ON THE MICROPHASE SEPARATION KINETICS OF SYMMETRICAL DIBLOCK COPOLYMERS

被引：8

作者：

RUSSELL, TP ^{[1
]}

CHIN, I ^{[1
]}

机构：

[1] INHA UNIV,DEPT POLYMER SCI & ENGN,INCHON,SOUTH KOREA

来源：

COLLOID AND POLYMER SCIENCE | 1994年 / 272卷 / 11期

关键词：

TIME-RESOLVED SMALL-ANGLE X-RAY SCATTERING; MICROPHASE SEPARATION; SYMMETRICAL DIBLOCK COPOLYMERS;

D O I：

10.1007/BF00654167

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Time-resolved small-angle x-ray scattering studies were performed on symmetric diblock copolymers of polystyrene and poly(methyl methacrylate), P(S-b-MMA). Freeze-dried powders of P(S-b-MMA) having a molecular weight of 8.4x10(4) were rapidly heated to temperatures above the glass transition temperature to initiate the microphase separation. The microphase separation process was found to consist of a rapid, local microphase separation followed by a long-term coarsening process. The period characterizing the lamellar microphase separated structure was found to increase initially and then saturate at longer times. These results are discussed in light of recent theoretical developments.

引用

页码：1373 / 1379

页数：7

共 31 条

[1] GAUSSIAN-COIL TO STRETCHED-COIL TRANSITION IN BLOCK COPOLYMER MELTS [J].