Study of room temperature LPG sensing behavior of polyaniline thin film synthesized by cost effective oxidative polymerization technique
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Polyaniline thin films doped with an inorganic acid were deposited on glass substrate using simple and cost effective oxidative polymerization technique. As-synthesized thin film of polyaniline was studied with different characterization techniques. The formation of polyaniline on glass substrate was confirmed by X-ray diffraction and UV spectroscopy. Surface morphological investigation was performed using scanning electron microscopy. Gas sensing behavior of polyaniline thin film was studied by I–V measurements before and after liquefied petroleum gas (LPG) exposure at room temperature, based on change in electrical resistance. The observed result shows polyaniline thin film sensor is efficient for LPG detection at room temperature.
KeywordsPolyaniline Emeraldine Base Emeraldine Salt Polyaniline Film Polyaniline Thin Film
Financial assistance from Board of Research in Nuclear Sciences (BRNS), Mumbai through Project Ref No. (2010/34/41/BRNS/1982) is gratefully acknowledged. One of the authors Ravikiran Birajadar would like to thank Prof. P. V. Sarode, Principal Government Polytechnic, Pune for their constant encouragement and support for pursuing research work.
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