Synthesis, Characterization and Proton Conducting Behavior of a Novel Composite Films Based on Phosphosilicate / Polypyrrole (PS/PPy)

Various phosphosilicate doped polypyrrole proton conductive thin films composite membranes were successfully prepared. Phosphosilicate obtained by sol-gel process mixing tetraethoxy silane with phosphoric acid at a molar ratio 1:5. The conductivity increased increasing both the content of gel and relative humidity. Temperature dependence showed Vogel-Tamman-Fulcher type behavior, indicating that was transferred through liquid like phase formed in micropores gel. high 0.065 S/cm membrane containing 60wt'% 60°C 90wt'% Key words: Membrane, conductivity, polypyrrole, composites, solid state.