A facile synthesis of high antibacterial polymer nanocomposite containing uniformly dispersed silver nanoparticles

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• 作者：Jing An ; Qingzhi Luo ; Minna Li ; Desong Wang ; Xueyan Li…
• 关键词：Silver nanoparticles ; Nanocomposite ; Inversed microemulsion ; Emulsion polymerization ; Antimicrobial activities
• 刊名：Colloid & Polymer Science
• 出版年：2015
• 出版时间：July 2015
• 年：2015
• 卷：293
• 期：7
• 页码：1997-2008
• 全文大小：2,085 KB
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  24.Yang JH, Zha
• 作者单位：Jing An (1)
  Qingzhi Luo (1)
  Minna Li (2)
  Desong Wang (1)
  Xueyan Li (1)
  Rong Yin (1)
  
  1. School of Sciences, Hebei University of Science and Technology, NO. 26 Yuxiang Road, Shijiazhuang, 050018, Hebei, People’s Republic of China
  2. College of Chemical and Pharmaceutical Engineering, Hebei University of Science and Technology, Shijiazhuang, 050018, Hebei, People’s Republic of China
  
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Chemistry
  Polymer Sciences
  Physical Chemistry
  Soft Matter and Complex Fluids
  Characterization and Evaluation Materials
  Food Science
  
• 出版者：Springer Berlin / Heidelberg
• ISSN：1435-1536

文摘

Microemulsion technology is a typical method to prepare relatively stable silver nanoparticles (AgNPs) with desired microstructure. However, once out of microemulsion and filled into polymer material matrix, AgNPs are always hard to prevent from large aggregations. Therefore, mixed monomer methyl methacrylate (MMA)/styrene (St) and sodium citrate were chosen as continuous phase and reductant, respectively, to prepare a stable reversed microemulsion, in which AgNP colloids were in situ formed. The obtained microemulsion containing AgNPs was dispersed into water to form an ordinary emulsion, and the ordinary emulsion copolymerization was carried out to prepare poly(MMA-co-St)/Ag nanocomposite. Results of transmission electron microscopy (TEM) and X-ray diffraction (XRD) measurement show that spherical AgNPs disperse into the copolymer matrix evenly with an average diameter less than 10?nm. The UV-Vis diffuse reflectance spectroscopy reveals the typical emission peak of AgNPs at 410~430?nm. Analyses of Fourier transform infrared spectroscopy (FTIR) show a strong interaction between AgNPs and copolymer matrix. Thermogravimetric-differential scanning measurement shows that the decomposition temperature of poly(MMA-co-St) raises to a higher temperature in the presence of AgNPs. Antimicrobial assays of as-synthesized AgNPs and poly(MMA-co-St)/Ag nanocomposite prove their excellent antimicrobial activities.