Preparation and characterization of sodium carboxymethylcellulose/poly(N-isopropylacrylamide)/clay semi-IPN nanocomposite hydrogels

被引：105

作者：

Ma, Jinghong ^{[1
]}

Xu, Yajing ^{[1
]}

Fan, Bing ^{[1
]}

Liang, Borun ^{[1
]}

机构：

[1] Donghua Univ, State Key Lab Modificat Chem Fibers & Polymer Mat, Shanghai 200051, Peoples R China

来源：

EUROPEAN POLYMER JOURNAL | 2007年 / 43卷 / 06期

关键词：

hydrogel; sodium carboxymethylcellulose; poly(N-isopropylacrylamide); clay; pH-/temperature-responsive;

D O I：

10.1016/j.eurpolymj.2007.02.026

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

A new kind of pH-/temperature-responsive semi-interpenetrating polymer network hydrogels based on linear sodium carboxymethylcellulose (CMC) and poly(N-isopropylacrylamide) (PNIPA) cross-linked by inorganic clay (CMC/ PNIPA/Clay hydrogel) was prepared. The temperature- and pH-responsive behaviors, the mechanical properties of these hydrogels were investigated. The CMC/PNIPA/Clay hydrogels exhibited a volume phase transition temperature around 32 degrees C with no significant deviation from the conventional PNIPA hydrogels. The swelling ratio of the CMC/PNIPA/Clay hydrogels gradually decreased with increasing the contents of clay. The influence of pH value on swelling behaviors showed that there is a maximum swelling ratio at pH 5.9. Moreover, the CMC/PNIPA/Clay hydrogels exhibited excellent mechanical properties with high tensile stress and elongation at break in excess of 1200%. (c) 2007 Elsevier Ltd. All rights reserved.

引用

页码：2221 / 2228

页数：8

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