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Abstract
In this work, the dynamics of electrochemical polymerization of pyrrole was assessed by measuring the system current and polymer yield under different cell dimensions and polymerization conditions. The effects of distance between electrodes on the yield and system current were described. Also, the effects of monomer concentration and electrode size on monomer-to-polymer conversion were critically analyzed with respect to the energy supplied to the system. The enthalpy of the process was also determined. It was observed that the yield was directly proportional to the product of system current and time when sufficient monomer and electrode space for deposition of polymer were available otherwise the electrical energy was transformed more into heat energy. Electrochemical polymerization of pyrrole was found to be an exothermic process, and the enthalpy of polymerization increased with an increase in polymerization temperature.