Cholesteric Textures of Aqueous Hydroxypropylcellulose Solutions
作者:
S. Guido,
期刊:
Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals
(Taylor Available online 1995)
卷期:
Volume 266,
issue 1
页码: 111-119
ISSN:1058-725X
年代: 1995
DOI:10.1080/10587259508033636
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
Liquid crystalline textures exhibited by aqueous solutions of hydroxypropylcellulose were investigated by video-enhanced contrast polarized light microscopy. For the first time in this particular system, typical cholesteric structures, such as oily streaks and fingerprint lines, were resolved in close detail by light microscopy. Biphasic separation was observed even in samples of concentration well above the critical value generally accepted for mesophase formation at room temperature (∼40% wt). The dependence of the helical pitch on polymer concentration was also studied, by Fourier transforming images of the cholesteric textures.
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