Electrodeposition Of Polypyrrole On Aluminum Alloy 2024-T3 From Dodecylbenzenesulfonic Acid Medium

In this work polypyrrole (PPy) films were electrodeposited on aluminum alloy 2024-T3 from dodecyl benzene sulfonic acid solutions. Scanning Electron Microscopy (SEM) was used to analyze the morphology of the aluminum surfaces coated with the polymeric films. It was observed that the PPy films deposited at 0.8V were more homogeneous. Degradation of PPy takes place at high potential values as confirmed by FTIR spectrum. Furthermore, the corrosion protection of aluminum by PPy films was also investigated by open circuit potential and potentiodynamic polarization curves in chloride solution. The results indicate that the performance of polymeric films depends on the electrodeposition potential.