ELECTROCHEMICAL SYNTHESIS AND CHARACTERIZATION OF POLYPYRROLE DEPOSITED ON POROUS-ELECTRODE

Pyrrole has been polymerized by electrooxidation on spherical graphite particles in a pulsed bed reactor. The main characteristics of the re actor are the porous percolated anode and the periodic movement which is set on this particulate electrode. This system gives an homogeneous polymeric deposit which can be used for applications such as modified electrodes or resin exchangers. The influence of the synthesis condit ions on the morphology and conductivity of the pellicular phases is pr esented. In addition die particles covered with polypyrrole film have been used to reduce Ag+ ions showing that the polymer has indeed redox properties.