Molecular motions and dielectric relaxation in comb-shaped halogen-containing poly(methacrylates) with phenyl benzoate mesogenic groups

Malinovskaya, VP; Nikonorova, NA; Borisova, TI; Barmatov, EB; Shibaev, VP; Pissis, P

dc.contributor.author	Malinovskaya, VP	en
dc.contributor.author	Nikonorova, NA	en
dc.contributor.author	Borisova, TI	en
dc.contributor.author	Barmatov, EB	en
dc.contributor.author	Shibaev, VP	en
dc.contributor.author	Pissis, P	en
dc.date.accessioned	2014-03-01T01:16:46Z
dc.date.available	2014-03-01T01:16:46Z
dc.date.issued	2001	en
dc.identifier.issn	0965-545X	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/14210
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-0035539327&partnerID=40&md5=73437fea57f5931408fd1705bf02f403	en
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-0035539327&partnerID=40&md5=73437fea57f5931408fd1705bf02f403	en
dc.subject.classification	Polymer Science	en
dc.subject.other	MOBILITY	en
dc.subject.other	POLYMERS	en
dc.title	Molecular motions and dielectric relaxation in comb-shaped halogen-containing poly(methacrylates) with phenyl benzoate mesogenic groups	en
heal.type	journalArticle	en
heal.language	English	en
heal.publicationDate	2001	en
heal.abstract	For the solutions of comb-shaped poly(methacrylates) containing chlorine or iodine atoms at the para position of the end aromatic ring of the phenyl benzoate mesogenic group (solvent, toluene), the dielectric loss factor was measured in the frequency range 1.5-12 MHz and at temperatures from -20 to +80 degreesC. Four regions of relaxation dipole losses were detected, three of which are ascribed to the local forms of mobility, while the fourth region exhibits the signs of cooperativity and is assigned to the movements of mesogenic fragments in aggregates, An increase in the bulkiness of a substituent on passing from a chlorine- to an iodine-substituted polymer provides evidence that an interchain dynamic correlation exists between all local kinetic fragments of the monomer unit.	en
heal.publisher	INTERPERIODICA	en
heal.journalName	Polymer Science - Series A	en
dc.identifier.isi	ISI:000171357900009	en
dc.identifier.volume	43	en
dc.identifier.issue	9	en
dc.identifier.spage	955	en
dc.identifier.epage	959	en