This paper reports the synthesis and application of nanosilver antibacterial materials. The preparation methods of nanosilver complexes are described. The effect of silver nitrate concentration and nanosilver dispersion on antibacterial properties was analysed. In this experiment, TEMPO oxidant was used to oxidize hydroxyl on the C₆ position of wood nanocellulose into a carboxyl group. Meanwhile, carboxyl compound was used to react with AgNO₃, the silver composite material was prepared with PVA as the substrate. We use interface grafting. The surface of cellulose is bonded with reactive functional groups to form a transition layer. To improve the interface bonding between matrix and reinforcing fiber. The Ag-NC-PVA nanocomposite film was characterized by UV–Vis, SEM, TEM, mechanical properties and antibacterial properties analysis. SEM and TEM images showed that the size of most silver nanoparticles ranged from 5 to 20 nm; the mean particle size was 10 nm. The mechanical properties of Ag-NC-PVA films were greater than that of PVA film. When the amount of Ag-NC was 4%, its tensile strength was 71.3 MPa; it’s almost 15% higher than PVA. After antibacterial analysis, Ag-NC endowed PVA with excellent antibacterial properties. The prepared Ag-NC-PVA greatly promotes the practical application development of the silver-based composite bacteriostatic material.

本文报道了纳米银抗菌材料的合成与应用。描述了纳米银配合物的制备方法。分析了硝酸银浓度和纳米银分散体对抗菌性能的影响。在该实验中，使用TEMPO氧化剂将木材纳米纤维素的C ₆位上的羟基氧化为羧基。同时，使用羧基化合物与AgNO ₃反应，以PVA为基材制备银复合材料。我们使用接口嫁接。纤维素的表面与反应性官能团结合形成过渡层。改善基体和增强纤维之间的界面粘合。通过UV-Vis，SEM，TEM，机械性能和抗菌性能分析对Ag-NC-PVA纳米复合膜进行了表征。SEM和TEM图像显示，大多数银纳米颗粒的尺寸范围为5至20 nm。平均粒径为10nm。Ag-NC-PVA薄膜的机械性能优于PVA薄膜。当Ag-NC的含量为4％时，其抗张强度为71.3MPa；当抗拉强度为4％时，抗拉强度为71.3MPa。比PVA高出近15％。经过抗菌分析，Ag-NC赋予PVA优异的抗菌性能。