海绵状结构聚醚砜膜的制备及性能表征  

Preparation and performance characterization of sponge-like polyethersulfone membrane

作　　者：黄启顺 魏永明[1] 彭阳峰[1] HUANG Qi-shun;WEI Yong-ming;PENG Yang-feng(Functional Membrane Science and Engineering Research Center,State Key Laboratory of Chemical Engineering,East China University of Science and Technology,Shanghai 200237,China)

机构地区：[1]华东理工大学化学工程联合国家重点实验室,功能膜科学与工程研究中心,上海200237

出　　处：《现代化工》2025年第4期90-95,共6页Modern Chemical Industry

基　　金：国家自然科学基金项目(21978082)。

摘　　要：为了制备高通量海绵状结构聚醚砜平板膜,利用浊点滴定法确定聚醚砜(PES)/N,N-二甲基乙酰胺(DMAc)/一缩二乙二醇(DEG)三元体系浊点相图,通过改变铸膜液邻近比α和膜厚度对PES平板膜结构进行调控。结果表明,随着邻近比α的增大,PES平板膜表面由致密变为多孔结构,膜截面由指状孔结构变为海绵状结构,膜的纯水通量逐渐增大;增大膜厚度,PES平板膜截面结构先保持海绵状结构,后变为指状孔结构。To prepare high-flux sponge-like polyethersulfone(PES)flat membrane,the cloud point titration method is used to determine the cloud point phase diagram of polyethersulfone/N,N-dimethylacetamide/diethylene glycol(PES/DMAc/DEG)ternary system.The structure of PES flat membrane is regulated through varying the proximity ratio(α)of the casting solution and the membrane thickness.Study findings show that asαincreases,the surface of PES flat membrane transitions from dense to porous structure,and the membrane cross-section changes from finger-like pore structure to sponge-like structure,resulting in gradually increasing in pure water flux of the membrane.As the membrane thickness increases,the cross-section structure of PES flat membrane initially maintains the sponge-like structure,but later transforms into a finger-like pore structure.

关 键 词：浊点 相图 聚醚砜 海绵状结构 相转化 

分 类 号：TQ028[化学工程]