聚酰胺薄层复合膜性能劣化机理及表面改性策略  

Deterioration mechanism and modification strategie of polyamide thin film composite membranes

作　　者：杨碧野 姚之侃[1] 林赛赛[1] 张林[1] YANG Biye;YAO Zhikan;LIN Saisai;ZHANG Lin(College of Chemical & Biological Engineering, Center of Membrane and Water Treatment of MOE, Zhejiang University, Hangzhou 310027, China)

机构地区：[1]浙江大学化学工程与生物工程学院,膜与水处理教育部工程中心,杭州310027

出　　处：《膜科学与技术》2020年第3期161-167,共7页Membrane Science and Technology

基　　金：国家重大专项项目(2018ZX07109-003);浙江省自然科学基金重点项目(LZ20B060001)。

摘　　要：聚酰胺薄层复合膜是目前最重要的反渗透/纳滤膜,但在应用过程中易发生包括膜污染和聚酰胺层氧化等现象,影响反渗透/纳滤过程的运行稳定性.本文从膜污染和膜氧化引发的膜性能劣化机理出发,综述了以膜表面改性为主要手段提升聚酰胺薄层复合膜应用稳定性的研究进展;分析和探讨了适用于实际应用过程的改性方法,为聚酰胺薄层复合反渗透和纳滤膜的抗劣化改性提供理论参考.Polyamide-based thin film composite membrane is one of the most popular membrane materials for reverse osmosis and nanofiltration.However,surface fouling and polyamide oxidation always occur in the application process and deteriorate the performance stability.From the view of degradation mechanism triggered by fouling and polyamide oxidation,this paper overviews the research progress in the field of surface modification on polyamide thin film composite membranes to improve application stability.And the critical principles for modification strategies proposed for practical application are further clarified.Overall,this review provides a theoretical reference for the design of surface modification to alleviate stability deterioration in polyamide reverse osmosis and nanofiltration membranes.

关 键 词：聚酰胺 薄层复合膜 膜污染 膜氧化 表面改性 

分 类 号：TQ028.8[化学工程]