SYNTHESIS AND CHARACTERIZATION OF THERMOMECHANICALLY AND CHEMOMECHANICALLY RESPONSIVE POLY(N-ISOPROPYLACRYLAMIDE-CO-METHACRYLIC ACID) HYDROGELS

被引：281

作者：

BRAZEL, CS ^{[1
]}

PEPPAS, NA ^{[1
]}

机构：

[1] PURDUE UNIV, SCH CHEM ENGN, W LAFAYETTE, IN 47907 USA

来源：

MACROMOLECULES | 1995年 / 28卷 / 24期

关键词：

D O I：

10.1021/ma00128a007

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Random copolymer hydrogels of methacrylic acid (MAA) and N-isopropylacrylamide (NIPAAm) were synthesized by free-radical polymerization in the presence of a cross-linking agent. The gels were characterized for their temperature- and pH-responsive behavior by equilibrium swelling experiments, differential scanning calorimetry, and thermal mechanical analysis. Depending upon composition, the gels showed sharp swelling transitions with small changes in temperature or pH, with initial time-dependent response reaching equilibrium on a time scale of hours.

引用

页码：8016 / 8020

页数：5

共 31 条

[1] TEMPERATURE-DEPENDENCE OF SWELLING OF CROSS-LINKED POLY(N,N'-ALKYL SUBSTITUTED ACRYLAMIDES) IN WATER [J].