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Responsive Coatings And Functional Systems From Pectin Polysaccharides, Zeinab Veisi
Responsive Coatings And Functional Systems From Pectin Polysaccharides, Zeinab Veisi
USF Tampa Graduate Theses and Dissertations
Pectin polysaccharides provide promising potential as all-natural, non-toxic “green” coatings. Pectin polysaccharides have been drawing growing attention as elements of stimuli-responsive systems and as source materials for functionalized robust coatings. They can be extracted from several natural sources and are intrinsically biocompatible. The majority of the applications of pectin gels require a better understanding of the properties of thin layers of gels at surfaces and interfaces. Despite the prevalence of bulk gels of pectin, coatings of pectin have not been reported. In bulk hydrogels, swelling of polymer networks is controlled by a diffusion limited transport process in which the rate …
Volume-Phase Transitions In Responsive Photo-Cross-Linked Polymer Network Films, Leena Patra
Volume-Phase Transitions In Responsive Photo-Cross-Linked Polymer Network Films, Leena Patra
USF Tampa Graduate Theses and Dissertations
The overall thrust of this project is to gain an insight into a class of surface-tethered cross-linked thin films of poly(N-alkylacrylamides) that display a lower critical solution temperature (LCST).The structure of the alkyl group and the modification of the amide groups determine the LCST and resultant volume-phase transition behavior. The aim of this study involves synthesis and characterization of thin films and to correlate the volume-transition behavior to the structure of the alkyl group. For better understanding the volume-transition behavior, the polymer films are perturbed by the Hofmeister salt series to examine trends between different alkyl groups. While most of …