Phase separation in aqueous polymer solutions as studied by NMR methods

被引：0

作者：

Spevácek, J ^{[1
]}

机构：

[1] Acad Sci Czech Republ, Inst Macromol Chem, Prague 16206 6, Czech Republic

来源：

MACROMOLECULAR SYMPOSIA | 2005年 / 222卷

关键词：

aqueous polymer solutions; ionized copolymers; NMR; poly(N-isopropylmethacrylamide); poly(vinyl methyl ether); temperature-induced phase separation;

D O I：

暂无

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Some possibilities of H-1 NMR spectroscopy in investigations of structural-dynamic changes and polymer-solvent interactions during the temperature-induced phase transitions in aqueous polymer solutions are described. Results obtained recently on D2O solutions of poly(vinyl methyl ether) (PVME), poly(N-isopropylmethaerylamide) (PIPMAm), negatively charged copolymers of N-isopropylmethacrylamide and sodium methacrylate, and PIPMAm/PVME mixtures are discussed. A markedly different rate of dehydration process in dilute solutions on the one hand, and in semidilute and concentrated solutions on the other hand, was revealed from H-1 spin-spin relaxation measurements.

引用

页码：1 / 13

页数：13

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