Effects of hydrotalcite intercalated with corrosion inhibitor on cathodic disbonding of epoxy coatings / Thi Xuan Hang To in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 12, N° 2 (03/2015)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 12, N° 2 (03/2015) . - p. 375-383 Titre : Effects of hydrotalcite intercalated with corrosion inhibitor on cathodic disbonding of epoxy coatings Type de document : texte imprimé Auteurs : Thi Xuan Hang To, Auteur ; Nguyen Thuy Duong, Auteur ; Anh Truc Trinh, Auteur ; Hoang Thai, Auteur ; Dinh Thi Mai Thanh, Auteur ; Siriporn Daopiset, Auteur ; Anothai Boonplean, Auteur Année de publication : 2015 Article en page(s) : p. 375-383 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Anticorrosifs Anticorrosion Caractérisation Décollement cathodique (revêtement) Epoxydes Essais d'adhésion Essais de brouillard salin Hydrotalcites Revêtements protecteurs Index. décimale : 667.9 Revêtements et enduits Résumé : In this study, zinc aluminum hydrotalcite intercalated with 2-benzothiazolylthio-succinic acid (BTSA) as a container of corrosion inhibitor was prepared and incorporated in an epoxy coating. The HT-BTSA obtained was characterized using infrared spectroscopy and X-ray diffraction. BTSA release from HT-BTSA in 0.5 M NaCl solution was investigated using UV–Vis spectroscopy. The corrosion protection performance of the epoxy coating containing HT-BTSA was evaluated and compared to the pure epoxy coating and the epoxy coating containing HT by cathodic disbonding test, electrochemical impedance spectroscopy, salt spray test, and adhesion measurement. It was shown that the BTSA was intercalated in hydrotalcite and its loading was about 33.5%. The BTSA release from HT-BTSA increased with the pH of the NaCl solution. It was also shown that the presence of HT or HT-BTSA in epoxy coating improved the resistance to cathodic disbonding and the adhesion of the epoxy coating. Corrosion protection performance of epoxy coating containing HT-BTSA was higher than that of epoxy coating containing HT. Note de contenu : - MATERIALS AND METHODS : Materials - Preparation of hydrotalcite - Preparation of hydrotalcite intercalated with BTSA - Preparation of epoxy coatings - Analytical characterizations - BTSA release from HT-BTSA - Electrochemical characterization - Salt spray test - Adhesion measurement - RESULTS AND DISCUSSION : Characterization of HT-BTSA - Release of BTSA from HT-BTSA - Cathodic disbonding test - Salt spray test - Adhesion measurements DOI : 10.1007/s11998-014-9642-3 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-014-9642-3.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=23661 [article]

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Influence of curcumin-modified graphene oxide on antibacterial properties of polyurethane coating / Nguyen Thuy Duong in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 18, N° 5 (09/2021)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 18, N° 5 (09/2021) . - p. 1379-1387 Titre : Influence of curcumin-modified graphene oxide on antibacterial properties of polyurethane coating Type de document : texte imprimé Auteurs : Nguyen Thuy Duong, Auteur ; Van Cuong Bui, Auteur ; Bo An Tran, Auteur ; Thanh Thao Phan, Auteur ; Ke Oanh Vu, Auteur ; Anh Son Nguyen, Auteur ; Anh Truc Trinh, Auteur ; Thi Chinh Tang, Auteur ; Thi Xuan Hang To, Auteur Année de publication : 2021 Article en page(s) : p. 1379-1387 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Antibactériens Caractérisation Curcumine Essais (technologie) Oxyde de graphène Polyuréthanes Revêtements -- Propriétés physiques Revêtements organiques Index. décimale : 667.9 Revêtements et enduits Résumé : This study aims to prepare antibacterial coatings based on polyurethane and curcumin-modified graphene oxide. Curcumin-modified graphene oxide (GO-CU) as an antibacterial agent was prepared using the adsorption method. GO-CU was incorporated in polyurethane (PU) coatings at concentrations of 0.1 and 0.5 wt%. Synthesized GO-CU was characterized by Fourier transform infrared spectroscopy, UV–Vis spectroscopy, transmission scanning electron microscopy, and zeta potential measurement. Curcumin content in GO-CU was determined by thermogravimetric analysis. Antibacterial properties of GO-CU powder and PU coatings containing GO-CU were investigated by counting the colony-forming unit (CFU) of Escherichia coli (E. coli) strain. The results showed that curcumin was attached on GO-CU surface and curcumin content in GO-CU was about 32.9%. GO-CU provided a higher antibacterial effect against E. coli than GO. The antibacterial efficiency of PU coatings containing 0.1 wt% GO-CU was 85.8%; however, the increase in GO-CU concentration did not significantly increase the antibacterial efficiency of PU coating. Note de contenu : - EXPERIMENTAL : Materials - Modification of graphene oxide by curcumin - Preparation of polyurethane coatings containing GO-CU - Analytical characterization - Antibacterial test of GO-CU - Antibacterial test of PU coatings containing GO-CU - RESULTS AND DISCUSSION : Characterization of Go-CU - Morphology of PU coating containing GO-CU - Physical properties of PU coating - Antibacterial ability of GO-CU and PU coating loading GO-CU - Table 1 : Physical properties of coatings DOI : https://doi.org/10.1007/s11998-021-00502-z En ligne : https://link.springer.com/content/pdf/10.1007/s11998-021-00502-z.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=36440 [article]

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