journal article·2026-02Open access

Sustainable hydrophobic and strength film coatings for corrosion protection: Lignin biopolymer as an attractive film former on carbon steel- a way towards green chemistry

Soukaina. Akachar, Youssef. Zarki, Hafssa. Majdoub, Leila. Azaryouh, Mounir. El Achaby, Ahmed. Ait Aghzzaf, Khalid. Draoui

Synthetic Metals· Volume 317

Abstract

Lignin, an abundant byproduct of biomass processing, holds great promise for sustainable material applications. As a novel stride, in this study, pure lignin was extracted from raw Alfa fibers through a single, eco-friendly alkali treatment and assessed as both a green corrosion inhibitor and a coating precursor for carbon steel (CS). Electrochemical techniques revealed that the synthesized Alkali lignin (S-AL) achieved 92.9 % inhibition efficiency, surpassing commercial Alkali lignin (C-AL) by forming an adsorbed thin organic barrier on the CS surface. Harnessing this property, S-AL was spray-deposited into a uniform film whose high hydrophobicity (92.11°), low water uptake (10 %), and strong adhesion translated into superior long-term corrosion resistance. Structural and surface analyses (XRD, FT-IR, TGA, SEM-EDS, Zeta potential, and particle size) confirmed the purity of S-AL and the integrity of the coating. This waste-to-coating approach delivers a high-performance, sustainable alternative for steel protection.
Source: openalex_inverted_index · Quality: baseline

Research context

OpenAlex topics: Corrosion Behavior and Inhibition · Lignin and Wood Chemistry · Electrodeposition and Electroless Coatings

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

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