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蒸发对新型聚芳醚腈酮超滤膜性能的影响
Study on the effect of evaporation on the performance of PPENK ultrafiltration membranes
【摘要】 以聚芳醚腈酮(PPENK)为膜材料,以氮甲基吡咯烷酮为溶剂及添加剂制成稳定的铸膜液,使用水为凝胶浴,相转化法制备PPENK超滤膜.研究了铸膜液在空气中的蒸发温度及时间对超滤膜孔隙率、孔结构、纯水通量及截留率等膜性能的影响.结果表明,在实验室所选择的蒸发时间和蒸发温度范围内这两种因素对超滤膜性能影响不大,通过控制合适的蒸发时间和蒸发温度,可以制得具有高通量和高截留率而且表面无缺陷结构高质量超滤膜.
【Abstract】 The asymmetric flat poly(phthalazinone ether nitrile ketone)(PPENK) ultrafiltration membranes were prepared by using PPENK/NMP/NSA(nonsolvent addtitive)casting solution and water coagulant.The effect of the evaporation time and temperature on membrane properties of hole ratio,flux and clayton-yellow (CY) rejection was investigated. As a result,defect-free UF membranes with good performance can be prepared with proper evaporation time/temperature at relatively lower room humidity.
【关键词】 蒸发;
超滤;
聚芳醚腈酮;
膜制备;
【Key words】 <Keyword>evaporation; ultrafiltration; PPENK; membrane preparation;
【Key words】 <Keyword>evaporation; ultrafiltration; PPENK; membrane preparation;
【基金】 国家863计划基金资助项目(2001AA334020-3);国家973基础研究计划项目(2003CB615700)
- 【文献出处】 膜科学与技术 ,Membrane Science and Technology , 编辑部邮箱 ,2005年03期
- 【分类号】TB383
- 【被引频次】13
- 【下载频次】178