Polymer network structure and electro-optic performance of polymer stabilized cholesteric textures I. The influence of curing temperature
作者:
I. DIERKING,
L. L. KOSBAR,
A. C. LOWE,
G. A. HELD,
期刊:
Liquid Crystals
(Taylor Available online 1998)
卷期:
Volume 24,
issue 3
页码: 387-395
ISSN:0267-8292
年代: 1998
DOI:10.1080/026782998207208
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
The effect of curing temperature on the electro-optic behaviour and network morphology of reverse mode polymer stabilized cholesteric textures (PSCTs) has been studied. Scanning electron micrographs indicate that increasing the curing temperature generally results in a larger average void size within a polymer network, while the morphology of the individual strands (which varies significantly for different monomers) remains largely unchanged. PSCTs with sufficiently large network voids exhibit a two-stage switching behaviour consistent with a model in which the cholesteric liquid crystal is divided between two distinct environments one in which the liquid crystal is strongly dominated by the polymer network, the other in which a bulk-like behaviour, comparable to the unstabilized cholesteric material, is observed.
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