrieved from http://hdl.handle.net/11244/51873

Chicago Manual of Style (16^th Edition):

Wang, Shengbo. “CHARACTERIZATION OF SURFACTANTS AND TRACER PROPERTIES FOR POTENTIAL EOR APPLICATIONS.” 2017. Doctoral Dissertation, University of Oklahoma. Accessed March 01, 2021. http://hdl.handle.net/11244/51873.

MLA Handbook (7^th Edition):

Wang, Shengbo. “CHARACTERIZATION OF SURFACTANTS AND TRACER PROPERTIES FOR POTENTIAL EOR APPLICATIONS.” 2017. Web. 01 Mar 2021.

Vancouver:

Wang S. CHARACTERIZATION OF SURFACTANTS AND TRACER PROPERTIES FOR POTENTIAL EOR APPLICATIONS. [Internet] [Doctoral dissertation]. University of Oklahoma; 2017. [cited 2021 Mar 01]. Available from: http://hdl.handle.net/11244/51873.

Council of Science Editors:

Wang S. CHARACTERIZATION OF SURFACTANTS AND TRACER PROPERTIES FOR POTENTIAL EOR APPLICATIONS. [Doctoral Dissertation]. University of Oklahoma; 2017. Available from: http://hdl.handle.net/11244/51873

University of Waikato

27. Cecire, Anthony. Investigation of respiratory surfactant A protein in middle ear epithelium .

Degree: 2020, University of Waikato

URL: http://hdl.handle.net/10289/14055

► Introduction: The middle ear of mammals is an air-chamber required for sound transmission. It is lined by an epithelium which is variable but which resembles… (more)

Subjects/Keywords: Surfactant A protein; Middle ear

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Cecire, A. (2020). Investigation of respiratory surfactant A protein in middle ear epithelium . (Doctoral Dissertation). University of Waikato. Retrieved from http://hdl.handle.net/10289/14055

Chicago Manual of Style (16^th Edition):

Cecire, Anthony. “Investigation of respiratory surfactant A protein in middle ear epithelium .” 2020. Doctoral Dissertation, University of Waikato. Accessed March 01, 2021. http://hdl.handle.net/10289/14055.

MLA Handbook (7^th Edition):

Cecire, Anthony. “Investigation of respiratory surfactant A protein in middle ear epithelium .” 2020. Web. 01 Mar 2021.

Vancouver:

Cecire A. Investigation of respiratory surfactant A protein in middle ear epithelium . [Internet] [Doctoral dissertation]. University of Waikato; 2020. [cited 2021 Mar 01]. Available from: http://hdl.handle.net/10289/14055.

Council of Science Editors:

Cecire A. Investigation of respiratory surfactant A protein in middle ear epithelium . [Doctoral Dissertation]. University of Waikato; 2020. Available from: http://hdl.handle.net/10289/14055

Dalhousie University

28. Jackson, Douglas. MODELING THE INFLUENCE OF SURFACTANT ARCHITECTURE ON THE CRITICAL MICELLE CONCENTRATION OF DOUBLE-HEADED AND GEMINI SURFACTANTS.

Degree: MS, Department of Chemistry, 2010, Dalhousie University

URL: http://hdl.handle.net/10222/12993

► Monte Carlo simulations have been used in the past to investigate a variety of surfactant systems; however, there is little published literature for double-headed and… (more)

Subjects/Keywords: GEMINI SURFACTANT; DOUBLE-HEADED SURFACTANT; MONTE CARLO SIMULATIONS

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Jackson, D. (2010). MODELING THE INFLUENCE OF SURFACTANT ARCHITECTURE ON THE CRITICAL MICELLE CONCENTRATION OF DOUBLE-HEADED AND GEMINI SURFACTANTS. (Masters Thesis). Dalhousie University. Retrieved from http://hdl.handle.net/10222/12993

Chicago Manual of Style (16^th Edition):

Jackson, Douglas. “MODELING THE INFLUENCE OF SURFACTANT ARCHITECTURE ON THE CRITICAL MICELLE CONCENTRATION OF DOUBLE-HEADED AND GEMINI SURFACTANTS.” 2010. Masters Thesis, Dalhousie University. Accessed March 01, 2021. http://hdl.handle.net/10222/12993.

MLA Handbook (7^th Edition):

Jackson, Douglas. “MODELING THE INFLUENCE OF SURFACTANT ARCHITECTURE ON THE CRITICAL MICELLE CONCENTRATION OF DOUBLE-HEADED AND GEMINI SURFACTANTS.” 2010. Web. 01 Mar 2021.

Vancouver:

Jackson D. MODELING THE INFLUENCE OF SURFACTANT ARCHITECTURE ON THE CRITICAL MICELLE CONCENTRATION OF DOUBLE-HEADED AND GEMINI SURFACTANTS. [Internet] [Masters thesis]. Dalhousie University; 2010. [cited 2021 Mar 01]. Available from: http://hdl.handle.net/10222/12993.

Council of Science Editors:

Jackson D. MODELING THE INFLUENCE OF SURFACTANT ARCHITECTURE ON THE CRITICAL MICELLE CONCENTRATION OF DOUBLE-HEADED AND GEMINI SURFACTANTS. [Masters Thesis]. Dalhousie University; 2010. Available from: http://hdl.handle.net/10222/12993

29. Kumthekar, Kedar Ravindra. Studies in Mixed Surfactant Systems and Vegetable Oil Emulsions; -.

Degree: Chemistry, 2012, INFLIBNET

URL: http://shodhganga.inflibnet.ac.in/handle/10603/9496

►

The present thesis titled Studies in Mixed Surfactant Systems and Vegetable Oil Emulsions brings the natural goodness of unrefined edible and non-edible vegetable oils to… (more)

▼

The present thesis titled Studies in Mixed Surfactant Systems and Vegetable Oil Emulsions brings the natural goodness of unrefined edible and non-edible vegetable oils to the consumer via the emulsification science and technology. Vegetable oil is one of the extensively used natural commodity product used for variety of applications such as, food supplement, cosmetic, pharmaceutical and health care, fuel additives, lubricant and raw material for chemical as well as surfactant industry. In this research work vegetable oils such as almond, safflower, mustard, soyabean were emulsified in oil in water type emulsion and their rheological newlineproperties were investigated revealing pseudoplastic flow behavior. The influence of newlinerheological additive carboxy methyl cellulose-sodium salt on apparent viscosity of low fat almond oil in water emulsion was proposed by developing concentration and newlinetemperature dependent empirical equation. They have shown a better moisturizing newlinepotential and skin compatability. Low fat oil in water emulsions of almond and safflower has shown a better blood cholesterol lowering activity called as hypolepidemic activity. The combination of non-edible oil emulsions such as neem, karanj and castor has shown a better mosquito larvicidal potential against the single oil emulsion. We have developed environmentally benign, greener, milder amine free and highly selective protocol for chlorpyrifos and its ethyl, n-propyl and n-butyl derivatives using HLB attained blend of non-ionic surfactant in organic solvent/water newlinesystem. The novel kinetic model was developed for solid-liquid phase transfer catalyzed (S-L PTC) chlorpyrifos methyl synthesis using benzyl trimethyl ammonium chloride as a single and recyclable catalyst. A promising method for HPLC internal standard purity was developed successfully for monitoring the reaction progress as well as purity of the final product. The proposed kinetic model was validated by performing series of experiments.

References p. 197-209, Synopsis included

Advisors/Committee Members: Nagarkar, Jayashree M.

Subjects/Keywords: Chemistry; Vegetable Oil Emulsions; Mixed Surfactant Systems; Nonionic surfactant

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APA (6^th Edition):

Kumthekar, K. R. (2012). Studies in Mixed Surfactant Systems and Vegetable Oil Emulsions; -. (Thesis). INFLIBNET. Retrieved from http://shodhganga.inflibnet.ac.in/handle/10603/9496

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Kumthekar, Kedar Ravindra. “Studies in Mixed Surfactant Systems and Vegetable Oil Emulsions; -.” 2012. Thesis, INFLIBNET. Accessed March 01, 2021. http://shodhganga.inflibnet.ac.in/handle/10603/9496.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Kumthekar, Kedar Ravindra. “Studies in Mixed Surfactant Systems and Vegetable Oil Emulsions; -.” 2012. Web. 01 Mar 2021.

Vancouver:

Kumthekar KR. Studies in Mixed Surfactant Systems and Vegetable Oil Emulsions; -. [Internet] [Thesis]. INFLIBNET; 2012. [cited 2021 Mar 01]. Available from: http://shodhganga.inflibnet.ac.in/handle/10603/9496.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Kumthekar KR. Studies in Mixed Surfactant Systems and Vegetable Oil Emulsions; -. [Thesis]. INFLIBNET; 2012. Available from: http://shodhganga.inflibnet.ac.in/handle/10603/9496

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Texas – Austin

30. Koparal, Gulcan. Surfactant retention analysis in Berea sandstones.

Degree: MSin Engineering, Petroleum Engineering, 2019, University of Texas – Austin

URL: http://dx.doi.org/10.26153/tsw/5396

► With the diminishing amount of oil has been produced through primary and secondary oil production methods, the need of chemical EOR techniques has become more… (more)

▼ With the diminishing amount of oil has been produced through primary and secondary oil production methods, the need of chemical EOR techniques has become more important. The objective of Chemical EOR is mobilizing the residual oil by using chemicals such as surfactants, polymers, alkalis, co-solvents. The main obstacle with Chemical EOR is the cost efficiency of the chemicals that profoundly depends on the amount of surfactants absorbed onto the rock surface and trapped in the porous medium of the rock matrix. In this research, decreasing the anionic surfactant retention was targeted without using alkalis in the presence/absence of oil. In Berea outcrop sandstones, anionic surfactants were used to reduce the IFT between oil and water, which results in the mobilization of residual oil. High molecular water-soluble polymers were used to mitigate the reservoir heterogeneity and provide the sweep efficiency. Advancements in CEOR have enabled cost effective usage of surfactants and polymers with the consistency of alkalis in both sandstones and carbonate rocks. However, in the existence of gypsum and anhydrite, the usage of alkalies can be even detrimental. Thus, alternative methods are necessary to the robustness of the CEOR processes. In this research, to obtain an ultra-low interfacial tension (IFT) between oil and aqueous phase, chemical formulations were developed with conventional and novel surfactants as combination of internal olefin sulfonate (IOS) co-surfactants and co-solvents. Prior to the corefloods, the performance of the formulations were tested systematically through phase behavior and aqueous stability tests with different combinations of surfactants and co-surfactants with different ratios and with several kinds of co-solvents such as IBA, phenol and TEGBE. Formulations with good phase behaviors were investigated further with corefloods with and without oil. For the experiments with low surfactant retention, the same formulations were tested by adding sodium polyacrylate (NaPA) to decrease the surfactant retention. With the formulations with high solubilization ratio, high residual oil recovery and low surfactant retention were obtained and with a small amount of NaPA, a favorable economic to the surfactant-polymer applications was gained in Berea sandstones at 40°C Advisors/Committee Members: Mohanty, Kishore Kumar (advisor), Pope, Gary A (committee member), Panthi, Krishna K (committee member).

Subjects/Keywords: Chemical EOR; Surfactant-polymer applications; Anionic surfactants; Surfactant retention; Surfactant adsorption; Berea sandstone; Low permeability sandstone

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Koparal, G. (2019). Surfactant retention analysis in Berea sandstones. (Masters Thesis). University of Texas – Austin. Retrieved from http://dx.doi.org/10.26153/tsw/5396

Chicago Manual of Style (16^th Edition):

Koparal, Gulcan. “Surfactant retention analysis in Berea sandstones.” 2019. Masters Thesis, University of Texas – Austin. Accessed March 01, 2021. http://dx.doi.org/10.26153/tsw/5396.

MLA Handbook (7^th Edition):

Koparal, Gulcan. “Surfactant retention analysis in Berea sandstones.” 2019. Web. 01 Mar 2021.

Vancouver:

Koparal G. Surfactant retention analysis in Berea sandstones. [Internet] [Masters thesis]. University of Texas – Austin; 2019. [cited 2021 Mar 01]. Available from: http://dx.doi.org/10.26153/tsw/5396.

Council of Science Editors:

Koparal G. Surfactant retention analysis in Berea sandstones. [Masters Thesis]. University of Texas – Austin; 2019. Available from: http://dx.doi.org/10.26153/tsw/5396

Open Access Theses and Dissertations