Abstract
MnO 2-Doped Polyaniline/Poly (Vinyl alcohol) thin films were prepared chemical oxidative polymerization, us ing microwave oven technique on glass substrate. These thin films prep ared by using Analytical Reagent grade solutions of Polyaniline, Poly (Vinyl alcohol), MnO 2, primary dopant hydrochloric acid are mixed in stoic hiometric proportion. The solutions were kept in mi crowave for 10 sec then oxides with ammonium peroxydisulphate o xidant, then after kept in water bath to obtain the uniform thin films. Films were dries it in air medium for an hour. The electrical and gas sensing properties of these films were inve stigated. MnO 2, Doped Polyaniline/Poly(Vinyl alcohol) thin films showed better ammonia and trimethyl ammine vapour respons e as compared to undoped Polyaniline / Poly (Vinyl alcohol) thin films. The gas response was observed to be increased with the ir stoichiometric composition of films.
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