MICROPHASE SEPARATION IN POOR-SOLVENT POLYELECTROLYTE SOLUTIONS - PHASE-DIAGRAM

被引：52

作者：

DORMIDONTOVA, EE ^{[1
]}

ERUKHIMOVICH, IY ^{[1
]}

KHOKHLOV, AR ^{[1
]}

机构：

[1] ENTERPRISE SITESOFT, MOSCOW 127543, RUSSIA

来源：

MACROMOLECULAR THEORY AND SIMULATIONS | 1994年 / 3卷 / 04期

关键词：

D O I：

10.1002/mats.1994.040030403

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Microphase separation in solutions of weakly charged polyelectrolytes in poor solvents is studied in the weak segregation limit within the framework of the mean field approximation using a method first developed by Leibler. As a result a complete phase diagram of the solution near the critical point is obtained. The regions of stability of the disordered, homogeneous phase and of body-centered cubic (bcc), triangular and lamellar microdomain structures, as well as the phase separation regions are determined. The most striking difference in comparison with the corresponding diagram for block-copolymer melts is the existence of broad phase separation regions even for monodisperse systems. As the quality of solvent becomes poorer, the triangular microdomain structure remains the most stable among microdomain phases of other symmetry.

引用

页码：661 / 675

页数：15