title: Characterization and antimicrobial performance of nano silver coatings on leather materials.
abstract: In this study, the characterization and the antimicrobial properties of nano silver (nAg) coating on leather were investigated. For this purpose, turbidity, viscosity and pH of nAg solutions prepared by the sol-gel method were measured. The formation of films from these solutions was characterized according to temperature by Differential Thermal Analysis-Thermogravimetry (DTA-TG) equipment. The surface morphology of treated leathers was observed using Scanning Electron Microscopy (SEM). The antimicrobial performance of nAg coatings on leather materials to the test microorganisms as Escherichia coli , Staphylococcus aureus , Candida albicans and Aspergillius niger was evaluated by the application of qualitative (Agar overlay method) and quantitative (percentage of microbial reduction) tests. According to qualitative test results it was found that 20 μg/cm (2) and higher concentrations of nAg on the leather samples were effective against all microorganisms tested. Moreover, quantitative test results showed that leather samples treated with 20 μg/cm (2) of nAg demonstrated the highest antibacterial activity against E. coli with 99.25% bacterium removal, whereas a 10 μg/cm (2) concentration of nAg on leather was enough to exhibit the excellent percentage reduction against S. aureus of 99.91%. The results are promising for the use of colloidal nano silver solution on lining leather as antimicrobial coating.
authors.affiliation: Leather Engineering Department, Engineering Faculty, Ege University, Bornova, Izmir, Turkey.
authors.forename: N
authors.initials: N
authors.lastname: Lkhagvajav
authors.affiliation: Leather Engineering Department, Engineering Faculty, Ege University, Bornova, Izmir, Turkey.
authors.forename: M
authors.initials: M
authors.lastname: Koizhaiganova
authors.affiliation: Basic and Industrial Microbiology Department, Basic Science Faculty, Ege University, Bornova, Izmir, Turkey.
authors.forename: I
authors.initials: I
authors.lastname: Yasa
authors.affiliation: Department of Metallurgical and Materials Engineering, Faculty of Engineering, Dokuz Eylul University, Buca, Izmir, Turkey. ; Center for Production and Applications of Electronic Materials, Dokuz Eylul University, Buca, Izmir, Turkey.
authors.forename: E
authors.initials: E
authors.lastname: Çelik
authors.affiliation: Leather Engineering Department, Engineering Faculty, Ege University, Bornova, Izmir, Turkey.
authors.forename: Ö
authors.initials: Ö
authors.lastname: Sari
mesh_terms: D000890:Anti-Infective Agents / Q000494:pharmacology*; D001419:Bacteria / Q000187:drug effects*; D058491:Bacterial Load; D055598:Chemical Phenomena; D005658:Fungi / Q000187:drug effects*; D006863:Hydrogen-Ion Concentration; D008855:Microscopy, Electron, Scanning; D049329:Nanostructures; D012834:Silver / Q000494:pharmacology*; D013499:Surface Properties
chemical_list: D000890:Anti-Infective Agents; D012834:Silver
keywords: antimicrobial activity; coating; lining leather; nano Ag