采用界面聚合的方法制备了聚甲基丙烯酸N，N-二甲氨基乙酯（PDM）/聚醚砜（PES）渗透汽化脱盐膜，通过SEM、XPS对膜的微观结构和表面化学元素进行表征。考察了原料液质量浓度、进料液温度对膜的水通量和脱盐率的影响，并监测了膜的长期运行稳定性。结果表明，PDM质量浓度为16 g/L、进料液温度为50℃、进料NaCl水溶液质量浓度为35 g/L时，PDM/PES膜的水通量达到13.7 kg/（m²·h），截留率高达99.9%。

Poly(N, N-dimethyl aminoethyl methacrylate)/poly(ether sulfone) pervaporation desalination membranes are prepared through interfacial polymerization method, and the microstructure and surface chemical elements of the membranes are characterized by means of SEM and XPS.The effects of feed concentration and feed temperature on the water flux and salt rejection of the membranes are investigated, and the long-term operational stability of the membranes is monitored.It is shown that the water flux of the PDM/PES membrane reaches 13.7 kg·m^-2·h^-1 with a salt rejection of 99.9% when the concentration of PDM is 16 g·L^-1, the concentration of feed NaCl aqueous solution is 35 g·L^-1 and the feed temperature is 50℃.

杨康(1996-),男,硕士研究生,研究方向为膜分离工程,15589034750@163.com