摘要
Abstract
[Objective]Polyamide membranes prepared via interfacial polymerization have emerged as a critical technology for addressing water treatment and resource recovery challenges due to their advantages of low cost,low energy consumption,high selectivity and high permeability.However,the performance of membranes is significantly influenced by various factors,particularly the physicochemical properties of the support layer,which play a crucial role in determining flux and selectivity.Therefore,it is essential to systematically sort out and analyze the structural characteristics and optimization strategies of support layers to elucidate their mechanisms for regulating polyamide membrane performance.[Methods]This paper reviews the effects of support layer properties,including pore size,hydrophilicity,and composite structures on the performance of polyamide composite membranes.Special attention is given to the impact of microfiltration and ultrafiltration membranes as support layers on the formation of the polyamide layer.Additionally,it explores optimization and modification strategies for support layers,such as the introduction of intermediate layers,blending with additives,and reactive support layer technologies,to enhance membrane performance.[Results]Properly regulating pore size facilitates uniform monomer release,reduces defect formation,and prevents amine monomer blockage,thereby achieving a balance between high permeability and selectivity.Optimizing the hydrophilicity of the support layer promotes uniform distribution of aqueous monomers,resultsing in the formation of thinner and more uniform polyamide layers.Furthermore,blending and doping strategies effectively regulate the pore structure and hydrophilicity of the support layer.The introduction of intermediate layers or reactive support layer technologies enhances the interfacial adhesion between the polyamide layer and the support layer,thereby improving the membrane's mechanical strength and resistance to operational stresses.[Conclusion]For future development,the functional design and novel modification of support layers are promising strategies to improve the performance of polyamide composite membranes.Research efforts should focus on simultaneously achieving high flux,high selectivity,and long-term antifouling properties to meet the demands of industrial water treatment and resource recovery applications.These developments will provide both theoretical insights and practical solutions for advancing efficient membrane separation technologies.关键词
界面聚合/聚酰胺/支撑层/微滤/超滤Key words
interfacial polymerization/polyamide(PA)/support layer/microfiltration(MF)/ultrafiltration(UF)分类
资源环境
