title: Investigation of electrochemical degradation process in polyaniline/polystyrene sulfonated self-assembly films by impedance spectroscopy.
abstract: In this study, the electrochemical degradation of polyaniline/polystyrene sulfonated (PANI/PSS) self-assembly films was investigated by an electrochemical impedance technique using transmission line models to fit the results. The experiments were performed by polarizing the working electrode at a fixed oxidative potential of 0.55 V. The results showed that changes in the electrochemical behavior of the oxidized PANI/PSS film occurred mainly in the polymer/solution interface by an increase in the charge transfer resistance.
authors.affiliation: Chemistry Department, Federal University of São Carlos, P.O Box 676, Postal Code 13565-905, São Carlos, SP, Brazil.
authors.forename: F R
authors.initials: FR
authors.lastname: Simões
authors.forename: L A
authors.initials: LA
authors.lastname: Pocrifka
authors.forename: L F Q P
authors.initials: LF
authors.lastname: Marchesi
authors.forename: E C
authors.initials: EC
authors.lastname: Pereira