A new strategy for producing antibacterial textile surfaces using silver nanoparticles
A new strategy for producing antibacterial textile surfaces using silver nanoparticles
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DOI：
10.1016/j.cej.2013.05.018
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发表时间：
2013-07-15
影响因子：
15.1
通讯作者：
Hoda, Numan
中科院分区：
文献类型：
--
作者：
Budama, Leyla;Cakir, Burcin Acar;Hoda, Numan
采用原子转移自由基聚合法(ATRP)合成了不同银共聚比的聚苯乙烯-嵌段-聚丙烯酸(PS-b-PAA)反胶束核，制备了银纳米粒子。用透射电子显微镜和动态光散射法对共聚物溶于甲苯形成的PS-b-PAA反胶束进行了表征。用透射电子显微镜和粉末X射线衍射仪对胶束核内合成的银纳米粒子进行了表征。结果表明，晶态银纳米粒子是以全比例形成的。银纳米颗粒的平均尺寸与银前驱体的比例无关，在所有比例下都在20 nm左右。含银纳米粒子的共聚溶液已被涂覆在纺织品上，以显示其抗菌活性。研究表明，纺织品表面的电晕(PM)和羟基发生了酯化反应，从而提高了织物的抗菌性能。对革兰氏阴性大肠埃希菌和革兰氏阳性金黄色葡萄球菌均有明显的抗菌活性。抗菌活性是永久性的，对大肠杆菌最多5次洗涤，对金黄色葡萄球菌最多20次洗涤。(C)2013爱思唯尔B.V.保留所有权利。
Silver nanoparticles have been fabricated within reverse micelle cores of polystyrene-block-polyacrylic acid (PS-b-PAA) copolymer synthesized by the atom transfer free radical polymerization (ATRP) method at various silver:copolymer ratios. The PS-b-PAA reverse micelles formed by dissolving the copolymer in toluene have been characterized by transmission electron microscopy (TEM) and dynamic light scattering (DLS). Silver nanoparticles synthesized within the micellar cores have been characterized by TEM and powder X-ray diffraction (XRD). It has been determined that crystal silver nanoparticles were formed at whole ratios. The average size of the silver nanoparticles was found to be independent of the silver precursor ratio and is around 20 nm for all ratios. The copolymer solution including silver nanoparticles has been coated onto textile fabrics for antibacterial activity. It has been determined that an esterification reaction takes place between corona (PM) and hydroxyl groups on the textile surfaces which enhances the permanency of antibacterial activity of the fabrics. Significant antibacterial activity against gram-negative Escherichia coli (E. coli) and gram-positive Staphylococcus aureus (S. aureus) have been determined. The antibacterial activity is permanent up to five washings against E. coli and up to twenty washings against S. aureus. (C) 2013 Elsevier B.V. All rights reserved.