Fabrication of Poly(vinylidene fluoride) /Polysulfone Flat Blend Membranes via Thermally Induced Phase Separation Process for Water Treatment  

作　　者：张晶 齐鲁 崔振宇 

机构地区：[1]School of Computer Science & Software Engineering,Tianjin Polytechnic University [2]State Key Laboratory of Separation Membranes and Membrane Processes,School of Material Science and Engineering,Tianjin Polytechnic University

出　　处：《Journal of Donghua University(English Edition)》2016年第5期827-830,共4页东华大学学报（英文版）

基　　金：National Natural Foundation of China(No.51003074)

摘　　要：Poly(vinylidene fluoride) /polysulfone(PVDF/PSF) flat blend membrane was prepared via thermally induced phase separation(TIPS) technique.The membrane formation mechanism and membrane structure were investigated and the effects of PSF/PVDF weight ratio on morphology,crystallinity,porosity,and mechanical properties of the membrane were discussed.The relationship between membrane structure and performances,such as pure water flux and the rejection of carbonic black,was also discussed.It was found that solid-liquid(S-L) phase separation occurred for the PVDF/PSF/diluent system.The addition of PSF influences structure and crystallinity of the membrane,which in turn influences mechanical properties and performances of the membrane.The results reveal that it is possible to obtain network structure via S-L phase separation by blending the polymer,which has a partial compatibility with PVDF.Poly（vinylidene fluoride） /polysulfone（PVDF/PSF） flat blend membrane was prepared via thermally induced phase separation（TIPS） technique.The membrane formation mechanism and membrane structure were investigated and the effects of PSF/PVDF weight ratio on morphology,crystallinity,porosity,and mechanical properties of the membrane were discussed.The relationship between membrane structure and performances,such as pure water flux and the rejection of carbonic black,was also discussed.It was found that solid-liquid（S-L） phase separation occurred for the PVDF/PSF/diluent system.The addition of PSF influences structure and crystallinity of the membrane,which in turn influences mechanical properties and performances of the membrane.The results reveal that it is possible to obtain network structure via S-L phase separation by blending the polymer,which has a partial compatibility with PVDF.

关 键 词：crystallinity fluoride blend thermally porosity rejection viscosity permeation benzene calorimetry 

分 类 号：TQ028.8[化学工程]