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

被引：190
|
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.
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页码：297 / 300
页数：4
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