Abstract
Polymerization of pyrrole on a polyacrylamide (PAA) coated electrode was carried out in acetonitrile. Different compositions of semi-conducting, composite films of PAA/Polypyrrole (PPy), were prepared by the electrochemical polymerization of pyrrole on PAA electrodes. The polymerization was possible only for a certain thickness of the polyacrylamide on the platinum. Conductivites of PAA/PPy films at different compositions were obtained. The electrochemical properties of polypyrrole-poly-acrylamide (PPy/PAA) composite films have been investigated by using cyclic voltammetry. The PPy/PAA composite film is suitable as the electroactive material due to its stable and controllable electrochemical properties. The films were examined by FTIR spectroscopy. The topography of surface films were analyzed by scanning electron microscope (SEM). The response behavior of PPy/PAA films at different compositions when exposed to Ar, C3H8 and H2 gases indicated that these films were only slightly sensitive to H2 gas.