膜科学与技术

静电纺纳米亚微米纤维膜对染料的过滤性能研究

作者：刘雷艮，王育玲，陈建广

单位：苏州经贸职业技术学院，江苏苏州 215008

关键词：静电纺丝；PSF亚微米纤维膜；PA6纳米纤维膜；过滤性能；染料

出版年,卷(期):页码： 2017,37(1):100-106

摘要：

为了获得能够高效处理印染废水中有毒染料的分离膜，采用静电纺丝技术制备了具有亚微米级直径的聚砜（PSF）纤维膜和纳米级直径的尼龙6（PA6）纤维膜，通过SEM、孔径分析测试仪、接触角测量仪、电子强力仪和紫外可见光分光光度仪测试并分析了此两种纤维膜的孔隙结构、润湿性、力学性能及对分散蓝2BLN悬浮液和弱酸性蓝N-RL水溶液的过滤性能。结果表明，静电纺PA6纤维膜和PSF纤维膜的孔隙结构都属于微滤膜范畴，孔隙率均高于80%，其中PSF纤维膜对水具有较强的抗润性，而PA6纤维膜具有优良的润湿性，并且其力学性能明显优于PSF纤维膜。在0.1MPa死端恒压过滤条件下，连续过滤1 h后，两类纤维膜对分散蓝2BLN的截留率均达到94%以上，对弱酸性蓝N-RL的截留率均小于36%，但是均具有较高的过滤通量并且逐渐趋于一致。

The submicro-diameter polysulfone (PSF) fibrous membrane and nano-diameter nylon 6 (PA6) fibrous membrane were prepared by electrospinning in order to efficiently separating toxic synthetic dyes from water. The pore structure, wettability, mechanical property and filtration properties for disperse blue 2BLN and weak acid blue N-RL of these two type membranes were studied by SEM, pore-diameter testing meter, contact angle measurement, tensile strength tester and ultraviolet spectrophotometer. The results showed that the pore diameter of these membranes were all belong to microfiltration membrane’s, and both of their porosity were all above 80 percentage. It also showed that the electrospun PSF fibrous membrane has poor wettability, but the electrospun PA6 fibrous membrane has excellent wettability. When both of them were filtered under constant 0.1 MPa pressure for 1 h, their rejection rate for disperse blue 2BLN were all bove 94 percentage, but their rejection rate for weak acid blue N-RL was lower than 36 percentage, while their filtering flux were all higher than traditional commerce microfiltration membrane and were all gradually tending to consistent with time.

第一作者简介：刘雷艮（1979—），女，讲师，博士，E-mail: liuleiyin@aliyun.com.

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