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2 August 1995 Formation of anisotropic polymer blend by photopolymerization of lyotropic LC-phase
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Proceedings Volume 2372, Liquid Crystals: Materials Science and Applications; (1995) https://doi.org/10.1117/12.215551
Event: Liquid Crystals: Materials Science and Applications, 1994, Zakopane, Poland
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.
© (1995) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Piotr Wojciechowski, J. Ulanski, Marian Kryszewski, Lidia Okrasa, and Wojciech Czajkowski "Formation of anisotropic polymer blend by photopolymerization of lyotropic LC-phase", Proc. SPIE 2372, Liquid Crystals: Materials Science and Applications, (2 August 1995); https://doi.org/10.1117/12.215551
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