A promising ternary nanohybrid of Copper@Zinc oxide intercalated with polyaniline for simultaneous antistatic and antibacterial applications / Abdolreza Mirmohseni in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 16, N° 5 (09/2019)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 16, N° 5 (09/2019) . - p. 1411-1422 Titre : A promising ternary nanohybrid of Copper@Zinc oxide intercalated with polyaniline for simultaneous antistatic and antibacterial applications Type de document : texte imprimé Auteurs : Abdolreza Mirmohseni, Auteur ; Maryam Azizi, Auteur ; Mir Saeed Seyed Dorraji, Auteur Année de publication : 2019 Article en page(s) : p. 1411-1422 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Antibactériens Antistatiques Cuivre Essais d'adhésion Matériaux hybrides Oxyde de zinc Polymères en émulsion Polyuréthanes Résistance à l'abrasion Revêtements organiques Index. décimale : 667.9 Revêtements et enduits Résumé : In this study, a facile and cost-effective approach has been developed for fabricating antibacterial and antistatic waterborne polyurethane (WPU)-based coatings by using Polyaniline-Copper@Zinc oxide (P-Cu@ZnO) ternary nanohybrid as a multifunctional additive. The solid-state reaction of copper acetate and zinc acetate salts led to the synthesis of copper clusters on the ZnO nanoparticles (Cu@ZnO). The obtained Cu@ZnO nanoparticles were intercalated with polyaniline (PANI) chains to prepare the P-Cu@ZnO nanohybrid. FTIR, XRD, UV–Vis, and FESEM analyses were used to characterize the structural, crystallographic, and morphological properties of the synthesized nanohybrid. Adding P-Cu@ZnO nanohybrid to the WPU matrix not only improved adhesion strength of the coatings but also enhanced their scratch resistance compared to the pristine WPU coating. Moreover, incorporation of the obtained nanohybrid into the WPU coatings caused electrical surface resistance of the obtained coatings to reach 1.2 × 10+8 Ω/sq, so, these coatings gained the optimum electrical surface resistance to be counted as an antistatic coating. Also, the results of the colony counting test showed that the modified coatings could reduce the Staphylococcus aureus and Escherichia coli bacteria growth by about 86% and 74%, respectively. Note de contenu : - EXPERIMENTAL : Materials - Prepration of copper decorated zinc oxide (Cu@ZnO) - Synthesis of pure polyaniline (PANI) and polyaniline-copper@zinc oxyde ternary nanohybrid (P-CU@ZnO) - Preparation of waterborne polyurethane dispersion (WPUs) - Preparation of modified waterborne polyurethane coatings - Characterization of polyaniline-copper@Zinc oxide ternary nanohybrid - Confirmation of the presence of Cu clusters in Cu@ZnO nanoparticles by UV-vis study - The proposed mechanism for the formation of copper clusters on the zinc oxide - Evaluation of the coatings' adhesion strength and scratch resistance - Antistatic behavior of waterborne polyurethane based coatings - Investigating antibacterial activity of the waterborne polyurethane coatings DOI : 10.1007/s11998-019-00223-4 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-019-00223-4.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=33021 [article]

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