中文摘要：

以等离子体引发方法制备聚（N-异丙基丙烯酰胺）（PNIPAAm）接枝的聚丙烯（PP）多孔膜。在考察改性膜表面润湿及水通量温敏性的基础上，详细研究改性膜在处理乳化油废水时的油水分离及变温清洗性能。结果表明：因表面亲水性改善，改性膜在低临界溶解温度（ LCST）以下油水分离时的通量衰减明显减缓，在LCST以上的稳定通量明显增大，油截留率超过了99％。经简单的变温（35℃／25℃）水清洗，污染膜的水通量恢复率达89.7％。PNIPAAm的体积相转变是改性膜表面易清洗的原因。

英文摘要：

The poly（N-isopropylacrylamide） （PNIPAAm） grafted porous polypropylene （PP） membrane was prepared by a plasma method. After investigation on both thermosensitive behaviors of surface wettability and water flux for the modified membrane, its performances of oil/water separation and temperature-change cleaning were evaluated in detail. Benefiting from hydrophilic improvement on the surface,the modified membrane exhibited significant relief in flux decline below the lower critical solution temperature （ LCST） of PNIPAAm and showed much larger steady fluxes above the LCST in the oil/water separation.Simultaneously,the modified membrane acquired an oil retention rate exceeding 99%.After the oil/water separation, the fouled membrane could reach a water flux recovery of 89.7% via a simple temperature-change water cleaning performed at 35 ℃ and 25 ℃ alternately.The volume-phase transition of PNIPAAm was responsible for the easy-cleaning performance of the modified membrane surface.