Type
Text
Type
Dissertation
Advisor
Gersappe, Dilip | Rafailovich, Miriam | Sokolov, Johnathan | Mammone, Thomas.
Date
2014-12-01
Keywords
Clay, Hydrogels, Rheology | Engineering
Department
Department of Materials Science and Engineering.
Language
en_US
Source
This work is sponsored by the Stony Brook University Graduate School in compliance with the requirements for completion of degree.
Identifier
http://hdl.handle.net/11401/76331
Publisher
The Graduate School, Stony Brook University: Stony Brook, NY.
Format
application/pdf
Abstract
Engineered Polymer hydrogels and hydrogels from Bio macromolecules have visco-elastic properties that can be measured using Oscillatory Shear Rheology. Manipulation and measurement of physical properties in gels including F-127 Pluronic Block Co-Polymer and Poly(N-isopropylacrylamide)-Clay are shown through OSR by addition of salts, clays and glucose at physiological levels. Rheological analysis of f-127 illustrates changes in G' reduction with phase transition temperature. Measurements also indicate physical changes due to the aforementioned additives vary as a function of the gel physical and chemical structure. In particular, non-enzymatic glycation is shown to change the modulus of elasticity in both of the gels tested. Rheological analysis is also interpreted to produce a reduction In gel mesh size in the PNIPA -clay gels due to a possible co-solvency between phases of varying degrees of hydration. | 63 pages
Recommended Citation
Lombardi, Jack, "Rheological Characterization of Nano Composite Hydrogels" (2014). Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions). 2255.
https://commons.library.stonybrook.edu/stony-brook-theses-and-dissertations-collection/2255