Abstract

Sini Varghese Cheruvathur¹, Joby Thomas Kakkassery*², Vinod Raphael Palayoor³, Binsi M. Paulson⁴ and Ragi Kooliyat⁵

DOI : http://dx.doi.org/10.13005/ojc/350223

The corrosion protection efficacy of electrochemically synthesized poly(2-aminobenzenesulphonic acid) (P2ABSA) on carbon steel in 1.0 M HCl was investigated by electrochemical impedance spectroscopy, Tafel polarisation, scanning electron microscopy (SEM) and FT-IR spectral studies. The polymeric coating was prepared on the steel surface using cyclic voltammetry. Investigations established that P2ABSA effectively prevent the metal dissolution in HCl medium. Polarisation studies revealed that this polymer hinder both anodic and cathodic process of corrosion appreciably. The structures of the chemically and electrochemically synthesised polymers were compared using IR spectroscopy.  Morphology of the steel surface confirmed the intact response of P2ABSA on steel surface treated with HCl.

Corrosion; Electrochemical Impedance Spectroscopy; Poly(2-Aminobenzenesulphonic Acid); Tafel Plots,

[ View HTML Full Text]