聚酰胺薄层复合膜的耐氯改性研究进展

Research progress on chlorine resistance improvement of polyamide thin film composite membrane

易氯化降解制约了聚酰胺薄层复合膜(PA-TFC膜)在脱盐和工业分离等领域的进一步推广和应用.对此,本文归纳了PA-TFC膜受活性氯攻击的氯化机理研究现状,在此基础上,从复合膜结构出发,着重综述了该类型膜耐氯改性的最新研究进展,包括表面改性、PA层改性、支撑层改性和构筑新型耐氯分离层.最后进行总结并作出展望,以期为提升PA-TFC膜的耐氯性能及长期运行稳定性提供参考.

The susceptibility to chlorination degradation has limited the further promotion and application of polyamide thin film composite membranes(PA-TFC membranes)in desalination and industrial separation fields.In this regard,this paper summarizes the current status of research on the chlorination mechanism of PA-TFC membranes attacked by active chlorine.On this basis,we review the latest research progress on chlorine-resistant modification of PA-TFC membranes from the composite membrane structure,including surface modification,PA layer modification,support layer modification and construction of new chlorine-resistant separation layer.Finally,a summary and an outlook are given to provide references for improving the chlorine resistance and long-term operational stability of PA-TFC membranes.