Electropolymerization kinetics of a binary mixture of o-phenylenediamine and 2-aminobenzothiazole and characterization of the obtained polymer films



Poly(o-phenylenediamine-co-2-aminobenzothiazole), P(oPD-co-2ABT), 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 = KE [Na2SO4]0.48 [HCl]1.09 [M]2.08. The apparent activation energy (Ea) is found to be 57.44 kJ mol−1. The polymer films obtained have been characterized by cyclic voltammetry, X-ray diffraction, elemental analysis, TGA, scanning electron microscopy, and IR-spectroscopy. The mechanism of the electrochemical polymerization reaction has been discussed. The monomer reactivity ratios (r1 and r2) were calculated using Fineman-Röss method. © 2010 Wiley Periodicals, Inc. J Appl Polym Sci, 2011