Study and Preparation of Soluble Polypyrrole Composite Film

Through chemical oxidation method, pyrrole was polymerized in situ by FeCl3 in PMMA matrix dissolved in ethyl acetate. The resulting polypyrrole was dissolved in PMMA solution. A soft free-stand composite film was produced by the evaporation of solvent ethyl acetate. Its conductivity(Py 40% in mass fraction) was about 3 S/cm measured by standard four-probe method. It had a good stability in air. The factors affecting the polymerization such as temperature, time and matrix were investigated.