CORROSION INHIBITION STUDIES OF 3- [(METHACRYLOYLAMINO) PROPYL] TRIMETHYLAMMONIUM CHLORIDE AND N-SUBSTITUTED ACRYLAMIDE IONOMERS

Free radical copolymerization of MPTMACl with N-substituted acrylamide was carried out in aqueous methanol using ACVA as an initiator. Since MPTMACl monomer was in the form of an aqueous solution (50%) and the Nsubstituted acrylamides are insoluble in water, methanol/water (3:1) medium was used for copolymerization. The synthesized copolymers(ionomers) are characterized by C-NMR, SEM, TGA analysis. The inhibition effect of ionomers on the mild steel in 3.5% NaCl solution was studied by potentiodynamic polarization curves and electrochemical impedance spectroscopy (EIS) methods. NCA based Ionomers showed a maximum of 99% inhibition efficiency. The antifouling study was carried out in sea water for a period of six months.