中文摘要：

以聚氯乙烯（PVC）中空纤维超滤膜为基膜,以哌嗪（PIP）为水相单体、均苯三甲酰氯（TMC）为有机相单体,通过界面聚合法制备中空纤维复合纳滤膜。着重研究了水相涂覆后吹扫工艺对超薄分离层完整性及膜分离性能的影响规律,进而研究了各制膜因素的影响。所制备的纳滤膜在0.35 MPa,25℃条件下,对1 000mg/L硫酸镁（MgSO4）水溶液的截留率为96.4%,相应通量为24.1L/（m2·h）。

英文摘要：

A PVC-based hollow fiber composite nanofiltration （NF） membrane was fabricated via interracial polymerization of piperazine （PIP） and trimesoyl chloride （TMC）. The effects of preparation conditions （concentration of the monomers, flow rate of purge gas and sweeping time） on the performance of the hollow fiber NF membranes were studied. When tested at 0.35 MPa, room temperature, the obtained membrane exhibited a MgSO4 rejection of 96.4% and a flux of about 24.1 L/（m2 · h）.