Bio Corrosion and Microbial Protection of Carbon Steel: Integrating Lawsonia inermis L Extract into Styrene-Acrylic Paints | ||
| Egyptian Journal of Chemistry | ||
| Articles in Press, Accepted Manuscript, Available Online from 05 October 2025 | ||
| Document Type: Review Articles | ||
| DOI: 10.21608/ejchem.2025.419763.12277 | ||
| Authors | ||
| Ayman M. Rabie1; F. Abdelhai2; Ahmed I. Ismael3; lobna A. khorshed4; Abdullah Mohamed Abdo* 5 | ||
| 1Chemistry Department, Faculty of Science, Al-Azhar University, Nasr City, 11884, Cairo, Egypt | ||
| 2Chemistry Department, Faculty of Science, Al-Azhar University, Nasr City, 11884, Cajro, Egypt. | ||
| 3Polymer and pigments Department, National Research Center , 33 El Bohoth Street, Dokki, P.O. Box,12622, Giza, Egypt | ||
| 4Physical Chemistry Department, National Research Center , 33 El Bohoth Street, Dokki, P.O. Box,12622, Giza, Egypt | ||
| 5Botany and Microbiology Department, Faculty of Science, Al-Azhar University, Nasr City, 11884, Cairo, Egypt. | ||
| Abstract | ||
| Carbon steel is widely used in industrial applications but suffers from corrosion, leading to substantial economic losses and environmental hazards. Conventional corrosion inhibitors, including heavy metal-based compounds such as chromates and phosphates, pose significant toxicity and environmental concerns, necessitating the development of sustainable and eco-friendly alternatives. This review explores the potential of Lawsonia inermis L. (henna) extract as a green corrosion and microbiological inhibitor for carbon steel, particularly when incorporated into styrene-acrylic coatings. Henna contains a diverse range of bioactive compounds, including lawsone, flavonoids, tannins, and polyphenols, which absorb onto steel surfaces, forming a protective hydrophobic layer that reduces metal oxidation and degradation. Additionally, its strong antimicrobial and biofilm-disrupting properties help prevent microbial-induced corrosion (MIC), a significant challenge in marine, industrial, and underground environments. Styrene-acrylic coatings, known for their excellent adhesion, durability, and chemical resistance, provide a suitable matrix for incorporating bio-based inhibitors, enhancing their effectiveness and longevity. This review systematically synthesizes findings on the dual role of L. inermis as both a corrosion and microbiological inhibitor when integrated into styrene-acrylic matrices—a gap not comprehensively addressed in earlier literature. By condensing experimental evidence and highlighting challenges in standardization, stability, and large-scale applicability, this review clarifies pathways for developing hybrid and nano-enhanced coatings. Thus, it contributes a concise and targeted perspective on sustainable strategies that align with global initiatives toward eco-friendly corrosion and microbiological protection. | ||
| Keywords | ||
| Corrosion protection; Carbon steel; Green inhibitors; Lawsonia inermis; Styrene-acrylic coatings; Microbial-induced corrosion (MIC) | ||
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