Journal
JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS
Volume 40, Issue 19, Pages 2333-2338Publisher
JOHN WILEY & SONS INC
DOI: 10.1002/polb.10218
Keywords
electrolyte hydrogel; modified double-lattice theory; ideal donnan theory
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We investigated the effect of charge densities of the gel network and ionic strength of solution on swelling behaviors of ionized gels. We used the modified double-lattice model, Flory-Erman's elastic model, and the ideal Donnan theory to describe swelling behaviors of the electrolyte bounded hydrogels. Energy parameters (epsilon/k, deltaepsilon/k) were obtained from fitting liquid-liquid equilibria data of the linear poly-N-isopropylacrylamide/water system and two adjustable model parameters obtained from a nonelectrolyte hydrogel system. Calculated values agreed with experimental data for the given systems. (C) 2002 Wiley Periodicals, Inc.
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