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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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