Textures and defects in lyotropic liquid crystals of ethyl-cyanoethyl cellulose
作者:
Y. Huang,
J.R. Shen,
期刊:
Liquid Crystals
(Taylor Available online 1995)
卷期:
Volume 19,
issue 3
页码: 313-318
ISSN:0267-8292
年代: 1995
DOI:10.1080/02678299508031985
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
Textures and defects in ethyl-cyanoethyl cellulose [(E-CE)C]/dichloroacetic acid (DCA) cholesteric liquid crystalline solutions and in (E-CE)C/polyacrylic acid (PAA) composites were observed and studied by polarizing microscopy and electron microscopy. The existence of χ, λ and τ disclinations were observed in the mesophase with disk-like and band-like textures. Pairs of disclinations with different signs were also found in the mesophase with the band-like texture. Domain walls were observed in (E-CE)C/PAA composite films with cholesteric order by TEM. The orientation of polymer chains in the vicinity of the core of the disclinations is discussed.
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