Haddadou, Imane, Ami, Amina, Gagnon, Jonathan et Ouellet-Plamondon, Claudiane M..
2025.
« The antibacterial and anticorrosion activity of sodium alginate-chitosan cryogels and hydrogels loaded with Satureja montana essential oil and Monarda didyma hydrolate ».
Materials Today Chemistry, vol. 46.
Compte des citations dans Scopus : 2.
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Résumé
This study develops chitosan-alginate (CS/SA) cryogels incorporating Satureja montana essential oil (EO) and Monarda didyma hydrolate for antibacterial and anticorrosion applications. Cryogels with a CS:SA ratio of 3:1 achieved 78.7 % encapsulation efficiency (EE), driven by electrostatic interactions between chitosan’s protonated amine (-NH3+) and alginate’s carboxyl (-COO-) groups, forming a dense polyelectrolyte network that entraps EO (FTIR/SEM evidence). Structural analysis revealed alginate-enhanced porosity (50–200 μm pores) and EOinduced densification, critical for controlled release. The cryogels inhibited Staphylococcus aureus (58.8 ± 2.3 %) and Pseudomonas aeruginosa (41.7 ± 3.0 %) and suppressed corrosion-associated strains: acid-producing bacteria (APB, 91.92 ± 0.16 %) and thiosulfate-reducing bacteria (BTR, 97.76 ± 0.27 %). Hydrolate-EO synergy enhanced anticorrosion performance, with CS/SA (3:1) cryogels retaining 90 % zinc on steel surfaces. This work demonstrates a sustainable strategy for dual-functional coatings, leveraging natural extracts to address industrial and environmental challenges.
| Type de document: | Article publié dans une revue, révisé par les pairs |
|---|---|
| Professeur: | Professeur Ouellet-Plamondon, Claudiane |
| Affiliation: | Génie de la construction |
| Date de dépôt: | 08 mai 2025 15:06 |
| Dernière modification: | 12 mai 2025 18:17 |
| URI: | https://espace2.etsmtl.ca/id/eprint/30895 |
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