通过在酚酞基聚芳醚酮(PEK-C)微孔膜表面紫外辐照分步接枝对苯乙烯磺酸钠(SSS)和二甲基二烯丙基氯化铵(DADMAC)制备了一种新型的含有铵基的高通量亲水性复合纳滤膜.通过测定膜的纯水通量和对不同盐溶液的表观截留率的变化,系统研究了接枝时间和操作条件对膜分离性能的影响.结果表明,该复合纳滤膜不仅对高价阴离子盐溶液Na2SO4具有较高的表观截留率和渗透通量,对由高价正离子和高价负离子组成的盐溶液(MgSO4)同样具有较好的截留率.
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