swelling behaviors and network parameters of cationic starch-g-acrylic acid/poly(dimethyldiallylammonium chloride) semi-interpenetrating polymer networks hydrogels

Amphiphilic semi-interpenetrating polymer networks (semi-IPN) hydrogels were prepared by a sequential-IPN method by acrylic acid graft copolymerization into cationic starch in mild aqueous media of poly(dimethyldiallylammonium chloride). Some main factors were investigated to evaluate the swelling o...

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Bibliographic Details
Published in:Journal of applied polymer science 2008-11, Vol.110 (3), p.1828-1836
Main Authors: Li, Xin, Xu, Shimei, Pen, Yang, Wang, Jide
Format: Article
Language:English
Subjects:
amphiphilic
Applied sciences
Exact sciences and technology
hydrogels
interpenetrating networks (IPN)
mechanical properties
Natural polymers
Organic polymers
Physicochemistry of polymers
Properties and characterization
Solution and gel properties
starch
Starch and polysaccharides
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Summary:Amphiphilic semi-interpenetrating polymer networks (semi-IPN) hydrogels were prepared by a sequential-IPN method by acrylic acid graft copolymerization into cationic starch in mild aqueous media of poly(dimethyldiallylammonium chloride). Some main factors were investigated to evaluate the swelling of hydrogels, and the network parameters Mc were given accordingly to elaborate the interaction between polymers. The chemical structure of the resulting hydrogel was confirmed using Fourier transform infrared spectroscopy. The cationic starch-based semi-IPN hydrogels achieved a high swelling capacity of 1070 g/g in deionized water and 94 g/g in 0.9 wt % NaCl solution, respectively) and high compressive stress in a high water content. Besides, a different pH-dependent behavior was found for this semi-IPN hydrogel.
ISSN:0021-8995
1097-4628
DOI:10.1002/app.28581