期刊
SURFACE & COATINGS TECHNOLOGY
卷 205, 期 2, 页码 465-469出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.surfcoat.2010.07.013
关键词
Antibacterial coating; Polymethyl methacrylate (PMMA); Plasma pre-treatment; TiO2 film; Natural light sterilization
资金
- Minister of Health of China
- Department of Health and Education of Fujian province [WKJ2005-2-003, JAO5187]
- Program for Changjiang Scholars and Innovative Research Team in University [PCSIR0818]
- Natural Science Foundation of Fujian Province [2008H0089, 2009J01025]
The antibacterial properties of polymethyl methacrylate (PMMA) are enhanced by coating with TiO2 films. The transparent TiO2 films on plasma-treated PMMA are prepared by sol-gel dip coating. The modified surfaces are characterized by XRD, AFM, ATR-FTIR. SEM, UV-vis spectroscopy, and contact angle measurements Finally, the antibacterial properties are evaluated using the method of plate-counting of Staphylococcus aureus (gram positive) and Escherichia colt (gram negative). It is found that the anatase-TiO2 film is well-conglutinated on PMMA surface with an average crystallite size of ca. 4 nm. The as-prepared TiO2/PMMA exhibits excellent photoinduced antibacterial effect for the sterilization of bacteria under indoor natural light, and about 100% of both bacteria are inactivated within 2 h intimation. Compared to PMMA without any treatment, the superior anti-adhesion capability of the TiO2/PMMA surface is also demonstrated (C) 2010 Elsevier B.V. All rights reserved
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