Electropolymerization kinetics of a binary mixture of pyrrole and o‐aminobenzoic acid and characterization of the obtained polymer films

Abstract Poly (pyrrol‐co‐o‐aminobenzoic acid) has been synthesized electrochemically from an aqueous acid medium. The initial rate of electrocopolymerization reaction on platinum electrode is small and the rate law is: Rate = K2 [D]1.02[HCl] 1.44[M]2.00. The apparent activation energy (Ea) is found to be 90.11 kJ mol−1. The polymer films obtained have been characterized by cyclic voltammetry, X‐ray diffraction, elemental analysis, thermogravimetric analysis, scanning electron microscopy, 1H NMR, and IR‐spectroscopy. The mechanism of the electrochemical polymerization reaction has been discussed. The monomer reactivity ratios (r1 and r2) were calculated. © 2008 Wiley Periodicals, Inc. J Appl Polym Sci, 2008