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聚醚砜与杂萘联苯共聚醚砜共混超滤膜的制备

作者：步肖曼¹，张守海¹，³，薛仁东¹，刘鹏¹，刘炳荣²，蹇锡高¹

单位： 1. 大连理工大学化工学院，辽宁大连 116024；2. 江西三鑫医疗科技股份有限公司，江西南昌 330200；3.大连理工常熟研究院，江苏常熟 215513

关键词：聚醚砜；杂萘联苯共聚醚砜；共混；超滤膜；中空纤维

DOI号：

分类号： TQ028.8

出版年,卷(期):页码： 2018,38(6):56-62

摘要：

以聚醚砜（PES）与杂萘联苯共聚醚砜（PPBES）为膜材料，通过溶液共混，采用相转化法制备了聚醚砜/杂萘联苯共聚醚砜（PES/PPBES）共混超滤膜。结合差示扫描量热分析仪、傅立叶变换红外光谱仪、旋转粘度计、接触角测量仪、扫描电子显微镜、万能材料试验机等，分析了PES/PPBES共混比例对铸膜液相容性、铸膜液粘度、超滤膜结构和性能等的影响规律。实验结果表明，当共混物中PPBES质量百分含量低于20%时，PPBES与PES具有较好的相容性；实验范围内，PES/PPBES中空纤维共混超滤膜均有较高的牛血清蛋白（BSA）截留率，膜的亲水性明显提高，纯水通量显著增加，当PPBES含量为30%时，纯水通量可达到60.5 L/m2•h，是PES膜的2.5倍左右。

Poly(ether sulfone) (PES) and copoly(phthalazinone biphenyl ether sulfone) (PPBES) were used as membrane materials to prepare PES/PPBES blend ultrafiltration membranes. The effect of blend ratio of PES to PPBES on the compatibility and the viscosity of casting solution and the properties of ultrafiltration membranes were investigated by differential scanning calorimetry, fourier transform infrared spectrometer, rotational viscometer, contact angle measuring instrument, scanning electron microscopy and universal material testing machine. The experimental results show that when the content of PPBES was less than 20% in the blend, PPBES and PES had good compatibility; in these experiments, the hollow fiber ultrafiltration membrane showed a high rejection of bovine serum albumin (BSA), and with the increase in PPBES content of the blend, the pure water flux increased significantly. The membrane’s hydrophilicity was greatly improved. When the PPBES content was 30 wt%, the pure water flux of PES/PPBES blend membrane could reach 60.5 L/m2.h, which was about 2.5 times the flux of PES membrane.

基金项目：

大连市杰出青年科技人才培育计划项目（2015J12JH208）

作者简介：

第一作者简介：步肖曼（1993-），女，山东菏泽人，研究生，硕士，中空纤维超滤膜，E-mail：751051753@qq.com 通讯作者，E-mail：zhangshh@dlut.edu.cn

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