나노 은을 광증착시킨 폴리(에틸렌 테레프탈레이트)/나노-TiO2 복합체의 항균특성 연구

• Published in: 한국섬유공학회지 Vol. 49; no. 6; pp. 377 - 382
• Main Authors: 조성민, Seong Min Jo, 지광환, Kwang Hwan Jhee, 김정현, Jung Hyun Kim, 권오경, Oh Kyung Kwaon, 임상규, Sang Kyoo Lim, 민병길, Byung Gil Min
• Format: Journal Article
• Language: Korean
• Published: 한국섬유공학회 30.12.2012
• Subjects: antibacterial activity; nano TiO2; PET; Photodeposition by UV irradition; silver; 섬유공학
• ISSN: 1225-1089; 2288-6419

Nanocomposite films of poly(ethylene terephthalate)(PET) and nano titania(Ti02) were prepared by melt compounding with a twin-screw extruder followed by hot pressing for the purpose of investigating antibacterial activ-ity. FE-SEM, EDS and XRD measurements confirmed that nano Ti02 was successfully dispersed at the level of indi-vidual particles in the PET matrix. Silver was introduced through photocatalytic reduction by nano Ti02 under UV (254 nm) irradiation to the nanocomposite films after being immersed in aqueous solution AgNO3 (100 ppm Ag ion). Even at 1 wt% of Ti02 content, the nanocomposite with silver photodeposition exhibited strong antimicrobial activity against Klebsiella pneumoniae and Staphylococcus aureus in measurement by shaking flask method.