INTRINSIC VISCOSITY-MOLECULAR WEIGHT RELATIONSHIPS FOR POLY(N-ISOPROPYLACRYLAMIDE) SOLUTIONS

被引：191

作者：

FUJISHIGE, S

机构：

[1] Research Inst for Polymers &, Textiles, Tsukuba, Jpn, Research Inst for Polymers & Textiles, Tsukuba, Jpn

来源：

POLYMER JOURNAL | 1987年 / 19卷 / 03期

关键词：

MOLECULAR WEIGHT - SOLUTIONS - Viscosity;

D O I：

10.1295/polymj.19.297

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Poly(N-isopropylacrylamide) prepared by free radical polymerization was successfully fractionated into several fractions by using a carefully water-freed acetone as solvent and n-hexane as non-solvent. Based on the viscometric and osmometric studies of these fractions, the intrinsic viscosity-molecular weight relationships were determined. It was also found that the aqueous solution exhibited an abnormal concentration dependence of viscosity at temperatures higher than 25 degree C and the phase separation at 30 degree C.

引用

页码：297 / 300

页数：4