Accession Number : ADA159708


Title :   Electronically Conductive Composite Polymer Membranes.


Descriptive Note : Technical rept.,


Corporate Author : TEXAS A AND M UNIV COLLEGE STATION DEPT OF CHEMISTRY


Personal Author(s) : Penner,R M ; Martin,C R


Full Text : http://www.dtic.mil/get-tr-doc/pdf?AD=ADA159708


Report Date : 20 Sep 1985


Pagination or Media Count : 31


Abstract : We have recently described the preparation and properties of ionically conductive Nafion-impregnated Gore-tex (NIGT) composite membranes. In this paper we describe electronically conductive composite membranes prepared by electropolymerizing either pyrrole or thiophene within the ionically conductive NIGT membrane. These composites have the mechanical properties of the host membrane yet the electronic conductivity of the NIGT/polypyrrole composite membrane is essentially identical to that of polypyrrole. For comparison, we have also attempted to electropolymerize pyrrole in nafion membranes and films and in bare Gore-tex and poly(vinyl chloride)-impregnated Gore-tex. We have found that the rate of polymerization of pyrrole at a NIGT-coated Pt electrode is higher than the rate at bare Pt. The origins of this rate enhancement are probed.


Descriptors :   *POLYMERS , *ELECTRICAL CONDUCTIVITY , *MEMBRANES , MECHANICAL PROPERTIES , OPTIMIZATION , COMPOSITE MATERIALS , POLYMERIZATION , RATES , ELECTRONS , PYRROLES , ION EXCHANGE RESINS , IONIC CURRENT , POLYVINYL CHLORIDE , THIOPHENES


Subject Categories : Physical Chemistry
      Plastics


Distribution Statement : APPROVED FOR PUBLIC RELEASE