【摘 要】
：
Polyvinyl chloride (PVC) flat sheet membranes with high tensile strength were fabricated via immersion precipitation phase inversion method used DMAc/DOP as
【机 构】
：
State Key Laboratory of Separation Membranes and Membrane Processes/National Center for Internationa
【出 处】
：
2018(第十三届)青岛国际水大会
论文部分内容阅读
Polyvinyl chloride (PVC) flat sheet membranes with high tensile strength were fabricated via immersion precipitation phase inversion method used DMAc/DOP as the mixed solvents.The influences of DOP content in mixed solvents on structure and performance of prepared PVC flat sheet membranes were investigated by morphology, pure water flux, porosity and mechanical property measurements.The results showed that the addition of PVP could effectively promote the growth of the finger-like structure which could increase the membrane pure water flux.With the increase of the DOP weight fraction, the cross section structure became denser and the membrane surface pore size became larger.The increase of the DOP weight fraction brought about the increase of membrane hydrophilicity, but decreased the membrane porosity and protein rejection.The membrane obtained the maximum tensile strength of 12.15 MPa as the DOP weight fraction reached 10 wt%, and the membrane pure water flux was 51.80 L/(m2·h).
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