TiO2 나노입자를 함유한 PLA 필름의 탈취성과 항균성
The Deodorization and Antibacterial Activities of PLA Films Embedded with TiO2 Nanoparticles
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초록
The effects of TiO2 contents and UV irradiation treatment on the surface properties of PLA films embedded with TiO2 nanoparticle were investigated. Whereas UV irradiation decreased reflectance of the treated PLA films proportionally with increasing UV energy, the reflectance of PLA/TiO2 films increased with increasing UV energy. The UV irradiation treatment caused PLA/TiO2 blend films more polar as indicated in the generation of new carbonyl group and decrease in zeta potentials, which was more pronounced with the introduction of TiO2. Upon UV irradiation, TiO2 particles appeared on the film surface as observed in SEM images. The PLA/TiO2 blend films showed photocatalytic properties such as photobleaching of methylene blue, deodorization of ammonia and antimicrobial activity in comparison with pure PLA films.
Abstract
The effects of TiO2 contents and UV irradiation treatment on the surface properties of PLA films embedded with TiO2 nanoparticle were investigated. Whereas UV irradiation decreased reflectance of the treated PLA films proportionally with increasing UV energy, the reflectance of PLA/TiO2 films increased with increasing UV energy. The UV irradiation treatment caused PLA/TiO2 blend films more polar as indicated in the generation of new carbonyl group and decrease in zeta potentials, which was more pronounced with the introduction of TiO2. Upon UV irradiation, TiO2 particles appeared on the film surface as observed in SEM images. The PLA/TiO2 blend films showed photocatalytic properties such as photobleaching of methylene blue, deodorization of ammonia and antimicrobial activity in comparison with pure PLA films.
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