Synthesis and characteristics of interpenetrating polymer network hydrogels composed of poly(vinyl alcohol) and poly(N-isopropylacrylamide)

被引：88
|
作者：
Kim, SJ [1 ]
Park, SJ [1 ]
Kim, SI [1 ]
机构：
[1] Hanyang Univ, Dept Biomed Engn, Seoul 133605, South Korea
来源：
REACTIVE & FUNCTIONAL POLYMERS | 2003年 / 55卷 / 01期
关键词：
interpenetrating polymer network; poly(vinyl alcohol); poly(N-isopropylacrylamide); hydrogel;
D O I：
10.1016/S1381-5148(02)00215-8
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
Interpenetrating polymer network (IPN) hydrogels based on poly(vinyl alcohol) (PVA) and poly(N-isopropylacrylamide) (PNIPAAm) were prepared by the sequential-IPN method. The characterizations of IPN hydrogels were investigated by swelling experiment, Fourier transform infrared (FT-IR) spectroscopy and differential scanning calorimetry (DSC). IPN hydrogels exhibited a relatively high swelling ratio in the range 180-300% at 35 degreesC. The swelling ratio of hydrogels depended on pH and temperature. DSC was used for the quantitative determination of the amounts of freezing and non-freezing water. Free water contents in the hydrogels IPN1, IPN2 and IPN3 were 45.8, 37.9 and 33.1% in pure water, respectively. (C) 2002 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：61 / 67
页数：7
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