Electrochemical and Surface Analytical Study on the Role of Poly(butylene-succinate)-L-proline during Corrosion of Mild Steel in 1 M HCl

Chemistry

卷:2

Elizabeth M. Makhatha¹  George M. Tsoeunyane¹ 

[1] Department of Metallurgy, Faculty of Engineering and Built Environment, DFC Campus 1, University of Johannesburg, Johannesburg 2094, South Africa;

关键词: potentiodynamic polarization;    electrochemical impedance spectroscopy;    inhibition mechanism;    surface morphology;    mild steel;    Langmuir adsorption isotherm;   

DOI  :  10.3390/chemistry2040057

来源: DOAJ

【 摘 要 】

The synthesis and corrosion inhibition performance of poly(butylene-succinate)-L-proline (PBSLP) prepared by solution polymerization are reported. PBSLP was characterized by FTIR, XRD, and SEM/energy dispersive X-ray (EDX). PBSLP was used to protect mild steel in 1 M hydrochloric acid. An SEM and an atomic force microscope (AFM) were used to characterize the surface morphology of the mild steel coupons. Potentiodynamic polarization and electrochemical impedance spectroscopy (EIS) were used to characterize the inhibition mechanism of PBSLP, and the inhibitor was a mixed-type corrosion inhibitor with a maximum corrosion inhibition efficiency of 93.0%. Adsorption studies revealed the adsorption of PBSLP to be a monolayer process and therefore, obeyed the Langmuir isotherm model.

【 授权许可】

Unknown