Esr Studies Of Conducting Polypyrrole-Rubber Blends

The changes in the magnetic properties of pure polypyrrole films and polypyrrole rubber films occurring during thermal treatments have been studied by ESR spectroscopy. For both kinds of films, thermal treatments lead to the formation of new unpaired spins. The temperature dependence of the linewidths and the lineshapes could be accounted for a metallic behavior of the spin system.