Outer-selective thin film composite (TFC) hollow fiber membranes have the advantages of fiber blockage with less pressure drop and high surface area module. This work highlights novel strategies to design continuous interfacial polymerization that can allow mass production, performance controllability, and small margin of error in performance. Processing parameters were symmetrically optimized to maximize high water flux and salt rejection using poly(piperazine-amide) TFC membranes. For further improving the membrane performance, polyvinyl alcohol was incorporated for an interlayer, thereby having the water flux of 48 LMH/bar and the salt rejection (Na₂SO₄) of 99.6%. The system can be used in a variety of applications such as reverse osmosis, forward osmosis, or gas separations by simply replacing the monomers.

外选择性薄膜复合（TFC）中空纤维膜具有纤维堵塞少、压降小、表面积模量高等优点。这项工作突出了设计连续界面聚合的新策略，可以实现大规模生产、性能可控和性能误差范围小。使用聚（哌嗪-酰胺）TFC 膜对加工参数进行对称优化，以最大限度地提高水通量和盐截留率。为了进一步提高膜性能，中间层加入了聚乙烯醇，从而具有48 LMH/bar的水通量和脱盐率（Na ₂ SO ₄) 的 99.6%。通过简单地更换单体，该系统可用于多种应用，例如反渗透、正向渗透或气体分离。