静电纺纳米级纤维复合膜及其过滤性能

 采用1,2-二氯乙烷和三氟乙酸共混物为溶剂(质量比2∶1),在室温下配制了质量分数为13%的聚己二酸己二醇酯纺丝液,通过静电纺制备了直径范围在80~500 nm之间的聚己二酸己二醇酯纳米级纤维和驻极体熔喷非织造布与纳米级纤维复合膜,借助扫描电子显微镜观察了纳米级纤维表面形貌结构,此外还探讨了驻极体熔喷非织造布与纳米级纤维复合膜的过滤性能。结果表明,在气流速度为2.83 L/min时,该复合膜对粒径为0.3μm粉尘的过滤效率高达99.9%。

Electrospun nano-fiber composite membrane and its filtration properties

Spinning solution of poly(hexamethylene adipate)(13%) was prepared using 2∶1(w/w) mixture of 1,2-dichloroethane and trifluoroacetic acid as solvent at room temperature.Poly(hexamethylene adipate) was electrospun into nano_fiber whose diameter in the range of 80～(500 nm,) and the nano_fiber composite membrane with electret melt-blowing nonwovens was also presented.The morphology of the nano_fiber was investigated by SEM,and the filtration property of the nano_fiber composite membrane with electret melt-blowing nonwovens was examined.The results showed that the filtration efficiency of nano_fiber composite membrane with electret melt-blowing nonwovens to the particles diameter about(0.3 μm) at a flow rate of(2.83 L/min) reaches(99.9%.)