Synthesis of waterborne polyurethane–silver nanoparticle antibacterial coating for synthetic leather / Xiaohui Zhang in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 15, N° 2 (03/2018)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 15, N° 2 (03/2018) . - p. 415-423 Titre : Synthesis of waterborne polyurethane–silver nanoparticle antibacterial coating for synthetic leather Type de document : texte imprimé Auteurs : Xiaohui Zhang, Auteur ; Wei Wang, Auteur ; Dan Yu, Auteur Année de publication : 2018 Article en page(s) : p. 415-423 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Argent Charges (matériaux) Cuir synthétique Nanoparticules Nanoparticules -- Synthèse Polymères en émulsion Polyuréthanes Revêtements en phase aqueuse Tests d'efficacité Index. décimale : 667.9 Revêtements et enduits Résumé : An antibacterial coating composed of silver nanoparticles and waterborne polyurethane was synthesized for use on synthetic leather. In this study, silver nanoparticles were prepared and used as nanofiller to impart antibacterial property. Silver nanoparticles were synthesized by using poly(vinyl pyrrolidone) as dispersant and sodium borohydride (NaBH4) as reducing agent. Silver nanoparticles were characterized by transmission electron microscopy (TEM), Fourier-transform infrared (FTIR) spectroscopy, and X-ray diffraction (XRD) analysis. The optimum dispersant was selected according to the zeta potential of dispersions. Waterborne polyurethane was synthesized by using isophorone diisocyanate, 2-bis(hydroxymethyl)propionic acid, triethylamine, and polytetramethylene ether glycol. Waterborne polyurethane–silver antibacterial coating was obtained by ultrasonic dispersion, and then cast on the surface of synthetic leather. The antibacterial property and coating adhesion were investigated. The results showed silver nanoparticles homogeneously dispersed in waterborne polyurethane and adhesion reaching grade 4. Antibacterial testing showed bacterial reduction of 99.99% for Escherichia coli and 87.5% for Staphylococcus aureus. Note de contenu : - EXPERIMENTAL : Materials - Synthesis of silver nanoparticles - Preparation of waterborne polyurethane - Preparation of waterborne polyurethane–silver antibacterial coating - Characterization - RESULTS AND DISCUSSION : Synthesis and characterization of silver nanoparticles - Effect of amount of silver nanoparticles on particle size and stabilization effect of waterborne polyurethane - Morphology - Adhesion results - Antibacterial testing DOI : 10.1007/s11998-017-9997-3 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-017-9997-3.pdf Format de la ressource électronique : pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=30300 [article]

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