A simple route to high-strength hydrogel with an interpenetrating polymer network

被引：0

作者：

Tang, Qunwei ^{[1
]}

Sun, Xiaoming ^{[1
]}

Li, Qinghua ^{[1
]}

Wu, Jihuai ^{[1
]}

Lin, Jianming ^{[1
]}

Huang, Miaoliang ^{[1
]}

机构：

[1] Key Laboratory for Functional Materials of Fujian Higher Education, Institute of Material Physical Chemistry, Huaqiao University

来源：

E-Polymers | 2009年

关键词：

Compendex;

D O I：

10.1515/epoly.2009.9.1.1087

中图分类号：

学科分类号：

摘要：

Hydrogels have potential applications in many fields, but the poor mechanical strength has limited their further development. In this article, we designed a simple route to high-strength interpenetrating polymer network (IPN) hydrogel from polyacrylamide (PAAm) and poly(vinyl alcohol) (PVOH). The highest tensile strength and elongation were 2.4 Mpa and 4300 %, respectively. It was found that the hydrogel strength depended on the chemical crosslinking, physical entanglement and PVOH precipitates. Because of the hydrogen bonding interactions and self-crosslinking, the structure of PVOH transferred from crystal to amorphous. PVOH precipitates scattered in the crosslinked PAAm matrix which dispersed the stress and improved the hydrogel toughness. The simple method is versatile in synthesizing high-strength IPN hydrogels using many kinds of polymer species.

引用

共 17 条

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