Polyimides reinforced with the sol-gel derived organosilicon nanophase as low dielectric permittivity materials

Kramarenko, VYu; Shantalil, TA; Karpova, IL; Dragan, KS; Privalko, EG; Privalko, VP; Fragiadakis, D; Pissis, P

dc.contributor.author	Kramarenko, VYu	en
dc.contributor.author	Shantalil, TA	en
dc.contributor.author	Karpova, IL	en
dc.contributor.author	Dragan, KS	en
dc.contributor.author	Privalko, EG	en
dc.contributor.author	Privalko, VP	en
dc.contributor.author	Fragiadakis, D	en
dc.contributor.author	Pissis, P	en
dc.date.accessioned	2014-03-01T01:21:14Z
dc.date.available	2014-03-01T01:21:14Z
dc.date.issued	2004	en
dc.identifier.issn	1042-7147	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/16152
dc.subject	Dielectric properties	en
dc.subject	Nanocomposites	en
dc.subject	Organosilicon nanophase	en
dc.subject	Polyimides	en
dc.subject	Sol-gel technology	en
dc.subject.classification	Polymer Science	en
dc.subject.other	Composition	en
dc.subject.other	Crosslinking	en
dc.subject.other	Dielectric relaxation	en
dc.subject.other	Nanostructured materials	en
dc.subject.other	Permittivity	en
dc.subject.other	Probability	en
dc.subject.other	Reinforcement	en
dc.subject.other	Silicon	en
dc.subject.other	Sol-gels	en
dc.subject.other	Dielectric relaxation spectroscopy	en
dc.subject.other	Polyimides	en
dc.subject.other	nanocomposite	en
dc.subject.other	polyimide	en
dc.title	Polyimides reinforced with the sol-gel derived organosilicon nanophase as low dielectric permittivity materials	en
heal.type	journalArticle	en
heal.identifier.primary	10.1002/pat.422	en
heal.identifier.secondary	http://dx.doi.org/10.1002/pat.422	en
heal.language	English	en
heal.publicationDate	2004	en
heal.abstract	Polyimide (PI) nanocomposites prepared by the in situ generation of crosslinked organosilicon nanophase (ON) through the sol-gel process were characterized by densities, thermally stimulated depolarization currents and dielectric relaxation spectroscopy. Both a looser molecular packing of PI chain fragments adjacent to the ON and a loose inner structure of the spatial aggregates of ON were assumed to be responsible for a non-additive decrease of the experimental values of dielectric permittivity for the nanocomposites. The pattern of composition dependence of the apparent dielectric permittivity of the ON suggested a probability of a morphological change around the composition PAAS/MTS = 100/16 (presumably, a sort of percolation transition from small-size, individual clusters into large-size, infinite clusters). Thus, PI reinforced with the sol-gel derived nanophase may have a reasonably good potential as low dielectric permittivity materials. Copyright (C) 2004 John Wiley Sons, Ltd.	en
heal.publisher	JOHN WILEY & SONS LTD	en
heal.journalName	Polymers for Advanced Technologies	en
dc.identifier.doi	10.1002/pat.422	en
dc.identifier.isi	ISI:000220393200007	en
dc.identifier.volume	15	en
dc.identifier.issue	3	en
dc.identifier.spage	144	en
dc.identifier.epage	148	en