This study deals with the fabrication of hollow fiber mixed matrix membrane, and evaluation its performance toward O₂/N₂ gas separation. Asymmetric mixed matrix PES membranes with embedded ZIF-8 nanoparticles as the dispersed phase were prepared by dry–wet-spinning method. The morphological, thermal, and chemical properties of spun fibers were characterized by FESEM, EDS mapping, TGA, and FTIR analysis. Effect of spinning parameters and dope composition including bore fluid/ dope flow rate ratio (0.5, 1, 2), bore fluid composition (Water/NMP: 100:0, 50:50, 75:25), polymer concentration (20%, 25%, 30%), and ZIF-8 concentration (0–40%wt at seven stages) were investigated on the morphology of hollow fiber MMMs. In addition, pure O₂ and N₂ gas permeation through the fibers was tested in order to figure out the effect of different ZIF-8 content embedded in hollow fiber MMMs on the ideal selectivity of O₂/N₂ separation. Results revealed that the maximum separation performance (ideal selectivity of 5.25) was attained at the ZIF-8 weight content of 10%. The improved performance of hollow fiber MMMs over O₂/N₂ gas separation could be related to increment in both sieving and solubility selectivity.

本研究涉及中空纤维混合基质膜的制备，并评估其对 O ₂ /N ₂气体分离的性能。采用干湿纺法制备了嵌入 ZIF-8 纳米颗粒作为分散相的不对称混合基质 PES 膜。通过 FESEM、EDS 映射、TGA 和 FTIR 分析表征纺成纤维的形态、热和化学性质。纺丝参数和原液成分的影响，包括孔液/原液流速比（0.5、1、2）、孔液成分（水/NMP：100:0、50:50、75:25）、聚合物浓度（20%、 25%、30%) 和 ZIF-8 浓度（0-40%wt 在七个阶段）对中空纤维 MMM 的形态进行了研究。此外，纯 O ₂和 N ₂测试了气体对纤维的渗透性，以确定嵌入中空纤维 MMM 中的不同 ZIF-8 含量对 O ₂ /N ₂分离的理想选择性的影响。结果表明，在 ZIF-8 重量含量为 10% 时获得了最大的分离性能（理想的选择性为 5.25）。中空纤维 MMMs 在 O ₂ /N ₂气体分离方面的改进性能可能与筛分和溶解选择性的增加有关。