以相转化法制备了磺化聚砜(SPSF)/聚醚砜(PES)共混新型纳滤膜,并研究了磺化聚砜的磺化度以及聚醚砜/磺化聚砜的共混质量比对低分子量PEG的截留率和脱盐率性能的影响.结果表明:在操作压力为0.5 MPa,料液温度为25℃下,当PES/磺化度10％SPSF共混比为6∶4时,SPSF/PES共混膜对PEG1000、PEG800和PEG600的截留率分别为99.8％、81.0％和57.8％,对硫酸钠、氯化钠的截留率分别为69.0％和23.5％,SPSF/PES共混膜的纯水通量为90.3 L/(m2·h).
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