EFFECTS OF CHEMICAL LABELING ON THE PHASE-BEHAVIOR OF POLY(2-CHLOROSTYRENE) POLY(VINYL METHYL-ETHER) BLENDS

被引：13

作者：

TRANCONG, Q ^{[1
]}

KAWAKUBO, R ^{[1
]}

SAKURAI, S ^{[1
]}

机构：

[1] KYOTO INST TECHNOL,DEPT POLYMER SCI & ENGN,SAKYO KU,KYOTO 606,JAPAN

来源：

POLYMER | 1994年 / 35卷 / 06期

关键词：

CHEMICAL LABELING; PHASE BEHAVIOR; P2CS PVME BLENDS;

D O I：

10.1016/0032-3861(94)90017-5

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

The phase behaviour of poly(2-chlorostyrene)/poly(vinyl methyl ether) blends (P2CS/PVME) was investigated by means of light scattering and small-angle X-ray scattering (SAXS) using synchrotron radiation. It was found that P2CS/PVME blends possess a lower critical solution temperature. Chemically labelling P2CS with photoreactive anthracene not only decreases the miscibility of the blends but also shifts the critical point of the phase diagram towards a composition higher in P2CS - a typical effect of such systems with polydispersity induced by the labelling reaction. Within the temperature range of the experiments, the critical behaviour of both unlabelled and labelled blends can be accurately expressed by the mean-field theory with the critical exponents nu = 1/2 and gamma = 1. These experimental results suggest that the effects of chemical labelling of polymer chains via polymer reactions may play an important role in the phase decomposition kinetics and morphological studies of polymer blends.

引用

页码：1236 / 1241

页数：6

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