期刊
CARBOHYDRATE POLYMERS
卷 90, 期 1, 页码 8-15出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.carbpol.2012.03.080
关键词
Silver nanoparticles; Chitosan; Polyvinylpyrrolidone; Nanocomposite films; Antibacterial; Medical devices
资金
- National Basic Research Program of China [2011CB606203]
- NSFC [50830106, 21174126]
- National Science Fund for Distinguished Young Scholars [51025312]
- Ph. D. Programs Foundation of Ministry of Education of China [20110101110037]
- Open Project of State Key Laboratory of Supramolecular Structure and Materials [SKLSSM 201204]
Infection associated with medical devices is one of the most frequent complications of modern medical biomaterials. Preparation of antibacterial films on the medical devices is a great challenge owing to bactericidal efficiency, long acting and biocompatibility. In this study, silver nanoparticles (Ag NPs) doped chitosan/polyvinylpyrrolidone (PVP) films were successfully prepared by dip coating method. The nanocomposite films with spherical Ag NPs (diameters in 10-50 nm) were stable after being immersed in PBS for 35 days. Through regulating the concentration of AgNO3, the nanocomposite films showed good cell compatibility. The nanocomposite films could eliminate 100% Staphylococcus aureus (ATCC 6538) and Escherichia coli (ATCC 8739) in 5 min and had favorable long-acting antibacterial property. The increase of PVP amount obviously enhanced anti-adhesion activity of the nanocomposite film. Such nanocomposite films can be expected to have good potential in biomaterials applications. (C) 2012 Elsevier Ltd. All rights reserved.
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