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Synthesis and properties of hydrogels based on chitosan and poly(vinylalcohol) crosslinked by genipin

Khurma, Jagjit R. and Rohindra, David and Nand, Ashveen (2006) Synthesis and properties of hydrogels based on chitosan and poly(vinylalcohol) crosslinked by genipin. Journal of Macromolecular Science Part A - Pure and Applied Chemistry, 43 (4-5). pp. 749-758. ISSN 1060-1325

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Abstract

Semi-interpenetrating polymeric networks of chitosan and poly(vinyl alcohol) [PVA] were prepared by varying the ratio of the constituents. The hydrogels were crosslinked using genipin, a naturally occurring nontoxic cross-linking agent. The swelling behavior of these hydrogels was studied by immersing the films in deionized water at various temperatures and in buffer solutions of different pH. The states of water in the hydrogels, swollen at 25°C and pH 7, were determined using Differential Scanning Calorimetry (DSC). The swelling behavior of the gels was found to be dependent on temperature and pH of the medium. The amount of freezing water in the swollen hydrogels increased, whereas the amount of nonfreezing bound water remained more or less the same with increasing PVA concentration.

Item Type: Journal Article
Subjects: Q Science > QD Chemistry
Divisions: Faculty of Science, Technology and Environment (FSTE) > School of Biological and Chemical Sciences
Depositing User: Ms Neha Harakh
Date Deposited: 16 Mar 2006 11:49
Last Modified: 11 Jul 2012 16:26
URI: http://repository.usp.ac.fj/id/eprint/4000
UNSPECIFIED

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