In this study, the relative antibac

In this study, the relative antibacterial activity of thin film of PET/PBS blend at the ratio of 90:10 with TiO2 or
ZnO at 1 and 2% wt were studied by dynamic shake flask test method. E.coli is gram-negative bacteria while
S.aureus is gram-positive bacteria. Both E.coli and S.aureus had different components on their cell walls. Reactive
oxygen species were created by chemical mechanism (Fig. 7) to execute the antibacterial activity of E.coli and
S.aureus in the presence of TiO2 and ZnO [5, 13]. Such oxygen species released from the surface of ZnO by both
UV and visible light activation could cause mortality to those microorganisms. Electron-hole pairs (e