LATTICE MODEL OF HETEROGENEOUS POLYMER-CHAINS IN THE LIQUID-CRYSTALLINE STATE .1. STATISTICAL PROPERTIES

被引：5

作者：

MEDVEDEV, GA ^{[1
]}

GOTLIB, YY ^{[1
]}

机构：

[1] RUSSIAN ACAD SCI, INST MACROMOLEC CPDS, ST PETERSBURG 199004, RUSSIA

来源：

MACROMOLECULAR THEORY AND SIMULATIONS | 1994年 / 3卷 / 01期

关键词：

D O I：

10.1002/mats.1994.040030110

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

A heterogeneous lattice model for main-chain liquid-crystalline polymers is proposed. Phase transition parameters and statistical properties of the chain in the ordered phase are treated in the framework of a mean-field approximation. The order parameters for the mesogen and the spacer bonds, the chain shape anisotropy and the fraction of stretched isomers are obtained. Dependence of the Curie point on the spacer length and flexibility is considered. The ''odd-even'' effect is shown to increase drastically with the spacer flexibility. A strong dependence of the conformation changes in the ordered state on the spacer properties is obtained.

引用

页码：121 / 134

页数：14

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