磁控溅射银/锌改性聚苯乙烯/聚偏氟乙烯复合纤维膜的制备及其性能  

Preparation and properties of Ag/Zn modified polystyrene/polyvinylidene fluoride composite fibrous membranes by magnetron sputtering

作　　者：陈萌 何瑞东 程怡昕 李纪伟 宁新[2] 王娜 CHEN Meng;HE Ruidong;CHENG Yixin;LI Jiwei;NING Xin;WANG Na(College of Textile&Clothing,Qingdao University,Qingdao,Shandong 266071,China;Industrial Research Institute of Nonwovens&Technical Textiles,Qingdao University,Qingdao,Shandong 266071,China)

机构地区：[1]青岛大学纺织服装学院,山东青岛266071 [2]青岛大学、非织造材料与产业用纺织品创新研究院,山东青岛266071

出　　处：《纺织学报》2023年第3期19-27,共9页Journal of Textile Research

基　　金：山东省高等学校“青创科技计划”创新团队项目(2022KJ152)。

摘　　要：为制备得到兼具抗菌和紫外线防护性能的空气过滤材料,以聚苯乙烯(PS)和聚偏氟乙烯(PVDF)为原料,采用静电纺丝技术制备PS/PVDF纳米纤维膜,并在其正反两面分别磁控溅射银(Ag)和锌(Zn)纳米涂层得到PS/PVDF/Ag/Zn复合纤维膜,并对其微观形貌、元素组成、孔径分布、透气性、过滤性能、紫外线防护性能以及抗菌性能进行研究。结果表明:当溅射功率为60 W,溅射总时间为8 min时,所制得的复合纤维膜对300 nm NaCl气溶胶颗粒的过滤效率达到99.7%,压降为103 Pa,品质因子为0.056 Pa^(-1);此外,该复合纤维膜的紫外线防护系数可达到702.5,对大肠杆菌和金黄色葡萄球菌的抑菌带宽度分别为3.5和6.2 mm,表现出优异的紫外线防护性能和良好的抗菌性能。Objective Air filter material is the most commonly used and effective medium to deal with air pollution as well as ultraviolet radiation,especially to block the transmission of pathogens in the air.In addition,the bacteria intercepted during use are loaded on the surface of the filter material,which is easy to cause secondary pollution.In order to deal with air pollution and ultraviolet radiation and acquire antibacterial function at the same time,this paper focuses on the preparation of an air filter material with antibacterial and ultraviolet protective properties.Method PS/PVDF nanofibrous membranes were prepared by electrospinning using polystyrene(PS)and polyvinylidene fluoride(PVDF)as the main raw materials.The optimal volume ratio of PS and PVDF spinning solutions was determined by analyzing the micromorphology,mechanical properties and air permeability of the fibrous membranes with different mixing ratios.Silver(Ag)and zinc(Zn)nanocoatings were sputtered on both sides of the selected nanofibrous membrane,respectively.The micromorphology,element composition,pore size distribution,air permeability,filtration,ultraviolet(UV)protection and antibacterial properties of the PS/PVDF/Ag/Zn composite membrane were studied.Results When the volume ratio of PS to PVDF is 12,the fibrous membrane has high breaking stress(2.31 MPa)and good air permeability(177.2 mm/s),which meet the requirements of the practical application.On this basis,PS/PVDF fibrous membrane with a surface density of 2.88 g/m 2 and a volume ratio of 12 was prepared.The surface of the fibrous membrane was modified with different sputtering time periods to prepare PS/PVDF/Ag/Zn fibrous membrane.The Ag and Zn metal particles sputtered on the fibrous membrane surface achieve uniform deposition(Fig.4),and the combination stability between them and the fibrous membrane is excellent(Fig.6).After performance characterization,it was found that when the sputtering time was 8 min,compared with the PS/PVDF fibrous membrane without sputtering,the pore diameter of

关 键 词：聚苯乙烯 聚偏氟乙烯 静电纺丝 磁控溅射 空气过滤 紫外线防护性能 抗菌性能 

分 类 号：TS171[轻工技术与工程—纺织材料与纺织品设计]