【摘要】 采用静电纺丝技术制备了柠檬酸(CA)掺杂的聚丙烯腈(PAN)复合电纺纳米纤维膜,CA可以显著增大纳米纤维膜的比表面积和提升浸润性。采用红外光谱(IR)、扫描电镜(SEM)等手段对纳米纤维膜的结构与微观形貌进行了表征,以氯化锂(LiCl)溶液为调湿溶液浸泡复合纳米纤维膜,在实验室自制实时连续监测模拟装置中进行模拟调湿性能测试。结果表明:与纯PAN纳米纤维膜相比,PAN/CA6(CA的质量分数为6%)复合纳米纤维膜比表面积提高近6倍,水接触角减小10°,浸润性明显提升,且相同条件下,除湿率提高56.8%,吸湿速率更快。更多还原

【Abstract】 Polyacrylonitrile(PAN) doped with citric acid(CA) composite electrospun nanofiber membranes was prepared by electrospinning technology.CA can significantly increase the specific surface area and wettability of the nanofiber membrane.Infrared spectroscopy(IR),scanning electron microscopy(SEM) and other methods were used to characterize the structure and micro-morphology of the nanofiber membrane.The composite nanofiber membrane was immersed in a lithium chloride(LiCl) solution as a humidity-controlling solution,and the simulated humidity control performance was tested by lab-made real-time continuous monitoring simulation device.The results show that,compared with the pure PAN nanofiber membrane,the specific surface area of the PAN/CA6(the quality score of CA is 6%) composite nanofiber membrane is increased nearly by 6 times,and the water contact angle is reduced by 10°.And the wettability of the membrane is improved significantly.Under the same conditions,the dehumidification rate is increased by 56.8%,and the moisture absorption rate is higher.更多还原