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Electrically Conductive Composites

IP.com Disclosure Number: IPCOM000044042D
Original Publication Date: 1984-Oct-01
Included in the Prior Art Database: 2005-Feb-05
Document File: 1 page(s) / 12K

Publishing Venue

IBM

Related People

Bargon, J: AUTHOR [+4]

Abstract

By forming a polymer composite from polyvinylchloride (PVC) as the matrix and imbedded therein polypyrrole, polymer films with good electrical conductivity (sZ10 ohm-1 cm-1) and mechanical properties similar to those of PVC can be obtained. PVC is one of the most versatile polymers produced by the chemical industry, because of its attractive mechanical properties. The concept of a PVC/polypyrrole (PPY) composite allows the combining of the electrical properties of PPY with the mechanical properties of PVC. The composite films of the PVC/PPY were prepared electrochemically in the following way: A platinum coated electrode was coated with a solution of PVC in an appropriate solvent (tetrahydrofuran) which, upon evaporation of the solvent, yielded a PVC film 4 to 17 mm thick.

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Electrically Conductive Composites

By forming a polymer composite from polyvinylchloride (PVC) as the matrix and imbedded therein polypyrrole, polymer films with good electrical conductivity (sZ10 ohm-1 cm-1) and mechanical properties similar to those of PVC can be obtained. PVC is one of the most versatile polymers produced by the chemical industry, because of its attractive mechanical properties. The concept of a PVC/polypyrrole (PPY) composite allows the combining of the electrical properties of PPY with the mechanical properties of PVC. The composite films of the PVC/PPY were prepared electrochemically in the following way: A platinum coated electrode was coated with a solution of PVC in an appropriate solvent (tetrahydrofuran) which, upon evaporation of the solvent, yielded a PVC film 4 to 17 mm thick. This coated electrode was put into a three-electrode cell containing
0.1M tetraethyl-ammonium fluoroborate (TEAFB) and 0.006M pyrrole in acetonitrile. Depending upon the thickness of the initial PVC film and upon the residence time of the sample in the electrochemical cell, the electrical conductivities of the composites were 2.0 < s > 35 ohm-1 cm-1 . The thickness of the films was measured using an alpha-step apparatus; the conductivities were determined via the four-probe technique. Depending on the electrolysis time and the thickness of the PVC films, either homogeneously conducting composites or films with different conductivities on the two sides (after p...