Journal
CARBOHYDRATE POLYMERS
Volume 87, Issue 4, Pages 2482-2487Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.carbpol.2011.11.017
Keywords
Hydrothermal synthesis; Silver nanoparticles (AgNPs); Bacterial cellulose; Antibacterial activity
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Funding
- Chinese National Natural Science Foundation [21004008]
- Shanghai Municipal Education Commission
- Shanghai Education Development Foundation [11CG35]
- Fundamental Research Funds for the Central Universities
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Antibacterial materials based on cellulose have been widely used in many fields. In this work, an environmentally benign and facile approach for production of silver nanoparticles (AgNPs) was proposed for the first time by hydrothermal synthesis using bacterial cellulose (BC) as both the reducing and stabilizing agent, without any chemical reagents introduced. Some key reaction parameters were optimized to achieve a high antibacterial activity of the BC/AgNPs composite. Under the optimal conditions, a small size and a narrow distribution of AgNPs, 17.1 +/- 5.9 nm, was formed on the BC matrix, with a silver content of 1.78% (w/w) and a MIC value of 1.30 x 10(-4) mu g/CFU. Moreover, a sustained release of silver and a prolonged antibacterial performance of the composite against Staphylococcus aureus were found over a long period time of 72 h, which were important for practical applications. (C) 2011 Elsevier Ltd. All rights reserved.
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