Poly( vinyl phenylmethylamine) ( PVPMA) and poly( vinyl benzlmethylyamine) ( PVBMA) were chemically synthesized and PVPMA/polyaniline ( PANI) and PVBMA/PANI composites were electrochemically prepared for the investigation of the effect of different bulky side groups of matrix polymers on the electrochemical properties of the polymer composites. The cyclic voltammertry, chronoamperomtry, and conductivity were investigated.