UV-Curable Polyurethane-Acrylate-Ag/TiO<sub>2</sub> Nanocomposites with Superior UV Light Antibacterial Activity
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Polyurethane acrylate (PUA)-Ag/TiO<sub>2</sub> nanocomposites were synthesized via in-situ polymerization. The well-dispersed Ag/TiO<sub>2</sub> nanorods (NRs) serve as photoinitiator. Meanwhile, the PUA-Ag/TiO<sub>2</sub> nanocomposite films exhibit superior activity towards the photocatalytic degradation of <i>Escherichia coli (E. Coli)</i> under UV light. The excellent UV-curing and antibacterial activity can be ascribed to the synergistic effect of Ag and TiO<sub>2</sub>, which promotes the effective electron/holes separation and thus generates various reactive species. Thin films with these nanoparticles are more hydrophilic after UV illumination. And the antibacterial mechanism of the UV-Curable Polyurethane-Acrylate-Ag/TiO2 Nanocomposites was proposed.
