Percolation conduction in vapour grown carbon fibre

J.S. Andrade, A.M. Auto, Y. Kobayashi, Y. Shibusa and K. Shirane

Physica A: Statistical Mechanics and its Applications, 1998, vol. 248, issue 3, 227-234

Abstract: We investigate the conductivity variation with density of compacted vapour-grown carbon fibre (VGCF). The results indicate a typical transition between a non-linear domain at low compaction conditions and a regime where the conductivity increases roughly linearly with density when the sample is subjected to higher pressures. From a simple scaling argument, we suggest that percolation theory can be consistently applied to represent the morphological changes of the disordered system during the compaction process. In addition, a characteristic percolating behaviour has been detected from the results of conductivity experiments with a polymer composite of VGCF and polypropylene. In this case, an observed percolation threshold below 1% in volume confirms the highly structured nature of the conducting filler material.

Keywords: Percolation; Vapour grown carbon fibre; Composites (search for similar items in EconPapers)
Date: 1998
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:248:y:1998:i:3:p:227-234

DOI: 10.1016/S0378-4371(97)00568-2

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