| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1659089 | Surface and Coatings Technology | 2010 | 5 Pages |
Abstract
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 coli (gram negative). It is found that the anatase-TiO2 film is well-conglutinated on PMMA surface with an average crystallite size of ca. 4Â 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 2Â h illumation. Compared to PMMA without any treatment, the superior anti-adhesion capability of the TiO2/PMMA surface is also demonstrated.
Related Topics
Physical Sciences and Engineering
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Nanotechnology
Authors
Wenyue Su, Shichao Wang, Xuxu Wang, Xianzhi Fu, Jingning Weng,