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Calorimetric investigations in liquid crystalline terephthalylidene-bis-[4-n-alkylanilines] (TBAA)

✍ Scribed by A. Wiegeleben; D. Demus

Publisher: John Wiley and Sons
Year: 1982
Tongue: English
Weight: 270 KB
Volume: 17
Category: Article
ISSN: 0232-1300
DOI: 10.1002/crat.2170170206

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✦ Synopsis

Abstract

By means of the calorimeter DSC‐2 the temperatures and enthalpies of phase transitions were measured in the homologues of TBAA with the alkyl chain length n from 2 up to 10, in order to confirm the existence of nine types of liquid crystalline mesophases and of the polymorphism in the solid state within this series. Pre‐and posttransitional phenomena, hysteresis effects in low temperature smectics and relations between enthalpies and chain lenght resp. kind of concerning phases could be observed.

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