以磺化聚醚醚酮(SPEEK)为内涂层制备了聚醚砜中空纤维纳滤膜,研究了溶剂、SPEEK磺化度、浓度及后处理温度等参数对膜性能的影响.结果表明,以SPEEK(磺化度0.55)的1％甲醇溶液为涂层溶液,经过30℃后处理6h制得纳滤膜具有较高的通量和离子选择性.其应用于含盐染料废水分离.结果显示,该膜完全截留小分子染料,但是透过单价盐类.该膜为单价/多价盐离子的分离和合盐染料废水的处理提供了一种新的可能性.
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