Synthesis of polyanilines with high electrical conductivity

A procedure for the chemical synthesis of conductive polyanilines is presented. The effect of the relative concentration of reactants on the material properties is studied. The synthesis is realized with hydrochloric or phosphoric acids. It is shown that it is possible to perform the oxidative polymerization condensation at temperatures up to 99 °C and that its control can give rise to polyanilines with high conductivity. The optimum temperature depends on the acid used and is, for the cases considered, higher than the one used in the procedures reported so far. In particular, pellets of polyanilines synthesized with H3PO4 are produced with conductivities up to 58 S/cm.