Year: 2026 | Month: October | Volume: 13 | Issue: 10 | Pages: 383-391
DOI: https://doi.org/10.52403/ijrr.20261034
Green Corrosion Inhibitors and Anticorrosive Coatings from Inhibition Mechanisms to Sustainable Coating Design
Pooja Ravandale1, Mayuri Nikam1
1Department of Chemistry, SSVP Sansthas’s Late Karmveer Dr P R Ghogrey Science College, Dhule, Deopur
Corresponding Author: Pooja Ravandale
ABSTRACT
Developing corrosion protection with lower environmental burdens requires both effective interfacial chemistry and durable coating architecture. This narrative review examined key studies on plant extracts, polyphenols, amino acids, biomass-derived ionic liquids, biopolymers, and renewable resin components, with an emphasis on their integration into anticorrosive coatings. We assessed published evidence by substrate, electrolyte, concentration, film thickness, exposure duration, and measurement method. Adsorption, metal-ion complexation, barrier formation, and controlled inhibitor release explained complementary protection routes. However, inhibition efficiencies measured in acidic solutions did not establish coating durability in chloride environments. Tannic acid exemplified this context dependence: it could inhibit corrosion, accelerate attack at insufficient concentration, or form a surface layer that required additional barrier protection. Encapsulation improved inhibitor delivery, whereas lignin and vegetable-oil resins offered routes to replace conventional binder components. The strongest coating evidence combined prolonged exposure with impedance, adhesion or defect assessment. Biomass origin and waterborne processing alone did not establish low toxicity or a favourable life cycle. Progress therefore depended on reproducible feedstocks, compatible formulations, release and leachate measurements, and validation under relevant service conditions. Green corrosion protection emerged as a property of the complete material system and its service history, rather than an intrinsic label attached to a natural ingredient.
Keywords: Green corrosion inhibitor; anticorrosive coating; tannic acid; chitosan; lignin; controlled release; sustainable materials.
[PDF Full Text]