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Preparation and morphology of electrically conductive and transparent poly(vinylchloride)-polypyrrole composite films
Authors:Tae Jin Kang  Seizo Miyata  Yoshiyuki Miyaki
Affiliation:(1) Department of Fiber and Polymer Science, Seoul National University, Seoul, Korea;(2) Department of Material Systems Engineering, Tokyo University of Agriculture and Technology, Tokyo, Japan;(3) Polymer Research Laboratory, Tosoh Corporation, Yokaichi, Japan
Abstract:Summary The chemical process of preparing poly(vinylchloride)-polypyrrole composite films with high electrical conductivity and transparency has been studied. Pyrrole has been diffused into the poly(vinylchloride) matrix in the swelling medium of n-hexane and acetone mixture. The oxidative polymerization of the diffused pyrrole in the binary solvent system of acetonitrile and methanol gives high conductivity of the polypyrrole as well as the good penetration of the oxidant into the PVC polymer matrix. The analytical testing of the composite film shows the formation of homogeneous mixture of polypyrrole and poly(vinylchloride) conductive layer within the 1.0mgrm of thickness on the film surface. The transparency of the composite film showed about 50–60% at 500 nm. The electrical conductivity of the composite was about 20 s/cm.
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