PDM/PES渗透汽化膜的制备及性能研究  

Preparation and properties of PDM/PES permeation vaporization membrane

作　　者：杨康 刘远远 马凯来 郑景峰 杜润红 YANG Kang;LIU Yuan-yuan;MA Kai-lai;ZHENG Jing-feng;DU Run-hong(School of Material Science and Engineering,Tiangong University,Tianjin 300387,China;State Key Laboratory of Separation Membranes and Membrane Processes,Tiangong University,Tianjin 300387,China)

机构地区：[1]天津工业大学材料科学与工程学院,天津300387 [2]天津工业大学,省部共建分离膜与膜过程国家重点实验室,天津300387

出　　处：《现代化工》2023年第9期120-123,129,共5页Modern Chemical Industry

基　　金：国家重点研发计划资助政府间国际科技创新合作重点专项(2017YFE0114200)。

摘　　要：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/(m^(2)·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℃.

关 键 词：渗透汽化 聚甲基丙烯酸N N-二甲氨基乙酯 脱盐 界面交联 

分 类 号：TQ028.8[化学工程]