Effect of conductivity of filler on the percolation threshold of composites

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Title:	Effect of conductivity of filler on the percolation threshold of composites
Authors:	Deepa, K S Nisha, S K Parameswaran, P Sebastian, M T Jose James
Keywords:	Electrical conductivity Dielectric constant Polymer composites Hopping conductivity
Issue Date:	2009
Publisher:	American Institute of Physics
Citation:	Applied Physics Letters 94(14):142902;06 Apr 2009
Abstract:	Polytetrafluoroethylene (PTFE)-silver composites were prepared and the influence of conductivity, particle size, and interfacial area of Ag particle on the percolative behavior were investigated. Silver particles of two different grain sizes (3.5 and 5 mu m) were individually mixed with PTFE and the corresponding variations in the dielectric properties were studied. The composite containing Ag particles of size 3.5 mu m showed the percolation at 7 vol %, while for Ag particles of size 5 mu m, the percolation is at 10 vol %. In both cases near the percolation, the interparticle distances were in the range of similar to 3.3-3.8 mu m.
URI:	http://ir.niist.res.in:8080/jspui/handle/123456789/1032
ISSN:	0003-6951
Appears in Collections:	2009

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