Comparative dielectric and TSDC studies of molecular mobility in liquid-crystalline side-chain poly(methacrylate)

Nikonorova, NA; Borisova, TI; Barmatov, EB; Pissis, P; Diaz-Calleja, R

dc.contributor.author	Nikonorova, NA	en
dc.contributor.author	Borisova, TI	en
dc.contributor.author	Barmatov, EB	en
dc.contributor.author	Pissis, P	en
dc.contributor.author	Diaz-Calleja, R	en
dc.date.accessioned	2014-03-01T01:17:38Z
dc.date.available	2014-03-01T01:17:38Z
dc.date.issued	2002	en
dc.identifier.issn	0032-3861	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/14593
dc.subject	Dielectric spectroscopy	en
dc.subject	LC side-chain polymethacrylate	en
dc.subject	Thermal windowing experiments	en
dc.subject.classification	Polymer Science	en
dc.subject.other	Dielectric liquids	en
dc.subject.other	Relaxation processes	en
dc.subject.other	Thermal effects	en
dc.subject.other	Molecular mobility	en
dc.subject.other	Acrylics	en
dc.subject.other	polymethacrylic acid	en
dc.subject.other	article	en
dc.subject.other	dielectric constant	en
dc.subject.other	liquid crystal	en
dc.subject.other	low temperature	en
dc.subject.other	molecular dynamics	en
dc.subject.other	spectroscopy	en
dc.subject.other	thermal stimulation	en
dc.subject.other	dielectric property	en
dc.subject.other	molecular structure	en
dc.subject.other	polymer property	en
dc.subject.other	spectroscopy	en
dc.title	Comparative dielectric and TSDC studies of molecular mobility in liquid-crystalline side-chain poly(methacrylate)	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/S0032-3861(01)00814-X	en
heal.identifier.secondary	http://dx.doi.org/10.1016/S0032-3861(01)00814-X	en
heal.language	English	en
heal.publicationDate	2002	en
heal.abstract	The molecular mobility of a LC side-chain polymethacrylate (PM6) was carried out by dielectric spectroscopy and by thermally stimulated discharge current (TSDC) methods. Six relaxation processes gamma(2), gamma(1), beta, beta(1), alpha, and delta at successively increasing temperatures were observed in PM-6. For each of them, a molecular interpretation was proposed. There is a good correlation between the peak temperature positions obtained from the global TSDC spectrum at an equivalent frequency and those obtained from the dielectric method. The TSDC thermal windowing experiments for PM-6 show the high ability to resolve the overlapping processes at low temperatures. Dielectric and TSDC methods giving different details of the observed relaxation processes, allow us to create the overall picture of molecular mobility in the system under investigation. These two methods revealing the differences and similarities of them obtained results could be considered as complementary to each other. (C) 2002 Published by Elsevier Science Ltd.	en
heal.publisher	ELSEVIER SCI LTD	en
heal.journalName	Polymer	en
dc.identifier.doi	10.1016/S0032-3861(01)00814-X	en
dc.identifier.isi	ISI:000174030200014	en
dc.identifier.volume	43	en
dc.identifier.issue	8	en
dc.identifier.spage	2229	en
dc.identifier.epage	2238	en