磺化聚砜在聚醚砜膜亲水改性中的制备与表征  

Preparation and Characterization of Hydrophilic Modification of Polyether Sulfone Membrane by the Additive of Sulfonated Polysulfone

作　　者：王薇[1,2] 梁朝霞[1,2] 张宇峰[1,2] 

机构地区：[1]天津工业大学中空纤维膜材料与膜过程教育部重点实验室 [2]天津工业大学材料科学与工程学院,天津300387

出　　处：《高分子材料科学与工程》2016年第4期153-158,共6页Polymer Materials Science & Engineering

基　　金：国家高技术研究发展计划(863计划)(2012AA03A602);长江学者和创新团队发展计划资助(IRT13084)

摘　　要：以聚醚砜(PES)和磺化聚砜(SPSf)为膜材料,N,N-二甲基乙酰胺(DMAc)为溶剂,聚乙二醇(PEG)为制孔剂,采用干湿法制备中空纤维超滤膜,研究了不同磺化度的SPSf及SPSf浓度对中空纤维共混膜的影响,通过傅里叶变换红外光谱仪、扫描电镜和孔径测试,分别研究了SPSf的化学结构、膜的形态和孔径分布。通过超滤膜性能的测试,探讨了共混膜性能的影响。结果表明,在磺化度10%,磺化聚砜质量分数4%时,超滤膜的水通量为450 L/(m2·h),对聚乙二醇-20000(PEG-20000)的截留率为95%;共混膜随温度的升高,共混膜的水通量降低,截留率几乎稳定不变;对牛血清蛋白(BSA)的通量衰减率为10.9%,通量恢复率为21%。In this study,sulfonated polysulfone（ SPSf）-polyether sulfone（ PES） hollow fiber ultrafiltration blend membranes were prepared using N-N dimethylacetamide（ DMAc） as solvent,polyethylene glycol as hole-agent by drywet spinning method. It was researched by adding different degree of sulfonation,sulfonated polysulfone concentration.The chemical structure of sulfonated polysulfone,membrane forms and pore size distribution were characterized by FTIR,SEM and aperture test,respectively. By ultrafiltration membrane performance test system,the influence of the blend membrane was discussed in terms of water permeation flux and rejection. It is proved that the water permeation flux is450 L /（ m2·h） and rejection rate of PEG-20000 is 95% at sulfonated degree of 10%,concentration of sulfonated polysulfone of 4%. With temperature rising,the water flux of blending membrane decreases,while the rejection ratio almost is stable; flux decline ratio of bovine serum albumin（ BSA） is 10. 9%,and the flux recovery ratio is 21%,which implies that the antifouling property is significantly improved relative to the antifouling property of the PES membrane.

关 键 词：聚醚砜 磺化聚砜 共混 超滤膜 

分 类 号：TQ326.55[化学工程—合成树脂塑料工业]