Preparation and application of silver nanoparticles on silk for imparting antimicrobial properties
Preparation and application of silver nanoparticles on silk for imparting antimicrobial properties
复制标题
DOI：
10.1002/app.27584
复制
发表时间：
2008-04-05
影响因子：
3
通讯作者：
Muthu, S. G.
中科院分区：
文献类型：
--
作者：
Gulrajani, M. L.;Gupta, Deepti;Muthu, S. G.
银纳米颗粒通过化学还原法制备，所述化学还原法用还原剂如肼和葡萄糖还原硝酸银。用透射电镜、扫描电镜和光学显微镜对银纳米粒子进行了表征。研究了搅拌速度、温度、还原剂种类、分散剂等工艺参数对粒径的影响。随着搅拌速度的增加和工艺温度的降低，颗粒尺寸减小。当硝酸银被葡萄糖还原时，形成的颗粒较小，而与肼还原形成的颗粒相比。通过排气法将通过在5 ℃和40 ℃下用肼还原产生的平均尺寸为10 nm和35 nm的银纳米颗粒施加到丝上。用在5 ℃下产生的40 ppm银水溶胶和在40 ℃下产生的60 ppm银水溶胶处理的丝绸织物显示出对革兰氏阳性细菌金黄色葡萄球菌的100%的抗微生物活性。还研究了经处理的丝织物的抗微生物性能对洗涤的耐久性。(C)2008 Wiley Periodicals，Inc.
Silver nanoparticles were produced by a chemical reduction method that reduced silver nitrate with reducing agents such as hydrazine and glucose. The silver nanoparticles were characterized with transmission electron microscope, scanning electron microscope, and optical microscope. The effects of process parameters such as the stirring speed, temperature, type of reducing agent, and dispersing agent on the particle size were studied. The particle size decreased with an increase in the stirring speed and a decrease in the process temperature. Smaller particles were formed when the silver nitrate was reduced by glucose versus those that were formed by reduction with hydrazine. Silver nanoparticles with average sizes of 10 and 35 nm, produced by reduction with hydrazine at 5 and 40 degrees C, were applied to silk by an exhaust method. Silk fabrics treated with 40 ppm silver hydrosol produced at 5 degrees C and 60 ppm silver hydrosol produced at 40 degrees C showed 100% antimicrobial activity against the gram-positive bacterium Staphylococcus aureus. The durability of the antimicrobial property of the treated silk fabric to washing was also examined and is presented. (C) 2008 Wiley Periodicals, Inc.