聚丙烯熔喷空气过滤材料表面仿生改性及性能  

Mussel-Inspired Modification of Polypropylene Melt-Blown Nonwovens for Air Filtration

作　　者：马文龙 郝天煦 张威[1] 王新亚 李永贵[2] 陈明星 Wenlong Ma;Tianxu Hao;Wei Zhang;Xinya Wang;Yonggui Li;Mingxing Chen(School of Textile and Garment,Hebei University of Science and Technology,Shijiazhuang 050018,China;Fujian Key Laboratory of Novel Functional Textile Fibers and Materials,Minjiang University,Fuzhou 350108,China)

机构地区：[1]河北科技大学纺织服装学院,河北石家庄050018 [2]福建省新型功能性纺织纤维及材料重点实验室(闽江学院),福建福州350108

出　　处：《高分子材料科学与工程》2024年第2期141-150,共10页Polymer Materials Science & Engineering

基　　金：河北省自然科学基金资助项目(E2022208027);河北省高等学校科学技术研究项目(QN2022128);福建省新型功能性纺织纤维及材料重点实验室(闽江学院)开放基金项目资助(FKLTFM2201);河北科技大学科研启动基金(1181368)。

摘　　要：聚丙烯(PP)熔喷空气过滤材料的抗菌性能较差,细菌、霉菌等微生物会寄生于材料表面。文中利用仿生改性法,以单宁酸(TA)为抗菌改性剂、CuSO_(4)/H_(2)O_(2)为促进剂制备了具有优异抗菌性能的PP/TA熔喷空气过滤材料。分析讨论了TA改性溶液浓度和CuSO_(4)/H_(2)O_(2)促进剂的加入对PP/TA熔喷空气过滤材料结构与性能的影响。结果表明,CuSO_(4)/H_(2)O_(2)促进剂的加入将TA改性时间从24 h缩短至40 min,并增强了PP/TA熔喷空气过滤材料的改性牢度。当TA浓度为6 g/L时,PP/TA熔喷空气过滤材料相较于PP熔喷空气过滤材料其过滤效率和压降分别提升了2.7%和4 Pa,水接触角降低了17.5°;且TA改性对PP熔喷空气过滤材料的驻极性能并无影响,驻极后PP/TA熔喷过滤材料的过滤效率为95.56%,压降为38 Pa,且具备良好的抗菌性能。同时,CuSO_(4)/H_(2)O_(2)促进剂的加入在材料表面引入了Cu^(2+),增强了抗菌效果。Polypropylene(PP)melt-blown air filter materials have poor antibacterial performance,bacteria,mold and other microorganisms will be parasitic on the surface of material,under certain conditions,also have the opportunity to infect and harm human beings.In this article,PP/TA melt-blown air filtration materials with excellent antibacterial properties were prepared with tannic acid(TA)as antibacterial modifier and CuSO_(4)/H_(2)O_(2)as promoter.The effects of the concentration of TA modified solution and addition of CuSO_(4)/H_(2)O_(2)promoter on the structure and properties of PP/TA melt-blown air filtration materials were analyzed and discussed.The results show that the addition of CuSO_(4)/H_(2)O_(2)promoter shortens the modification time of TA from 24 h to 40 min,and also enhances the modification fastness of PP/TA melt-blown air filtration materials.When the TA concentration is 6 g/L,the filtration efficiency and pressure drop of the PP/TA melt-blown air filter material are increased by 2.77%and 4 Pa,respectively,and the water contact angle is reduced by 17.52°compared with PP melt-blown air filter materials.However,TA modification has no effect on the electret performance of PP melt-blown air filter materials.After electret,the filtration efficiency of PP/TA melt-blown air filter materials is 95.56%,the pressure drop is 38 Pa,showing good antibacterial performance.Moreover,the addition of CuSO_(4)/H_(2)O_(2)promoter introduced Cu^(2+)on the surface of material to enhance the antibacterial effect.

关 键 词：聚丙烯熔喷材料 单宁酸 仿生改性 空气过滤性能 抗菌性能 

分 类 号：TS176[轻工技术与工程—纺织材料与纺织品设计]