静电纺PAN纳米纤维膜强力对含油污水过滤性能的影响

发布时间：2018-06-29 22:22

本文选题：静电纺 + 聚丙烯腈(PAN)纳米纤维膜　；参考：《东华大学学报(自然科学版)》2016年05期

【摘要】：采用静电纺丝法制备聚丙烯腈(PAN)纳米纤维膜,通过扫描电子显微镜(SEM)观察纳米纤维膜形貌与纤维直径,并分析了纳米纤维膜厚度、加入不同质量分数NaCl、接收滚筒转速、热轧和平板硫化热黏合对纳米纤维膜强力、伸长率和含油污水过滤性能的影响.结果表明:随着纺丝厚度的增加,纳米纤维膜强度呈线性增加趋势,伸长率呈先增加后减小趋势;加入NaCl对纳米纤维膜强力的影响不显著;接收滚筒转速越高,沿纤维排列方向的纳米纤维膜强力呈增加趋势,垂直纤维排列方向的则呈减少趋势,两个方向的纳米纤维膜伸长率均呈下降趋势;热轧和平板硫化热黏合是提高纳米纤维膜强力最有效的方式,热轧与平板硫化热黏合方式制备的复合纤维膜的断裂强力为50~60N,断裂伸长率为50%~75%,强力约是纳米纤维膜的60倍,强度是纯纳米纤维膜的10~20倍.此外,平板硫化热黏合的复合纤维膜乳化油截留率高达98.56%,高于聚偏氯乙烯(PVDF)商品超滤膜(97.00%),且纯水通量为4 004L/(m~2·h),因此,平板硫化热黏合复合纤维膜在水处理方面具有巨大的应用潜力.
[Abstract]:Polyacrylonitrile (pan) nano-fiber film was prepared by electrospinning method. The morphology and diameter of nano-fiber film were observed by scanning electron microscope (SEM). The thickness of nano-fiber film was analyzed. Effects of hot rolling and plate vulcanization on the strength, elongation and filtration performance of nanofiber membrane. The results show that with the increase of spinning thickness, the strength of nano-fiber film increases linearly, the elongation increases first and then decreases, the influence of NaCl on the strength of nano-fiber film is not significant, the higher the speed of receiving drum is, The tensile strength of nanofiber film along the direction of fiber arrangement showed an increasing trend, while that of perpendicular direction showed a decreasing trend, and the elongation of nanofiber film in both directions showed a downward trend. Hot rolling and plate vulcanization heat bonding is the most effective way to improve the strength of nanofiber film. The breaking strength of the composite fiber film prepared by hot rolling and plate vulcanization heat bonding method is 50 ~ 60N, the elongation at break is 50 ~ 7575 and the strength is about 60 times of that of the nanofiber film. The strength of the film is 10 ~ 20 times of that of pure nanofiber film. In addition, the rejection rate of composite fiber membrane emulsified oil was 98.56%, which was higher than that of polyvinylidene chloride (PVDF) commercial ultrafiltration membrane (97.00%), and the pure water flux was 4 004 L / (m ~ 2 h),). Plate vulcanized thermal adhesive composite fiber membrane has great potential in water treatment.
【作者单位】：东华大学纺织面料技术教育部重点实验室;东华大学纺织学院;
【基金】：国家自然科学基金资助项目(51373033,11172064) 长江学者(青年学者)计划资助项目教育部重点支持项目(113027A) 上海市科委“扬帆计划”资助项目(14Y1405100) 中央高校基本科研业务费专项资金资助项目东华大学“励志计划”资助项目;东华大学研究生创新基金资助项目(EG2015005)
【分类号】：X703;TQ340.64

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