To examine the potential of ion gels as materials for CO 2 separation membranes, inorganic/organic double-network ion gel (DN ion gel) membranes with different ionic liquid (IL) contents were fabricated. The composition of the inorganic and organic networks was optimized to maximize the mechanical strength of the DN ion gel. The DN ion gel with an inorganic/organic network composition of 0.35 mol/mol showed the maximum mechanical strength because the inorganic and organic networks sufficiently acted as sacrificial bonds and hidden lengths, respectively. Using DN ion gel membranes with different IL contents prepared with the optimized precursor solution, the relationship between the CO 2 permeability and IL content of the DN ion gel membranes was examined. The DN ion gel membrane with 95.2 wt% IL had a CO 2 permeability of 1380 barrer, which was ~67% of the theoretical maximum predicted for the pure IL membrane. The CO 2 permeability of the DN ion gel membrane exponentially increased with increasing IL content and approached the theoretical maximum. DN ion gels with high strength can be used to develop maximum-performance IL-based CO 2 separation membranes by giving the membrane the maximum IL potential. The effect of the ionic liquid content in tough inorganic/organic double-network (DN) ion gel membrane on the CO 2 permeability was investigated. By optimizing the composition of the inorganic and organic networks, the mechanical strength of the DN ion gel was significantly increased, and the DN ion gel membrane with more than 95 wt% of an ionic liquid was successfully prepared. With the increase in the ionic liquid content, the CO 2 permeability of the DN ion gel membrane exponentially increased up to ~67% of the theoretical maximum CO 2 permeability.

中文翻译：

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用于CO2分离的高离子液体含量的无机/有机双网络离子凝胶膜

为了检验离子凝胶作为 CO 2 分离膜材料的潜力，制备了具有不同离子液体 (IL) 含量的无机/有机双网络离子凝胶 (DN 离子凝胶) 膜。优化无机和有机网络的组成以最大化 DN 离子凝胶的机械强度。无机/有机网络组成为 0.35 mol/mol 的 DN 离子凝胶表现出最大的机械强度，因为无机和有机网络分别足以充当牺牲键和隐藏长度。使用优化前体溶液制备的具有不同IL 含量的DN 离子凝胶膜，检查了DN 离子凝胶膜的CO 2 渗透性和IL 含量之间的关系。具有 95.2 wt% IL 的 DN 离子凝胶膜的 CO 2 渗透率为 1380 barrer，这是纯 IL 膜预测的理论最大值的 ~67%。DN离子凝胶膜的CO 2 渗透性随着IL含量的增加呈指数增加并接近理论最大值。具有高强度的 DN 离子凝胶可通过赋予膜最大 IL 电位来开发最高性能的基于 IL 的 CO 2 分离膜。研究了坚韧的无机/有机双网络(DN)离子凝胶膜中离子液体含量对CO 2 渗透性的影响。通过优化无机和有机网络的组成，DN离子凝胶的机械强度显着提高，成功制备了离子液体含量大于95wt%的DN离子凝胶膜。随着离子液体含量的增加，