石墨烯-PAN基复合纳米纤维的微观形貌及其抗菌性能  

Micromorphology and antibacterial properties of graphene-PAN based composite nanofibers

作　　者：王前文[1] WANG Qianwen(School of Textile and Clothing,Yancheng Polytechnic College,Yancheng,Jiangsu 224005,China)

机构地区：[1]盐城工业职业技术学院纺织服装学院,江苏盐城224005

出　　处：《毛纺科技》2024年第9期44-52,共9页Wool Textile Journal

基　　金：江苏省阻燃纤维及功能性纺织品关键技术创新平台项目(2022JMRH-003);江苏省科技厅产学研合作项目(BY20221391);江苏省高等职业教育高水平专业群建设项目(苏教职函[2021]1号);江苏省高校国际化人才培养品牌专业建设项目(苏教外函[2022]8号)。

摘　　要：为了优化GO-PAN基复合纳米纤维的制备方法,探究石墨烯的质量分数对复合纳米纤维抗菌性能的影响效果,利用静电纺丝法制备了不同石墨烯质量分数的GO-PAN基复合纳米纤维,使用X射线衍射仪、扫描电子显微镜、傅里叶红外光谱、差示扫描量热仪、力学性能分析等对复合纳米纤维的宏观性能和微观结构进行表征。研究结果表明:石墨烯的添加降低了复合纳米纤维的结晶度,GO-PAN基复合纳米纤维微观上呈三维网状结构,纳米纤维无序交错排列,纤维直径为170~230 nm。随着石墨烯质量分数的增加,复合纳米纤维的拉伸强度先增大后降低,断裂延伸率持续降低,且当石墨烯质量分数增大至0.9%时,复合纤维的拉伸强度达到了最大值20.61 MPa;石墨烯的添加改善了复合纳米纤维热学性能,脱水温度提高。GO-PAN基复合纳米纤维对大肠杆菌和金黄色葡萄球菌的抑菌率均超过了95%,且石墨烯质量分数0.9%的复合纳米纤维膜对2种菌种的抑菌效率均达到最大值,抑菌率分别为97.32%、99.85%,其中复合纳米纤维膜对金黄色葡萄球菌的抑菌效率高于大肠杆菌。Graphene PAN based composite nanofibers have good flexibility and processability,and have shown significant importance and value in many fields,such as health care and textiles.In order to optimize the preparation method of graphene PAN based composite nanofibers and investigate the effect of graphene mass fraction on the antibacterial performance of composite nanofibers.Graphene PAN based composite nanofibers with different graphene mass fractions were prepared by electrospinning method.The macroscopic properties and microstructure of the composite nanofibers were characterized by XRD,SEM,FT-IR,DSC,and mechanical properties analysis.The research results indicate that the addition of graphene reduces the crystallinity of composite nanofibers.Graphene PAN based composite nanofibers exhibit a three-dimensional network structure at the microscopic level,with disordered and staggered arrangement of nanofibers,with a fiber diameter of 170-230 nm.As the mass fraction of graphene increases,the tensile strength of composite nanofibers first increases and then decreases,and the fracture elongation continues to decrease.When the mass fraction of graphene increases to 0.9%,the tensile strength of composite fibers reaches its maximum value of 20.61 MPa.The addition of graphene improved the thermal properties of composite nanofibers and increased the dehydration temperature.The bacteriostatic rates of Graphene PAN based composite nanofibers against E.coli and S.aureus were both over 95%,and the composite nanofiber membrane with 0.9%graphene mass fraction had the maximum bacteriostatic efficiency against the two strains,with bacteriostatic rates of 97.32%and 99.85%,respectively.The antibacterial efficiency of composite nanofiber membrane against Staphylococcus aureus was higher than that of Escherichia coli.

关 键 词：静电纺丝法 聚丙烯腈 石墨烯 复合纳米纤维 微观形貌 抗菌性能 

分 类 号：TS174.8[轻工技术与工程—纺织材料与纺织品设计]