摘要
为获得具有优异抗菌和抗紫外性能的聚丙烯(PP)熔喷非织造材料,采用溶胶—凝胶法制备纳米氧化锌(ZnO),然后通过聚多巴胺(PDA)和聚乙烯亚胺(PEI)对PP进行表面亲水处理,获得改性PP熔喷材料(M-PP),通过浸渍法将壳聚糖(CS)和ZnO依次负载在改性后的M-PP上,制备得到ZnO/CS@M-PP复合熔喷材料;对ZnO/CS@M-PP复合熔喷材料进行形貌、结晶结构、抗菌和抗紫外性能分析。结果表明:通过溶胶—凝胶法制备的纳米ZnO为梭状形貌,长度为200~600 nm,结晶结构完整,ZnO与CS均匀分布在M-PP的表面;随着ZnO质量浓度的增加,ZnO/CS@M-PP复合熔喷材料对金黄色葡萄球菌和大肠杆菌的抑菌率随之提高,紫外线防护系数(UV protection factor,UPF)值也随之增加;当ZnO负载质量浓度为2 mg/mL时,ZnO/CS@M-PP复合熔喷材料对金黄色葡萄球菌和大肠杆菌的抑菌率可达99.99%,UPF值为139.97。
To obtain polypropylene(PP)melt-blown nonwoven materials with excellent antibacterial and UV resistance properties,nano zinc oxide(ZnO)was synthesized by the sol-gel method.Then PP was first treated with polydopamine(PDA)and polyethylene imine(PEI)to improve its surface hydrophilicity and modified melt-blown materials(M-PP)were obtained.Subsequently,chitosan(CS)and ZnO were loaded on the surface of M-PP by the impregnation method and ZnO/CS@M-PP composite melt-blown materials were prepared.The morphology,crystalline structure,and antibacterial and UV resistance properties of the ZnO/CS@M-PP composite melt-blown materials were analyzed.The results show that ZnO nanoparticles with a length in the range of 200 to 600 nm have a fusiform morphology,the crystalline structure is perfect,and ZnO and CS are evenly distributed on the surface of M-PP.With the increase of the loading concentration of ZnO,the antibacterial efficiencies of ZnO/CS@M-PP composite melt-blown materials against Staphylococcus aureus and Escherichia coli and the UV protection factor(UPF)value also increase.When the loading concentration of ZnO is 2 mg/mL,the antibacterial efficiencies of ZnO/CS@M-PP composite melt-blown materials against Escherichia coli and Staphylococcus aureus can reach 99.99%.At this time,the UPF value of the composite melt-blown materials is 139.97.
作者
夏月
孙辉
于斌
XIA Yue;SUN Hui;YU Bin(College of Textile Science and Engineering(International Institute of Silk),Zhejiang Sci-Tech University,Hangzhou 310018,China;Zhejiang Provincial Innovation Center of Advanced Textile Technology,Shaoxing 312000,China)
出处
《浙江理工大学学报（自然科学版）》
2023年第6期674-680,共7页
Journal of Zhejiang Sci-Tech University(Natural Sciences)
基金
浙江省自然科学基金项目(LTGS23E030005)。
关键词
聚丙烯熔喷非织造材料
结晶结构
壳聚糖
氧化锌
抗菌性能
抗紫外性能
polypropylene melt-blown nonwoven material
crystalline structure
chitosan
zinc oxide
antibacterial property
UV resistance property
