NOVEL IONENEOMERIC POLYMER LIQUID-CRYSTALS

被引：14

作者：

YOUSIF, YZ

JENKINS, AD

WALTON, DRM

ALRAWI, JMA

机构：

[1] UNIV SUSSEX,SCH CHEM & MOLEC SCI,BRIGHTON BN1 9QJ,E SUSSEX,ENGLAND

[2] UNIV MOSUL,COLL SCI,DEPT CHEM,MOSUL,IRAQ

来源：

EUROPEAN POLYMER JOURNAL | 1990年 / 26卷 / 08期

关键词：

Calorimetry; -; Crystals; Liquid - Microscopic Examination - Polymers - Phase Transitions;

D O I：

10.1016/0014-3057(90)90165-Z

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 new class of ioneneomeric polymer liquid crystals made by double quaternization of the trans-1,2-bis(4-pyridyl)ethene unit with an appropriate spacer, X(CH2)nX (where n = 4-10, 12; X = MeSO3 or 4-MeC6H4SO3), has been prepared. Mesophase transition temperatures and stabilities are independent of the anion and length of spacer. Differential scanning calorimetry, polarizing optical microscopy and X-ray studies reveal that these polymers exhibit disclination or extinction-band texture. © 1990.

引用

页码：901 / 905

页数：5

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