Title of article :
Corrosion Inhibition Properties of Sulfonated Polyaniline-Poly(Vinyl Alcohol) Composite on Mild Steel
Author/Authors :
Ullah ، Wahid National Center of Excellence in Physical Chemistry - University of Peshawar , Gul ، Hajera National Center of Excellence in Physical Chemistry - University of Peshawar , Ullah ، Rizwan National Center of Excellence in Physical Chemistry - University of Peshawar , Gul ، Salma Department of Chemistry - Women University , Ali Shah ، Anwar ul HaqAnwar Institute of Chemical Sciences - University of Peshawar , Bilal ، Salma National Center of Excellence in Physical Chemistry - University of Peshawar
Abstract :
In this work, we demonstrate water-based corrosion inhibition properties of engineered sulfonated polyaniline molecules on poly(vinyl alcohol), PANI-PVA, for mild steel. The corrosion-inhibition performances were evaluated using potentiodynamic polarization in a salty corrosive 3 % NaCl solution. The anti-corrosion coating based on these composite materials displays barrier properties against corrosion-causing agents and shows a corrosion protection efficiency of 84.39 %, compared with uncoated. The material showed a lower value of corrosion current (Icorr) which is 2.56 μA/cm2 and a positive shift in corrosion potential (Ecorr), -0.426 V, in comparison with uncoated steel. Open Circuit Potential (OCP) Studies and electrochemical impedance (EIS) were also carried out to check the corrosion protection ability of the material. OCP studies, Nyquist plot, and Bode plots showed that the synthesized PANI-PVA possess a corrosion protection ability on mild steel against the corrosive species.
Keywords :
: Poly (vinyl alcohol) , Polyaniline , Corrosion protective coating , corrosion potential , corrosion current
Journal title :
Iranian Journal of Chemistry and Chemical Engineering (IJCCE)
Journal title :
Iranian Journal of Chemistry and Chemical Engineering (IJCCE)
