尿 素- 聚丙烯腈复合纳米纤维膜的制备与吸湿性能研究  

Preparation and Moisture Absorption Properties of Urea-polyacrylonitrile Composite Nanofiber Membranes

作　　者：孙巡 赵景丽 王杰 李康康 王娇娜[1] SUN Xun;ZHAO Jingli;WANG Jie;LI Kangkang;WANG Jiaona(School of Materials Design and Engineering,Beijing Institute of Fashion Technology,Beijing Key Laboratory of Research,Development and Evaluation of Clothing Materials,Beijing Textile Nanofiber Engineering Technology Research Center,Beijing 100029,China)

机构地区：[1]北京服装学院材料设计与工程学院,服装材料研究开发与评价北京市重点实验室,北京市纺织纳米纤维工程技术研究中心,北京100029

出　　处：《北京服装学院学报（自然科学版）》2024年第3期39-46,共8页Journal of Beijing Institute of Fashion Technology：Natural Science Edition

基　　金：北京服装学院培育基金重点项目(NHFZ20230158);北京服装学院研究生科研创新项目(X2023-051)。

摘　　要：溶液除湿技术采用的传统吸湿材料因长时间接触填料,易造成填料塔的腐蚀与变形,而吸湿纳米纤维膜具有大比表面积、高吸湿性能和良好的透气性,在该领域表现出优异的应用潜力。本文通过静电纺丝法,成功制备了聚丙烯腈(PAN)/尿素(Urea)复合纳米纤维膜,尿素以其独特的吸湿性能显著增强了纳米纤维膜的吸湿能力。利用扫描电子显微镜(SEM)、比表面积测量(BET)和红外光谱(F T-IR)等技术手段,表征了纳米纤维膜的微观形貌与结构;利用高低温试验箱探索了不同的氯化锂(LiCl)浸渍浓度、浸渍时间以及PAN与Urea的质量比对纳米纤维膜除湿效果的影响。结果表明,PAN和Urea的质量比为1∶1,LiCl的浸渍质量分数为35 wt%,浸渍48 h,在25℃和95%RH条件下,将纳米纤维膜置于高低温试验箱测试5 h,吸湿量可达到4.48 g/g。该复合材料展现出良好的吸湿性能,为纳米纤维型吸湿材料的设计开发提供了新的思路。Traditional hygroscopic materials used in solution dehumidification technology are prone to causing corrosion and deformation of the packing tower due to long-term contact with the packing.The hygroscopic nanofiber membrane,with a large specific surface area,high hygroscopic performance,and good breathability,demonstrates excellent application potential in this field.This article successfully prepared polyacrylonitrile(PAN)/urea(Urea)composite nanofiber membranes through the electrospinning method.Urea significantly enhanced the moisture absorption ability of the nanofiber membrane due to its unique moisture absorption performance.The microstructure and morphology of nanofiber membranes were characterized using techniques such as scanning electron microscopy(SEM),specific surface area measurement(BET),and infrared spectroscopy(FT-IR).The influence of different lithium chloride(LiCl)impregnation concentrations,impregnation times,and the mass ratio of PAN and Urea on the dehumidification effect of nanofiber membranes was explored using a high and low temperature experimental chamber.The results showed that with a mass ratio of PAN to urea of 1∶1 and an impregnation mass fraction of LiCl at 35wt%,after 48 hours of impregnation,the nanofiber membrane achieved a moisture absorption of 4.48 g/g.This was tested in a high and low-temperature experimental chamber at 25℃and 95%RH for 5 hours.This composite material exhibits excellent moisture absorption performance,providing new ideas for the design and development of nanofiber-type moisture-absorbing materials.

关 键 词：静电纺丝 复合纳米纤维 吸湿性能 尿素 

分 类 号：TS102.5[轻工技术与工程—纺织工程]