壳聚糖-g-聚丙烯腈/银纳米复合材料的制备、表征及抗菌活性。
Preparation, characterization and antibacterial activity of chitosan-g-poly acrylonitrile/silver nanocomposite.
机构信息
Textile Research Division, National Research Center, Dokki, Giza, P.O. 12622, Giza 12522, Egypt.
Textile Research Division, National Research Center, Dokki, Giza, P.O. 12622, Giza 12522, Egypt.
出版信息
Int J Biol Macromol. 2014 Jul;68:178-84. doi: 10.1016/j.ijbiomac.2014.04.028. Epub 2014 Apr 24.
Chitosan-grafted-poly acrylonitrile silver nanocomposites (Cs-g-PAN/Ag) were prepared via in-situ chemical reduction of Ag ions in graft copolymerization of acrylonitrile onto chitosan. Graft copolymerization process was provided by FTIR and gravimetric methods. UV spectra and TEM images show silver nanoparticles with average 15-20nm dispersed homogeneously in CS-g-PAN/Ag nanocomposite-ray and TGA evident the change in crystallography and thermal stability in consequence of presence Ag nanoparticles. Cs-g-PAN/Ag nanocomposite showed excellent antimicrobial performance towards bacteria such as Escherichia coli and Staphylococcus aureus.
壳聚糖接枝聚丙烯腈银纳米复合材料（Cs-g-PAN/Ag）通过在壳聚糖接枝丙烯腈共聚过程中原位还原银离子制得。接枝共聚过程通过傅里叶变换红外光谱（FTIR）和重量分析法进行了验证。紫外光谱和透射电子显微镜（TEM）图像表明，银纳米粒子平均粒径为 15-20nm，在 CS-g-PAN/Ag 纳米复合材料中均匀分散。X 射线光电子能谱（XPS）和热重分析（TGA）表明，由于银纳米粒子的存在，复合材料的结晶度和热稳定性发生了变化。Cs-g-PAN/Ag 纳米复合材料对大肠杆菌和金黄色葡萄球菌等细菌表现出优异的抗菌性能。
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