Abstract Two different highly cross-linked benzimidazole linked polymers (BILPs) displaying high surface area were successfully incorporated into Matrimid polymer to form a series of new mixed matrix membranes (MMMs). The surface functionality of the BILPs, BILP-4 and BILP-101, were exploited to assure the interaction with the Matrimid matrix and produce robust MMMs, which displayed significantly improved CO 2 gas permeability. The ideal selectivities for CO 2 /N 2 were calculated with enhancements as high as 34% at 15 wt% BILP loading. While BILP-4 and BILP-101 have similar structures and functionality, the two materials have notably different surface areas and CO 2 adsorption capacity. Despite the differences in their gas adsorption properties, MMMs composed of Matrimid/BILP-4 and Matrimid/BILP-101 had very similar gas transport properties. These results suggest that the functional groups of the filler particle and the resulting interaction with the polymer matrix may have had more influence on the gas separation properties of the mixed matrix membrane than the adsorption properties of the fillers.

中文翻译：

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将苯并咪唑连接的聚合物结合到 Matrimid 中以产生具有增强的 CO 2 /N 2 选择性的混合基质膜

摘要 两种不同的具有高表面积的高度交联苯并咪唑连接聚合物（BILPs）成功地掺入到Matrimid聚合物中，形成了一系列新型混合基质膜（MMMs）。BILP、BILP-4 和 BILP-101 的表面功能被用来确保与 Matrimid 基质的相互作用并产生坚固的 MMM，其显示出显着改善的 CO 2 气体渗透性。计算出 CO 2 /N 2 的理想选择性，在 15 wt% BILP 负载下提高了 34%。虽然 BILP-4 和 BILP-101 具有相似的结构和功能，但这两种材料的表面积和 CO 2 吸附能力明显不同。尽管它们的气体吸附特性存在差异，但由 Matrimid/BILP-4 和 Matrimid/BILP-101 组成的 MMM 具有非常相似的气体传输特性。