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You searched for subject:(Shear SANS). Showing records 1 – 3 of 3 total matches.

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Uppsala University

1. Kawecki, Maciej. Towards In Situ Studies of Polymer Dynamics and Entanglement under Shear through Neutron Spin Echo Spectroscopy.

Degree: Materials Physics, 2015, Uppsala University

Entangled polymeric fluids subjected to shear display a stress plateau through a range of shear rates. The formation of this plateau is often attributed to an entanglement-disentanglement transition in scientific literature. However, to our best knowledge in situ studies recovering the intermediate scattering function of polymer dynamics under shear have until now never been performed. This thesis documents the successful development of a high viscosity shear device whose interaction with polarized neutrons is small enough to allow use for Neutron Spin Echo spectroscopy. Further, first measurements towards the direct observation of the variation of the degree of entanglement throughout increasing shear are documented, albeit yet for too short Fourier times to measure beyond Rouse dynamics.

Subjects/Keywords: Neutron Spin Echo; NSE; Entanglement; Disentanglement; Shear; Polymer Dynamics; Polymer Physics; Cone To Plate; SANS; Neutron Scattering

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

APA (6th Edition):

Kawecki, M. (2015). Towards In Situ Studies of Polymer Dynamics and Entanglement under Shear through Neutron Spin Echo Spectroscopy. (Thesis). Uppsala University. Retrieved from http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-262370

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

Chicago Manual of Style (16th Edition):

Kawecki, Maciej. “Towards In Situ Studies of Polymer Dynamics and Entanglement under Shear through Neutron Spin Echo Spectroscopy.” 2015. Thesis, Uppsala University. Accessed October 22, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-262370.

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

MLA Handbook (7th Edition):

Kawecki, Maciej. “Towards In Situ Studies of Polymer Dynamics and Entanglement under Shear through Neutron Spin Echo Spectroscopy.” 2015. Web. 22 Oct 2019.

Vancouver:

Kawecki M. Towards In Situ Studies of Polymer Dynamics and Entanglement under Shear through Neutron Spin Echo Spectroscopy. [Internet] [Thesis]. Uppsala University; 2015. [cited 2019 Oct 22]. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-262370.

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

Council of Science Editors:

Kawecki M. Towards In Situ Studies of Polymer Dynamics and Entanglement under Shear through Neutron Spin Echo Spectroscopy. [Thesis]. Uppsala University; 2015. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-262370

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


Louisiana State University

2. Loizou, Elena. Shear Responses of Poly(ethylene oxide)-Laponite Nanocomposite Hydrogels.

Degree: PhD, Chemistry, 2007, Louisiana State University

This research seeks to understand the structure and shear responses of poly(ethylene oxide)-Laponite nanocomposite hydrogels and to relate the macroscopic physical properties to the nanoscopic structural changes. Understanding that relationship is necessary, in order to tailor material properties to specific applications. Information on the structure at rest on multiple length scales was obtained by combining microscopic and neutron scattering techniques. The structural changes that occur in response to a shear field were explored using rheology and neutron scattering. These structures were examined as a function of polymer molecular weight, polymer and clay concentrations, and sample preparation method. While the sample preparation method had no significant effect on these gels, the other two parameters were found to strongly influence the shear behavior of the systems. It was found that the dynamical behavior of these gels is controlled by the ability of a polymer chain to bridge clay platelets, which is influenced both by the length of the polymer and the clay and polymer concentrations.

Subjects/Keywords: Poly(ethylene oxide); Laponite; Shear-SANS; neutron scattering; rheology; nanocomposites; hydrogels

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

APA (6th Edition):

Loizou, E. (2007). Shear Responses of Poly(ethylene oxide)-Laponite Nanocomposite Hydrogels. (Doctoral Dissertation). Louisiana State University. Retrieved from etd-04092007-161111 ; https://digitalcommons.lsu.edu/gradschool_dissertations/2694

Chicago Manual of Style (16th Edition):

Loizou, Elena. “Shear Responses of Poly(ethylene oxide)-Laponite Nanocomposite Hydrogels.” 2007. Doctoral Dissertation, Louisiana State University. Accessed October 22, 2019. etd-04092007-161111 ; https://digitalcommons.lsu.edu/gradschool_dissertations/2694.

MLA Handbook (7th Edition):

Loizou, Elena. “Shear Responses of Poly(ethylene oxide)-Laponite Nanocomposite Hydrogels.” 2007. Web. 22 Oct 2019.

Vancouver:

Loizou E. Shear Responses of Poly(ethylene oxide)-Laponite Nanocomposite Hydrogels. [Internet] [Doctoral dissertation]. Louisiana State University; 2007. [cited 2019 Oct 22]. Available from: etd-04092007-161111 ; https://digitalcommons.lsu.edu/gradschool_dissertations/2694.

Council of Science Editors:

Loizou E. Shear Responses of Poly(ethylene oxide)-Laponite Nanocomposite Hydrogels. [Doctoral Dissertation]. Louisiana State University; 2007. Available from: etd-04092007-161111 ; https://digitalcommons.lsu.edu/gradschool_dissertations/2694


University of Florida

3. SILVERA BATISTA,CARLOS A. Manipulation of the Microenvironment Surrounding Single Wall Carbon Nanotubes and Its Effect on Photoluminescence and Separation Processes.

Degree: PhD, Chemical Engineering, 2011, University of Florida

The photoluminescence from single wall carbon nanotubes (SWNTs) has been Advisors/Committee Members: Ziegler, Kirk (committee chair), Ural, Ant (committee member), Fan, Zhonghui H (committee member), Rinzler, Andrew G (committee member).

Subjects/Keywords: Absorption spectra; Aggregation; Carbon nanotubes; Diameters; Electrodes; Micelles; Molecules; Nanotubes; Solvents; Surfactants; AGAROSE  – CHROMATOGRAPHY  – OPTICAL  – SANS  – SHEAR  – SOLVATOCHROMISM

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

APA (6th Edition):

A, S. B. (2011). Manipulation of the Microenvironment Surrounding Single Wall Carbon Nanotubes and Its Effect on Photoluminescence and Separation Processes. (Doctoral Dissertation). University of Florida. Retrieved from http://ufdc.ufl.edu/UFE0042883

Chicago Manual of Style (16th Edition):

A, SILVERA BATISTA,CARLOS. “Manipulation of the Microenvironment Surrounding Single Wall Carbon Nanotubes and Its Effect on Photoluminescence and Separation Processes.” 2011. Doctoral Dissertation, University of Florida. Accessed October 22, 2019. http://ufdc.ufl.edu/UFE0042883.

MLA Handbook (7th Edition):

A, SILVERA BATISTA,CARLOS. “Manipulation of the Microenvironment Surrounding Single Wall Carbon Nanotubes and Its Effect on Photoluminescence and Separation Processes.” 2011. Web. 22 Oct 2019.

Vancouver:

A SB. Manipulation of the Microenvironment Surrounding Single Wall Carbon Nanotubes and Its Effect on Photoluminescence and Separation Processes. [Internet] [Doctoral dissertation]. University of Florida; 2011. [cited 2019 Oct 22]. Available from: http://ufdc.ufl.edu/UFE0042883.

Council of Science Editors:

A SB. Manipulation of the Microenvironment Surrounding Single Wall Carbon Nanotubes and Its Effect on Photoluminescence and Separation Processes. [Doctoral Dissertation]. University of Florida; 2011. Available from: http://ufdc.ufl.edu/UFE0042883

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