DIELECTRIC BEHAVIOR OF A SIDE-CHAIN-BEARING LIQUID-CRYSTALLINE POLYSILOXANE - A THERMALLY STIMULATED DEPOLARIZATION CURRENT STUDY

Authors
MANO JF MOURARAMOS JJ
Citation
Jf. Mano et Jj. Mouraramos, DIELECTRIC BEHAVIOR OF A SIDE-CHAIN-BEARING LIQUID-CRYSTALLINE POLYSILOXANE - A THERMALLY STIMULATED DEPOLARIZATION CURRENT STUDY, Journal of thermal analysis, 44(5), 1995, pp. 1037-1046
Citations number
7
Categorie Soggetti
Chemistry Analytical
Journal title
Journal of thermal analysis → ACNP
ISSN journal
03684466
Volume
44
Issue
5
Year of publication
1995
Pages
1037 - 1046
Database
ISI
SICI code
0368-4466(1995)44:5<1037:DBOASL>2.0.ZU;2-5
Abstract
The relaxation of electric field-induced polar orientation in a side-c hain-bearing liquid-crystalline polysiloxane was measured by means of thermally stimulated depolarization currents. Different relaxation mec hanisms were identified and characterized: the glass transition cooper ative relaxation exhibits compensation behaviour. On the other hand, l ower T-g and upper T-g discharges were observed and their molecular na ture is discussed.