对喷静电纺玉米醇溶蛋白/乙烯-乙烯醇共聚物复合过滤器的制备及其性能  

Preparation of zein/ethylene-vinyl alcohol copolymer composite filter by electrostatic spinning and its air filtration performance

作　　者：岳甜甜 郑帅 胡静 刘宇清[1] 林金友 YUE Tiantian;ZHENG Shuai;HU Jing;LIU Yuqing;LIN Jinyou(College of Textile and Apparel Engineering,Soochow University,Suzhou,Jiangsu 215127,China;Shanghai Advanced Institute,Chinese Academy of Sciences,Shanghai 201210,China)

机构地区：[1]苏州大学纺织与服装工程学院,江苏苏州215127 [2]中国科学院上海高等研究院,上海201210

出　　处：《纺织学报》2024年第11期21-28,共8页Journal of Textile Research

基　　金：国家自然科学基金项目(52173026);上海市自然科学基金项目(22ZR1470500)。

摘　　要：为积极响应国家“双碳”计划的号召,改善绿色纤维在空气过滤方面的应用,以玉米醇溶蛋白(zein)和乙烯-乙烯醇共聚物(EVOH)为原料,分别采用单针双组分和双针双组分静电纺丝方法,制备EVOH/zein复合过滤器,研究了2种不同静电纺丝方法制备的纤维的形貌,并对其过滤性能、力学性能进行对比分析。结果表明:采用双针双组分静电纺丝制备的EVOH/zein复合过滤器,在性能上表现更为优异;当zein质量分数为20%时,EVOH/zein复合过滤器的空气过滤效率为94.5%;经过40次循环测试,对氯化钠气溶胶颗粒过滤效率从92.45%增加到98.19%;对直径为0.5~3.0μm颗粒物的过滤效率均达到约100%;EVOH/zein复合过滤器的断裂强力为72.87 cN,是zein过滤器的7倍。Objective Particulate pollutants in the air are the main cause for air pollution,threatening public health and ecological environment.The requirements for air quality around the world are becoming more and more stringent.However,traditional petroleum-based synthetic polymer fiber filter materials may cause secondary pollution to the environment due to their non-degradable properties.Therefore,it is of great significance to study biodegradable air filtration materials.Due to the good membrane forming,biodegradability,biocompatibility and rich functional groups of zein,more and more research has been carried out in the field of air filtration in recent years.Method Using ethylene-vinyl alcohol copolymer(EVOH)and zein as raw materials,the mixed fiber membranes of zein and EVOH were prepared by single-needle two-component and double-needle two-component electrospinning,respectively.The fiber morphology prepared by two different electrospinning methods was studied,and the filtration performance and mechanical properties were compared and analyzed by attaching the nanofiber membrane to the commercial cellulose paper towel to form a composite filtration.Results The EVOH/zein composite filter prepared by two-needle two-component electrospinning showed better performance than the single-needle two-component electrospinning EVOH/zein-n filter.Under the condition of controlling the weight,the filtration efficiency of the single-needle two-component electrospinning EVOH/zein-n filter was 26.8%-50.7%,the pressure drop was 19.2-39.6 Pa,while the pressure drop of the pure EVOH filter was 45.2 Pa.The filtration efficiency of the two-needle two-component electrospinning EZ r filter is 43.2%-93.0%,and the pressure drop was 10.1-74.6 Pa.Among them,the EZ20 filter has the best filtration performance,the filtration efficiency reached 94.5%,and the quality factor of the EZ r composite filter was greater than that of the pure EVOH and zein filters.Under the condition of controlling the flow rate,when the zein concentration was 20%,the

关 键 词：玉米醇溶蛋白 乙烯-乙烯醇共聚物 对喷静电纺 空气过滤 复合过滤器 

分 类 号：TQ341.5[化学工程—化纤工业]