Novel preparation of electrically conducting poly (vinyl chloride) by photo‐dehydrochlorination from poly (vinyl chloride)/polypyrrole composite film

Polypyrrole (PPy) was deposited electrochemically on a platinum plate from a HNO 3 solution of pyrrole. The PVC/PPy composite film was finally obtained by casting PVC onto the PPy electrode from a THF solution of PVC. The prepared composite film was irradiated at 90°C with a low-pressure mercury lamp in the stream of hydrogen gas saturated with steam, and the PVC film was dehydrochlorinated, leading to the formation of conjugated polyene. The electrical conductivity (σ) of the PVC film in the irradiated composite film was revealed: σ= 2.51×10 -5 S cm -1 . By iodine doping, σ was further enhanced up to 5.04×10 -3 S cm -1