Effects of evaporation time, temperature of evaporation medium and casting solution on properties and structure of poly- (vinyledene fluoride)/polyethersulfone blend membrane
The effects of some membrane preparation conditions on the properties and structure of poly (vinylidene fluoride)/polyethersulfone blend membranes were studied. Poly (vinylidene fluoride) (PVDF) and polyethersulfone (PES) were used as base polymers. Dimethyi acetamide (DMAc) was selected as the solvent and polyvinylpyrrolidone (PVP) was used as pore-forming additive. The preparation variables in this work were evaporation time, temperature of evaporation medium and casting solution temperature. The flat-sheet membranes prepared by phase inversion were characterized by scanning electron microscopy (SEM). Membrane performance was evaluated by pure water flux and retention to bovine serum albumin (BSA). The pure water flux of blend membranes decreases and the retention to BSA increases as the evaporation time extended and the temperature of evaporation medium increased. The retention decreases when the evaporation time exceeds 6 min and the temperature of evaporation midum surpasses 60 ℃. The pure water flux of blend membranes increases and the retention is almost unchanged with casting solution temperature increasing.
WU Lishun SUN Junfen WANG Qingrui
Department of Chemistry and Chemical Engineering, Heze University, Daxue Road 60, Heze,Shandong Prov State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Material
国际会议
2009 International Conference on Advanced Fibers and Polymer Materials(2009年先进纤维与聚合物材料国际学术会议)
上海
英文
563-566
2009-10-21（万方平台首次上网日期，不代表论文的发表时间）