Abstract
Experimental results on electrical conductivity of polyaniline-hydrochloric acid (PANI-HCl) in polyvinyl alcohol (PVA) are investigated with PANI-HCl content above the percolation threshold. The negative temperature co-efficient of conductivity near the room temperature indicates the presence of intrinsic metallic character in the dispersed medium. The conductivity at low temperature has been analyzed on the basis of the superlocalisation of electronic states in the fractal structure of polyblends.
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