丝织物基纳米结构银膜形貌及抗菌性能研究

Study on nano-structured silver film morphology and antibacterial properties of silk fabrics

为了实现纺织材料表面抗菌功能化,采用低温磁控溅射技术在真丝织物表面沉积1~5nm厚的纳米结构银薄膜。采用振荡烧瓶法测试样品的抗菌性能;利用原子力显微镜（AFM）分析了纳米银薄膜的表面形态和粒径。结果表明：在实验范围内,1nm厚的银膜已具有优良的抗菌性能。从纳米银薄膜表面形态结构可以看出,纳米结构银薄膜由极其微小的均匀性较好的粒子组成,基本呈连续覆盖状态,随着溅射时间的延长,纳米银颗粒存在一定团聚现象,粒径呈增大趋势。X射线衍射（XRD）测试表明,沉积在丝织物表面的纳米银薄膜形成了一定结晶结构。

The nano-structured silver films with thickness ranging from 1 nm to 5nm were deposited on the surface of silk fabrics by magnetron sputtering technology to impart it the antibacterial function.Shake flask test was used to assess the antibacterial properties of all samples.Atomic force microscope（AFM） was employed to observe the surface morphology of silver films and the grain size of silver particles was analyzed.The results showed that the silver film of 1nm had excellent antibacterial properties in this experiment.The AFM images revealed that silver films was formed by nano-structured and homogeneous particles,assuming continuous covering state.As sputtering time prolonged,nano-silver particles had a certain reunion,the size of silver particles increased.And the XRD tests indicated that the certain crystal structure of nano-structured films was formed on the surface of silk fabrics.