ON THE INTERACTION OF THE MORPHOLOGICAL STRUCTURE AND THE LC BEHAVIOR OF LC SIDE-GROUP BLOCK-COPOLYMERS

被引：70

作者：

FISCHER, H ^{[1
]}

POSER, S ^{[1
]}

ARNOLD, M ^{[1
]}

机构：

[1] UNIV BRISTOL,HH WILLS PHYS LAB,BRISTOL BS8 1TL,AVON,ENGLAND

来源：

LIQUID CRYSTALS | 1995年 / 18卷 / 03期

关键词：

D O I：

10.1080/02678299508036651

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The interaction between morphological structure and phase behaviour of a LC side group block copolymer has been investigated using DSC, TEM and small angle X-ray diffraction. All samples of Polystyrene-block-2-(3-cholesteryloxycarbonyloxy)ethyl methacrylate (PS-b-PChEMA) show a phase separation between the two blocks. It was found that in the case of those samples where the liquid crystalline sub-phase is not continuous (spheres), only a nematic phase is seen, whereas in all samples in which there is a continuous liquid crystalline sub-phase, the smectic A phase of the homopolymer is formed. On the other hand, the block copolymer seems to stabilize the LC phase; no dependency of the clearing temperatures on the molecular weight of the LC blocks has been observed.

引用

页码：503 / 509

页数：7

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