High pressure differential thermal analysis of nematic compounds with different molecular shapes
作者:
C. Rein,
D. Demus,
期刊:
Liquid Crystals
(Taylor Available online 1994)
卷期:
Volume 16,
issue 2
页码: 323-331
ISSN:0267-8292
年代: 1994
DOI:10.1080/02678299408029156
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
By means of high pressure differential thermal analysis we measured the pressure/temperature phase diagrams of several nematic compounds with different molecular structures. Using pressures up to about 500 M Pa we found strongly nonlinear clearing curves. This behaviour is interpreted as changes from ‘weak’ intermolecular potentials to ‘hard’ potentials, or using thermodynarmic arguments, strong pressure dependence of the volume discontinuity at the clearing transitions.
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