Dielectric dispersion and ac conductivity in - Iron particles loaded: Polymer composites

Psarras, GC; Manolakaki, E; Tsangaris, GM

dc.contributor.author	Psarras, GC	en
dc.contributor.author	Manolakaki, E	en
dc.contributor.author	Tsangaris, GM	en
dc.date.accessioned	2014-03-01T01:18:52Z
dc.date.available	2014-03-01T01:18:52Z
dc.date.issued	2003	en
dc.identifier.issn	1359-835X	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/15237
dc.subject	A. Particle-reinforcement	en
dc.subject	A. Polymer-matrix composites (PMCs)	en
dc.subject	B. Electrical properties	en
dc.subject	B. Interface/interphase	en
dc.subject	Electric modulus	en
dc.subject.classification	Engineering, Manufacturing	en
dc.subject.classification	Materials Science, Composites	en
dc.subject.other	Electric conductivity	en
dc.subject.other	Epoxy resins	en
dc.subject.other	Interfaces (materials)	en
dc.subject.other	Iron	en
dc.subject.other	Permittivity	en
dc.subject.other	Reinforcement	en
dc.subject.other	Thermal effects	en
dc.subject.other	Particle-reinforcement	en
dc.subject.other	Composite materials	en
dc.title	Dielectric dispersion and ac conductivity in - Iron particles loaded: Polymer composites	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/j.compositesa.2003.08.002	en
heal.identifier.secondary	http://dx.doi.org/10.1016/j.compositesa.2003.08.002	en
heal.language	English	en
heal.publicationDate	2003	en
heal.abstract	Polymer composites of an epoxy resin matrix with randomly dispersed Iron micro-particles in various amounts were prepared and their dielectric spectra were measured in the frequency range 5 Hz-13 MHz and temperature interval from ambient to 140 degreesC. Obtained data were analysed by means of electric modulus formalism. Interfacial or Maxwell-Wagner-Sillars relaxation process was revealed in the frequency range and temperature interval of the measurements, which was found to follow the Cole-Davidson approach for the distribution of relaxation times. The examined systems exhibit strong dispersion with frequency. At low frequencies ac conductivity tends to be constant, while at higher becomes frequency dependent varying as a power of frequency. Conductivity increases with temperature in the low frequency regime, remaining almost unaffected at higher frequencies. (C) 2003 Elsevier Ltd. All rights reserved.	en
heal.publisher	ELSEVIER SCI LTD	en
heal.journalName	Composites Part A: Applied Science and Manufacturing	en
dc.identifier.doi	10.1016/j.compositesa.2003.08.002	en
dc.identifier.isi	ISI:000186557400007	en
dc.identifier.volume	34	en
dc.identifier.issue	12	en
dc.identifier.spage	1187	en
dc.identifier.epage	1198	en