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Proceedings Paper

Formation of anisotropic polymer blend by photopolymerization of lyotropic LC-phase
Author(s): Piotr Wojciechowski; J. Ulanski; Marian Kryszewski; Lidia Okrasa; Wojciech Czajkowski
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Paper Abstract

The structural characteristics are given for the polymer blend (PB) prepared by photopolymerization of the uniaxially oriented liquid crystal (LC)-phase of the hydroxypropylcellulose-acrylic acid (HPC-AA) system. The uniaxially oriented films of HPC- AA mesophase show a so-called banded structure under cross polarizers, characteristic for uniaxially oriented LC-polymer films. The state of order of HPC-AA mesophase was investigated by effect of dye orientation in LC-media. The influence of the length of the cholesteric pitch of HPC-AA on the order parameter of dye was found. The polymer blend as a product of the photopolymerization of AA in the lyotropic and uniaxially oriented medium HPC-AA is a birefringent solid system, was strongly affected by crosslinking processes. The PB has a LC-organization up to thermal decomposition at 230 degrees C, as shown by TOA and microscopic observations. The PB can be regarded as a new kind of the thermally resistant LC-polymer network.

Paper Details

Date Published: 2 August 1995
PDF: 7 pages
Proc. SPIE 2372, Liquid Crystals: Materials Science and Applications, (2 August 1995); doi: 10.1117/12.215551
Show Author Affiliations
Piotr Wojciechowski, Technical Univ. of Lodz (Poland)
J. Ulanski, Technical Univ. of Lodz (Poland)
Marian Kryszewski, Polish Academy of Sciences (Poland)
Lidia Okrasa, Technical Univ. of Lodz (Poland)
Wojciech Czajkowski, Technical Univ. of Lodz (Poland)

Published in SPIE Proceedings Vol. 2372:
Liquid Crystals: Materials Science and Applications
Jozef Zmija, Editor(s)

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