Differential thermal analysis under high pressure on liquid-crystalline compounds with lateral aromatic branches

Authors
Ernst, CR Schneider, GM Wurflinger, A Weissflog, W
Citation
Cr. Ernst et al., Differential thermal analysis under high pressure on liquid-crystalline compounds with lateral aromatic branches, BER BUN GES, 102(12), 1998, pp. 1870-1873
Citations number
16
Categorie Soggetti
Physical Chemistry/Chemical Physics
Journal title
BERICHTE DER BUNSEN-GESELLSCHAFT-PHYSICAL CHEMISTRY CHEMICAL PHYSICS
ISSN journal
0940483X → ACNP
Volume
102
Issue
12
Year of publication
1998
Pages
1870 - 1873
Database
ISI
SICI code
0005-9021(199812)102:12<1870:DTAUHP>2.0.ZU;2-U
Abstract
The high pressure phase behaviour of four liquid crystals, belonging to the class of laterally aryl-substituted mesogens has been studied with differe ntial thermal analysis. The pressure dependence of the phase transitions ha s been determined up to 300 MPa. Transition enthalpies have been determined with the aid of differential scanning calorimetry. Volume changes accompan ying the phase transitions have been calculated using the Clausius-Clapeyro n equation. Several metastable phase transitions have been discovered.