The controlling filler aggregation and strengthening interfacial interaction are of great scientific significance for mixed matrix membranes (MMMs). In this study, the polymer‐embedded metal‐organic framework (pMOF) microspheres (MSs) are designed by one‐pot synthesis and employed as microfillers for improving separation performance of MMMs. Through adding polymer during solvothermal crystallization, the polymer chains are embedded into the MOF materials, and the morphologies of the MOFs are transformed from nanopaticles to polycrystalline MSs. Since the embedding of the identical polymer promotes the compatibility of polymeric matrixes and fillers, as well as the micrometer‐sized porous MSs offer additionally superior and permanent transport pathways, the resulted MMMs display simultaneously enhanced selectivity and permeability for carbon capture. The CO₂/CH₄ selectivity and CO₂ permeability of the pMOF MMMs are achieved at 1.3 and 2.2 times as those of the pure polymeric membranes, and 1.5 and 1.2 times as those of the MOF MMMs, respectively.

中文翻译：

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包含聚合物包埋的金属有机骨架微球的混合基质膜

对于混合基质膜（MMM），控制填料的聚集和增强界面相互作用具有重要的科学意义。在这项研究中，聚合物嵌入的金属有机骨架（pMOF）微球（MS）是通过一锅法合成设计的，并用作微填料，以改善MMM的分离性能。通过在溶剂热结晶过程中添加聚合物，聚合物链被嵌入到MOF材料中，并且MOF的形态从纳米颗粒转变为多晶MS。由于相同聚合物的嵌入促进了聚合物基质和填料的相容性，而微米级的多孔MS则提供了额外的优越且永久的运输途径，所得的MMM同时显示出更高的碳捕获选择性和渗透性。一氧化碳pMOF MMM的₂ / CH ₄选择性和CO ₂渗透率分别是纯聚合物膜的1.3和2.2倍，MOF MMM的1.5和1.2倍。