Extracts of curcumin-incorporated hybrid sol–gel coatings for the corrosion mitigation of mild steel in 0.5 M HCl / Nur 'Amirah Ishak in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 17, N° 6 (11/2020)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 17, N° 6 (11/2020) . - p. 1515-1535 Titre : Extracts of curcumin-incorporated hybrid sol–gel coatings for the corrosion mitigation of mild steel in 0.5 M HCl Type de document : texte imprimé Auteurs : Nur 'Amirah Ishak, Auteur ; Tuan Sherwyn Hamidon, Auteur ; Tan Zi-Hui, Auteur ; M. Hazwan Hussin, Auteur Année de publication : 2020 Article en page(s) : p. 1515-1535 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Anticorrosifs Anticorrosion Caractérisation Curcumine Extraction (chimie) Hydrophobie Métaux -- Revêtements protecteurs Sol-gel, Procédé Surfaces -- Analyse Index. décimale : 667.9 Revêtements et enduits Résumé : Curcumin was extracted from turmeric using two solvents (ethanol and water), doped with hybrid (TEOS-APTES) sol–gel coatings for the corrosion protection of mild steel. Characterization of curcumin extracts was carried out using integral analyses, namely FTIR, NMR, DSC, TGA, total phenolic content, and antioxidant assay. Corrosion-inhibitive ability of coatings doped with curcumin extracts (25, 50, 75, and 100 ppm) were evaluated via electrochemical impedance spectroscopy and potentiodynamic polarization measurements. It was evident that sol–gel incorporated with 100 ppm ethanol extract provided more than 90% of inhibition efficiency. Coated mild steel surfaces were characterized using FTIR, SEM/EDX, and water contact angle analysis where coatings incorporated with curcumin extracts were found to be hydrophobic (θ = 100.2°). Note de contenu : - EXPERIMENTAL : Collection of turmeric - Extraction of curcumin - Characterization of curcumin - Corrosion inhibition analysis - Surface analyses - RESULTS AND DISCUSSION : Fourier transform infrared (FTIR) spectroscopy measurement - Nuclear magnetic resonance (NMR) spectroscopy measurement - Thermal gravimetric analysis (TGA) measurement - Differential scanning calorimetry (DSC) measurement - Total phenolic content measurement - Ferric reducing power measurement - High-performance liquid chromatography (HPLC) measurement - Corrosion inhibition analysis results DOI : https://doi.org/10.1007/s11998-020-00364-x En ligne : https://link.springer.com/content/pdf/10.1007/s11998-020-00364-x.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=34957 [article]

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