High electrically conductive polyaniline/partially phosphorylated poly(vinyl alcohol) composite films via aqueous dispersions

A novel low-cost approach was developed for the preparation of high electrically conducting composite films with high comprehensive properties. The polyaniline (PAn)/partially phosphorylated poly(vinyl alcohol) (P-PVA) dispersions were synthesized by the chemical oxidative polymerization of aniline in aqueous acidic (1 M HCl) media containing the partially phosphorylated poly(vinyl alcohol) (P-PVA), which can be cast directly to form smooth and mechanically robust composite films. The electrical, thermal, and mechanical properties of the PAn/P-PVA composite films were affected by the feeding ratio of aniline in polymerization. The uniform composite films showed a higher degree of crystalline orientation and higher electrical conductivity than those of the PAn/PVA films prepared with the same feeding ratio of aniline.