NDLI: Effect of filler concentration on dielectric behaviour and on charge trapping in PP/clay nanocomposites

Content Provider	IEEE Xplore Digital Library
Author	Ambid, M. Mary, D. Teyssedre, G. Laurent, C. Montanari, G.C. Kaempfer, D. Mulhaupt, R.
Copyright Year	2004
Description	Author affiliation: Lab. de Genie Electr., Univ. Paul Sabatier, Toulouse, France (Ambid, M.; Mary, D.; Teyssedre, G.; Laurent, C.)
Abstract	Nanocomposites obtained from polypropylene base materials and organophilic layered silicate as nanofiller might be a great source of innovation for the development of advanced electrical devices. Previous investigations on dielectric and electrical properties of such nanocomposites with either isotactic (iPP) or syndiotactic (sPP) polypropylene as matrix have shown that trapping properties are highly modified by the presence of nanofillers. A reduction of space charge accumulation under DC stress has been shown. In this communication, we report on electrical properties using dielectric and photoluminescence spectroscopy. Dielectric spectroscopy has been used to characterize ionic conduction and to evaluate the effect of the filler concentration on the dielectric permittivity. A relaxation process has been observed at high filler concentration, high temperature and low frequency. Spectral analysis of photoluminescence was performed with the aim of inferring the nature of trapping centers. It appears that nanocomposites made of iPP and sPP exhibit different behaviours.
Starting Page	389
Ending Page	392
File Size	297379
Page Count	4
File Format	PDF
ISBN	0780385845
DOI	10.1109/CEIDP.2004.1364269
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2004-10-20
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Nanocomposites Photoluminescence Electrochemical impedance spectroscopy Dielectric materials Nanoscale devices Technological innovation Space charge Stress Permittivity Temperature
Content Type	Text
Resource Type	Article

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