PROTECTION OF METALS AND PHYSICAL CHEMISTRY OF SURFACES, vol.58, no.3, pp.592-602, 2022 (Peer-Reviewed Journal)
Polyaniline composites containing TiO2 and ZnO nanoparticles (0.1 and 1.0 wt %) were synthesized by chemical oxidative polymerization method. Polymeric nanocomposites were characterized by using FTIR spectroscopy, XRD, SEM and TEM methods. In addition, thermal properties were investigated by TGA. To prepare PVB/PAn-ZnO and PVB/PAn-TiO2 nanocomposites, PAn-ZnO and PAn-TiO2 powder polymer were dissolved in methanol and mixed with polyvinyl butyral (PVB) and applied to the previously cleaned stainless steel surface. The corrosion behavior of stainless steel surfaces coated with PVB/PAn-ZnO and PVB/PAn-TiO2 composite was researched in 3.5% NaCl using electrochemical impedance spectroscopy (EIS). In addition, steel plates covered with polymeric composite were kept in 3.5% NaCl solution for 15 days and corrosion development was investigated by SEM. It has been found that the presence of inorganic nanoparticles significantly improves the corrosion prevent performance of the polymeric composite and PVB coatings.