Enhancing Durability and Adhesionof Moringa Oleifera as Green Corrosion Inhibitor on Mild Steel using Lignin-Based Polymer from Coconut Shell

Abstract

This investigation explores the potential of a lignin-based polymer derived from coconut shells and Moringa oleifera extract as sustainable, natural corrosion inhibitors for mild steel. The study aims to develop novel, eco-friendly corrosion protection coatings by synergistically combining these two components. The mild steel used for this research are Thermo Mechanically Treated (TMT) bars having carbon content percentage range from 0.18 - 0.25%, procured from Abuja Steel Mill Limited, fresh moringa leaves and mature coconut shell from within Minna. A comprehensive characterization of the lignin-based polymer and Moringa oleifera extract was conducted to elucidate their chemical composition and properties. Coatings incorporating varying concentrations of these compounds were formulated to assess their corrosion inhibition efficacy. The developed coatings were subjected to rigorous adhesion testing and corrosion resistance evaluation. The results demonstrated an Inhibition Efficiency (IE%) of 91.79%, indicating the promising potential of Moringa oleifera and lignin-based polymer as sustainable alternatives. These findings suggest that the proposed approach holds significant promise for the development of durable and environmentally sustainable corrosion protection solutions for mild steel applications.