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Journal of Nanomaterials
Volume 2011 (2011), Article ID 178921, 8 pages
http://dx.doi.org/10.1155/2011/178921
Research Article

Effect of Superhydrophobic Surface of Titanium on Staphylococcus aureus Adhesion

1Department of Orthopedics, General Hospital of Chinese PLA, Beijing 100853, China
2State Key Laboratory for Physical Chemistry of Solid Surfaces Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, Fujian 36100, China

Received 24 January 2011; Accepted 16 April 2011

Academic Editor: Xing J. Liang

Copyright © 2011 Peifu Tang et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Despite the systemic antibiotics prophylaxis, orthopedic implants still remain highly susceptible to bacterial adhesion and resulting in device-associated infection. Surface modification is an effective way to decrease bacterial adhesion. In this study, we prepared surfaces with different wettability on titanium surface based on TiO2 nanotube to examine the effect of bacterial adhesion. Firstly, titanium plates were calcined to form hydrophilic TiO2 nanotube films of anatase phase. Subsequently, the nanotube films and inoxidized titaniums were treated with 1H, 1H, 2H, 2H-perfluorooctyl-triethoxysilane (PTES), forming superhydrophobic and hydrophobic surfaces. Observed by SEM and contact angle measurements, the different surfaces have different characteristics. Staphylococcus aureus (SA) adhesion on different surfaces was evaluated. Our experiment results show that the superhydrophobic surface has contact angles of water greater than 150 and also shows high resistance to bacterial contamination. It is indicated that superhydrophobic surface may be a factor to reduce device-associated infection and could be used in clinical practice.