Molecular theory on liquid crystalline mixtures

被引:1
|
作者
Matsuda, H
Kimura, H
机构
[1] Yamagata Univ, Fac Engn, Yonezawa, Yamagata 9928510, Japan
[2] Fukui Univ Technol, Dept Appl Phys & Chem, Fukui 9108508, Japan
来源
MOLECULAR CRYSTALS AND LIQUID CRYSTALS | 2004年 / 413卷
关键词
liquid crystal; molecular theory; phase transition; rod-disc rnixture;
D O I
10.1080/15421400490436700
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
The nematic-isotropic phase transitions in mixtures of rod-like and disc-like molecules are studied by a mean field theory. We consider both attraction and hard-core repulsion for the model molecules, thermotropic phase transitions are found from the isotropic to one of the two types of uniaxially symmetric nematic phases: optically positive N+ and negative N-. On the other hand, biaxially symmetric nematic phase is shown to be always less stable than the uniaxial phase. We predict that re-entrant phase transition occur for the lyotropic system.
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页码:2323 / 2332
页数:10
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