Anti-corrosive Polystyrene Coatings Modified with Tannic Acid on Zinc and Steel Substrates

Polystyrene (PS) polymer layers were prepared and studied as anti-corrosive barrier on both carbon steel zinc substrates. To increase the corrosion resistance of coatings, two different approaches considered: (i) use mesoporous silica-nanocontainers impregnated with a inhibitor (tannic acid) introduced into polystyrene matrix (ii) direct impregnation coatings same inhibitor. The nanocontainers characterized by Transmission Electron Microscopy. thickness adhesion measured, their behavior was investigated Electrochemical Impedance Spectroscopy. Results showed that used slightly decreased adhesion, but significantly increased coatings. introduction tannic acid offers higher than in case doped silica nanocontainers.