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bce ›› 2015, Vol. 49 ›› Issue (5): 1-6.doi: 10.3969/j.issn.1673-5854.2015.05.001

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Preparation and Antibacterial Activity of Xylon Grafted with Ag Nanoparticles

FENG Xiao-yan, CHEN Ying, WANG Chun-peng, CHU Fu-xiang   

  1. Institute of Chemical Industry of Forest Products, CAF;National Engineering Lab. for Biomass Chemical Utilization; Key and Open Lab. of Forest Chemical Engineering, SFA;Key Lab. of Biomass Energy and Material, Jiangsu Province, Nanjing 210042, China
  • Received:2015-05-15 Online:2015-09-30 Published:2015-10-12

Abstract: Polyvinylpyrrolidone-Ag nanoparticles (PVP-Ag NPs) were prepared with PVP as stabilizing and dispersing agent and sodium borohydride as reducing agent. Then the PVP-Ag NPs were grafted on xylon via the coupling effect of silane coupling agent to obtain the xylon with antibacterial activity. The structure and morphology as well as the thermal stability of PVP-Ag NPs grafted xylon were characterized by FT-IR, scanning electron microscope and thermal gravity analysis. The results indicated that the optimum reaction conditions of PVP-Ag NPs grafted on the xylon were the dosage of the coupling agent 4%, the coupling time 5 h and the grafting time 10 h. The grafting rate was about 5.8% under these conditions. The inhibitory rates of PVP-Ag NPs grafted xylon against gram-positive Staphylococcus aureus, Bacillus cereus, gram-negative Escherichia coli and Methicillin-resistant Staphylococcus aureus(MRSA) were all more than 95%. Furthermore, the PVP-Ag NPs grafted on wood fiber board possessed excellent antibacterial activity.

Key words: Ag nanoparticles, antibacterial activity, wood fiber board

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