Abstract
To develop a new field for the electrochemical application of vulcanizates, the electrochemical polymerizatoin of pyrrole on conductive vulcanizates containing Ketjen black and their electrochemical properties have been investigated. When EPDM vulcanizates containing Ketjen black more than 20phr are used as a working electrode, the polymerization of pyrrole occurred easily on them and conductive laminates consisting of vulcanizates and polypyrrole were obtained. For this, the conductivity of EPDM vulcanizates needs more than 0.1S/cm. On the electrochemical polymerization proposed, the selection of elastomers and solvents for electrochemical reaction were important, that is, the combination of EPDM and acetonitrile was best in the case of electrochemical polymerization of pyrrole. Increasing Percadox 14 decreased the conductivity of vulcanizates. Polypyrrole products on vulcanizates electrode had higher close adhesion to vulcanizates and higher density and conductivity than that on Pt electrode. The conductive laminates indicated electrochemical activites such as a doping-dedoping reaction and a charge-discharge reaction.
