Polyimide membranes and network hybrid membranes exhibit high permeability despite good thermal and chemical stability, and high selectivity in gas mixture separation. In this study, the effect of nanoparticle distribution on the network polymer network, and changes in permeability, selectivity, and structure of the composite lattice membrane are investigated. According to the obtained permeability results, this increase in permeability was due to the increase of polymer network free volume and the formation of cavities in the nanoparticle-polymer interface. The significant results were that the permeability growth of gases with larger molecular size such as methane and nitrogen was higher than other gases. A comparison of the permeability growth of gases with the increasing volume fraction of nanoparticles confirms the dominance of the molecular sieve mechanism and the type of membrane transport mechanism change over polyimide and network Hybrid.

中文翻译：

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纳米颗粒对聚酰亚胺膜和网络混合膜的透气性的影响：综述

尽管具有良好的热和化学稳定性，但聚酰亚胺膜和网络混合膜仍显示出高渗透性，并且在气体混合物分离中具有高选择性。在这项研究中，研究了纳米颗粒分布对网络聚合物网络的影响，以及复合晶格膜的渗透性，选择性和结构的变化。根据获得的渗透性结果，这种渗透性的增加是由于聚合物网络自由体积的增加以及在纳米颗粒-聚合物界面中形成空腔所致。显着的结果是，具有较大分子大小的气体（例如甲烷和氮气）的渗透率增长高于其他气体。