Effect of water-soluble chitosan on the electrochemical corrosion behaviour of mild steel

Fayomi, O. S. I and AKANDE, I.G and Oluwole, O. O. and Daramola, D. (2018) Effect of water-soluble chitosan on the electrochemical corrosion behaviour of mild steel. Chemical Data Collections, 17 (18). pp. 321-326.

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Abstract

This article outlines the role of chitosan as a potent inhibitor on mild steel in 3.65% NaCl. The protective ability of chitosan was evaluated by potentiodynamic polarization (PP) mea- surements in 36.5% sodium chloride medium. The outcome of the experiment shows that mild steel in sodium chloride solution containing chitosan nanoparticles exhibit better cor- rosion protection than mild steel in NaCl solution alone because the anodic and cathodic site of the steel were blocked by chitosan nanoparticles, thereby minimising the incursion of the salt solution by forming a thin film on the mild steel surface. The inhibitive effi- ciency of chitosan nanoparticles was also studied using weight loss. The weight loss by mild steel in NaCl solution was found to be higher than those immersed in NaCl-chitosan nanoparticulate solutions. The loss in weight reduces as the concentration of chitosan nanoparticles increases, indicating the fortifying ability of chitosan nanoparticles. Results obtained show that chitosan could offer inhibition efficiency above 90%. The mixed inhibi- tion characteristic of chitosan was demonstrated by the Tafel curve. The Langmuir isotherm possesses an R 2 value of 0.9957 indicating the effectiveness of chitosan as an inhibitor

Item Type:	Article
Subjects:	T Technology > T Technology (General) T Technology > TJ Mechanical engineering and machinery
Divisions:	Faculty of Engineering, Science and Mathematics > School of Engineering Sciences
Depositing User:	Mrs Hannah Akinwumi
Date Deposited:	31 Aug 2020 10:27
Last Modified:	31 Aug 2020 10:27
URI:	http://eprints.covenantuniversity.edu.ng/id/eprint/13562

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