CONSEQUENCE OF OXIDANT TO MONOMER RATIO ON POLYPYRROLE CONDUCTIVITY

In this work, we have synthesized conducting Polypyrrole by Chemical oxidative polymerization of pyrrole monomer using FeCl3 (ferric chloride) as oxidant for five different oxidant to monomer (O/M) ratios. Characterization of conducting polypyrrole was done using FTIR and conductivity measurement. The FTIR spectra confirmed the expected structure of the polypyrrole. The electrical conductivity was measured using a four-probe method. It was found that the electrical conductivity of the polypyrrole was chiefly dependent on the O/M ratio. It is observed that conductivity increase with O/M ratio and saturates at ratio 2.5