Preparation, morphologies and properties for flat sheet PPESK ultrafiltration membranes
Preparation, morphologies and properties for flat sheet PPESK ultrafiltration membranes
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DOI：
10.1016/j.memsci.2005.06.050
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发表时间：
2006-02
影响因子：
9.5
通讯作者：
Yanbin Yun;Yunhua Tian;Guoling Shi;Ji-ding Li;Cuixian Chen
中科院分区：
文献类型：
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作者：
Yanbin Yun;Yunhua Tian;Guoling Shi;Ji-ding Li;Cuixian Chen
制备了聚酞嗪酮醚砜酮（PPESK）超滤膜。研究了PPESK浓度、溶剂、添加剂和曝光时间对PPESK超滤膜结构和性能的影响。最佳制备条件为：12wt；% PPESK， NMP/DMAc混合溶剂（质量比=1），8wt。%聚乙二醇400 (PEG400), 2.5wt。% LiCl和5s曝光时间。在此条件下，操作压力为0.1MPa时，纯水通量为1139L/m2h， γ-球蛋白的截留率为93.7%。扫描电镜（SEM）结果显示，暴露时间长或LiCl浓度高，可形成海绵状结构，而手指状结构则被抑制。
Flat sheet poly(phthalazinone ether sulfone ketone) (PPESK) ultrafiltration membranes were prepared. The effects of PPESK concentration, solvents, additives and exposing time on the structure and performance of PPESK ultrafiltration membranes were investigated in more detail. The optimal preparation conditions were: 12wt.% PPESK, NMP/DMAc mixed solvent (mass ratio=1), 8wt.% polyethylene glycol 400 (PEG400), 2.5wt.% LiCl and 5s exposing time. Under these conditions, the pure water flux and the rejection of γ-globulins were 1139L/m2h and 93.7% at the operation pressure of 0.1MPa, respectively. Scanning electron microscope (SEM) micrographs showed that spongy structure could be formed while finger-like structure could be suppressed due to the longer exposing time or higher LiCl concentration.