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Preparation and characterization of Function researches about PSf/PPESK blending ultrafiltration membranes

Authors： YU Lanzhe¹, TANG Chengcheng ¹, YUN Yanbing ¹, WANG Lihua ²

Units： 1 College of Environmental Science and Engineering, Beijing Forestry University, 100083, China;

KeyWords： ultrafiltration membrane；blend；PSf；rejection；flux of pure water

ClassificationCode：TQ31

year,volume(issue):pagination： 2011, 31(2):89-94

Abstract：

：The blend ultrafiltration membrane was made using polysulfone (PSF) and poly(phthalazinone ether sulfone ketone) (PPESK) as membrane material by liquid-solid phase inversion method. The effects of blend ratio, polymer concentration and additive concentration upon the fluxes and BSA retention were investigated. The experimental results showed that the optimal preparation parameters were the polymer concentration 12％, blending ratio (m(PSF)／m(PPESK)) 7/3, PEG-4000 as additive content, the coagulation bath temperature 50℃ and evaporation time 10s. The flux of PSf/PPESK membrane was 1930 L/ (m2h) and 58.2% rejection to BSA.
This thesis researched ultrafiltration membrane prepared by using L-S phase inversion method with mixed PSf and PPESK materials. On the basis of the blend method, the effects of blend ratio, polymer concentration, additive concentration etc. were investigated by the flux of pure water and rejection of BSA. The optimized conditions were as follow, the blending ratio of PSf/PPESK: 7/3, the concentration of the blend polymer: 12%, solvent: NMP, additive: PEG4000, the temperature of coagulation bath: 50℃, the evaporation time: 10s. The pure water flux of the membrane is 1.93m3/(m2•h•0.05Mpa), the rejection of BSA is 58.2?%.

Funds：

国家林业局948项目（2009-4-62）；中央高校基本科研业务费专项基金资助

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