K. Cheung, D. Bloor, G. Stevens
Sep 1, 1988
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214
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Quality indicators
Journal
Polymer
Abstract
Abstract Polypyrrole containing the toluenesulphonate counter-ion has been electrochemically polymerized on a wide range of metallic electrodes, including platinum, titanium, aluminium, mild steel and brass. The oxidation behaviour of pyrrrole monomer in the presence of these electrodes has been investigated and the influence of metal oxide layers is discussed. The redox behaviour of the polymers prepared on different electrodes suggests that the reaction appears quasi-reversible for all the oxidizable metal electrodes and only in the case of platinum is the reaction simply diffusion-controlled. Chemical and physical characterization of the materials is also presented and the presence of a distinct fibrillar second phase is reported for the first time.