Conducting polyaniline composite: a reusable sensor material for aqueous ammonia

The present paper reports about polyaniline–(acrylonitrile–butadiene–styrene) composite film as a sensor material for aqueous ammonia. The resistance change of the composite film on exposure to different concentrations of aqueous ammonia shows its utility as a sensor material. The composite film on exposure to 10−4 and 10−5 N aqueous ammonia shows a well-defined response behaviour and this aspect has been utilized in designing the ammonia sensor.