静电纺丝聚砜支撑层制备正渗透复合膜  

Preparation of Composite Forward Osmosis Membrane by Electrospun Polysulfone Substrates

作　　者：张翠翠[1] 黄满红[1] 李贝贝[1] 李亚丹[1] ZHANG Cuicui HUANG Manhong LI Beibei LI Yadan(College of Environmental Science and Engineering, State Environmental Protection Engineering Center for Pollution Treatment and Control in Textile Industry, Donghua University, Shanghai 201620, China)

机构地区：[1]东华大学环境科学与工程学院,国家环境保护纺织污染防治工程技术中心,上海201620

出　　处：《水处理技术》2017年第8期44-49,共6页Technology of Water Treatment

基　　金：国家自然科学基金资助项目(21477018,21007010);中央高校基本科研业务费专项资金重点项目(15D111323)

摘　　要：采用静电纺丝法制备了聚砜(PSf)纳米纤维作为正渗透复合膜的支撑层,在此基础上通过界面聚合反应制备了正渗透膜。考察了纺丝液自身性质,PSf含量以及溶剂N,N-二甲基甲酰胺(DMF)与N-甲基-2-吡咯烷酮(NMP)比例对PSf支撑层微观结构及其性能影响。结果表明,纺丝液的PSf质量分数为20%,NMP/DMF体积比为3/7时得到的纺丝纤维均匀无瑕疵,平均纤维直径为396 nm,平均孔径为1.34μm,孔隙率为75.77%。经界面聚合反应在PSf支撑层表面形成聚酰胺活性层,经测试其水通量为42.17 L/(m^2·h),比3种商品膜水通量提高了3倍以上。Polysulfone nanofibers were prepared by eleetrospinning and using it as substrates to make high-quality thin film nanocomposite forward osmosis membrane. Effect of spinning solution properties, P.SF content and the ratio of N,N-Dimethylformamide and 1-Methyl-2-pyrrolidinone on morphological and characterization of substrates was explored. The results showed that the morphology ofnanofibers were uniform and flawless when the m^s fraction of PSfof spinning dope was 20% and solvent volume ratio of 1-Methyl-2-pyrrolidinone and N,N-Dimethylformamide was 3/7. The average fiber diameter, average pore size, porosity and of the substrates was 396 nm, 1.34 μm and 75.77%, respectively. The polymer active layer was formed by interfaeial polymerization on the surface ofPSf substrate successfully. After the test, the average water flux was 42.17 L/（m2-h）, it was higher than commercial membranes more than three times.

关 键 词：正渗透复合膜 静电纺丝 聚砜 支撑层 

分 类 号：TQ028.8[化学工程]