Corrosion control of phenylthiourea polymers on aluminium in alkaline medium

Abstract

Abstract Simple phenylthiourea compounds are known for their high solubility in alkaline medium and for good corrosion control. The monomer N ‐(4‐hydroxy‐3‐methoxybenzal)‐ N ′‐(4′‐hydroxyphenyl) thiourea was condensed with pimeloylchloride and azeloylchloride through inter‐facial polycondensation method to synthesize the polymers. The polymers were dissolved in 2 N sodium hydroxide and their corrosion controlling efficiency on aluminium was studied through AC impedance and potentiodynamic polarization methods.