| 초록 |
Antimicrobial PVA films containing various photo-sensitizers were prepared, and their structural and photoactive properties were investigated. 1-Hydroxycyclohexyl phenyl ketone, 4'-Hydroxyacetophenone, 2-Methyl-4'-(methylthio)-2-morpholinopropiophenone, 4,4'-Bis(dimethylamino)-benzophenone, Thioxanthen-9-one, and 4,4'-Dihydroxybenzophenone were selected as photosensitizing additives. Effect of types of photo-sensitizers, their concentration, and their combination in mixture on UV absorption and radical formation, thermal stability, and structural properties of prepared films were observed by DSC, UV-Vis, XRD, ESR. As results, under optimum condition, PVA film with the mixture of 1-Hydroxycyclohexyl phenyl ketone, 4'-Hydroxyacetophenone, and 4,4'-Bis(dimethylamino)-benzophenone showed highly sensitive photoactive properties over the wide range of UV wavelength. This research was supported by National Research Foundation of Korea (Project No. 2010-0008047) |
