Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 3, Issue 8, Pages 2851-2860Publisher
AMER CHEMICAL SOC
DOI: 10.1021/am2003944
Keywords
plasma surface modification; biomaterials; antimicrobial; self-decontamination
Funding
- City University of Hong Kong [7008009, 9360110, 9678021, 9678028, 9667038]
- Hong Kong Research Grant Council (RGC) [112510, 123708, 124009, SEG_CityU05]
- ITF [ITS 342/09]
- AO Foundation [S-09-75Y]
- Chinese National High Technology Research and Development 863 Project [2009AA02Z416, CityU 9231026]
- National Natural Science Foundation of China [50901032]
- Ministry of Education Specialized Research Foundation [20094208120003]
- Hubei Provincial Middle-Young Research Fund [Q20101010]
- Wuhan ChenGuang Research Programme Grant [201150431134]
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The surface compatibility and antibacterial properties of biomaterials are crucial to tissue engineering and other medical applications, and plasma-assisted technologies have been employed to enhance these characteristics with good success. Herein, we describe and review the recent developments made by our interdisciplinary team on self-antimicrobial biomaterials with emphasis on plasma-based surface modification. Our results indicate that a self-antibacterial surface can be produced on various types of materials including polymers, metals, and ceramics by plasma treatment. Surface characteristics such as roughness, microstructure, chemistry, electronegativity, free energy, hydrophilicity, and interfacial physiochemistry are important factors and can be tailored by using the appropriate plasma-assisted processing parameters. In particular, mechanistic studies reveal that the interfacial physiochemical processes, biocidal agents, and surface free energy are predominantly responsible for the antibacterial effects of plasma-modified biomaterials.
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