NEMATIC, SMECTIC AND COLUMNAR PHASES OF MAIN-CHAIN LIQUID-CRYSTAL POLYETHERS

被引：14

作者：

UNGAR, G

ZHOU, JP

PERCEC, V

CHU, PW

机构：

[1] UNIV SHEFFIELD,CTR MOLEC MED,SHEFFIELD S1 4DU,S YORKSHIRE,ENGLAND

[2] CASE WESTERN RESERVE UNIV,DEPT MACROMOLEC SCI,CLEVELAND,OH 44106

来源：

MACROMOLECULAR SYMPOSIA | 1995年 / 98卷

关键词：

D O I：

10.1002/masy.19950980183

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 number of interesting thermotropic mesophases and transitions occur in main-chain polyethers and copolyethers based on aliphatic spacers and various semi-flexible mesogens of the general 1-(4-hydroxyphenyl)-2-(2-R-4-hydroxyphenyl)ethane (RBPE) or 1-(4'-hydroxybiphenyl-4-yl)-2-(4-hydroxyphenyl)propane (TPP) type. The unusual effects described here are (i) nematic-nematic transition, (ii) smectic-B (crystal-B) phase and its shear-induced orientation, (iii) calamitic columnar phase, and (iv) nematic-columnar phase sequence.

引用

页码：951 / 966

页数：16

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