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生物质化学工程 ›› 2015, Vol. 49 ›› Issue (5): 1-6.doi: 10.3969/j.issn.1673-5854.2015.05.001

• 研究报告 •    下一篇

银纳米微粒接枝木纤维的制备及抗菌性能研究

冯晓燕, 陈莹, 王春鹏, 储富祥   

  1. 中国林业科学研究院 林产化学工业研究所;生物质化学利用国家工程实验室;国家林业局 林产化学 工程重点开放性实验室;江苏省 生物质能源与材料重点实验室, 江苏 南京 210042
  • 收稿日期:2015-05-15 出版日期:2015-09-30 发布日期:2015-10-12
  • 通讯作者: 陈 莹,硕士生导师,主要从事天然高分子纳米材料的合成、表征和性能研究;E-mail:yingchencaf@gmail.com。 E-mail:yingchencaf@gmail.com
  • 作者简介:冯晓燕(1987—),女,山东潍坊人,硕士生,主要从事抗菌材料的研究工作
  • 基金资助:
    江苏省自然科学基金资助项目(BK20131071)

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

摘要: 以聚乙烯吡咯烷酮(PVP)为稳定剂和分散剂,硼氢化钠为还原剂制备了聚乙烯吡咯烷酮-银纳米微粒(PVP-Ag NPs),并将其通过硅烷偶联剂接枝到木纤维上,得到了具有抗菌活性的木纤维。利用扫描电子显微镜(SEM)和傅里叶-红外光谱(FT-IR)对PVP-Ag NPs接枝的木纤维进行了结构形貌的表征,并且通过热重分析仪(TG)分析其热稳定性能。结果表明,PVP-Ag NPs接枝木纤维的最佳反应条件是硅烷偶联剂用量4%、偶合时间5 h及接枝时间10 h,此条件下得到PVP-Ag NPs接枝木纤维的接枝率为5.8%;PVP-Ag NPs接枝的木纤维对革兰氏阳性菌金黄色葡萄球菌、蜡状芽疱杆菌、革兰氏阴性菌大肠埃希氏菌以及耐药性细菌耐甲氧西林金黄色葡萄球菌这4种菌种的抑菌率均大于95%,此外,PVP-Ag NPs接枝到木纤维板上的抗菌效果也较好。

关键词: 银纳米微粒, 抗菌, 木纤维板

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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