SMALL-ANGLE X-RAY-SCATTERING INVESTIGATIONS OF NOVEL SUPERSTRUCTURES IN COMBINED CHIRAL LIQUID-CRYSTALLINE POLYMERS

被引：26

作者：

MENSINGER, H ^{[1
]}

BISWAS, A ^{[1
]}

POTHS, H ^{[1
]}

机构：

[1] UNIV MAINZ,INST ORGAN CHEM,W-6500 MAINZ,GERMANY

来源：

MACROMOLECULES | 1992年 / 25卷 / 12期

关键词：

D O I：

10.1021/ma00038a021

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 series of combined liquid crystalline polymers consisting of achiral main-chain mesogens and chiral side-chain mesogens have been investigated using small-angle X-ray scattering (SAXS). The data from unoriented and oriented samples reveal the presence of novel superstructures corresponding to bilayered and trilayered structural repeats in the smectic phase. On the basis of the analysis of the temperature-dependent SAXS data and structure-property relationships in similar low molecular weight liquid crystals, antiferroelectric ordering and ferrielectric ordering have been proposed for the bilayered and trilayered superstructures, respectively. The influence of the chemical structures of the main-chain and side-chain mesogens on the smectic layer spacing and on the formation of the superstructure is discussed.

引用

页码：3156 / 3163

页数：8

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