The membrane-based gas separation technique is considered one of the most environmentally benign approaches due to its low energy cost compared with conventional techniques. However, the permeability-selectivity trade-off has been the biggest challenge in the membrane gas separation field. A variety of membrane materials with enhanced gas separation performance, mechanical strength, thermal stability, etc., have been designed. Among them, polyurethane (PU) membranes have been drawing increasing attention. Compared with those high-performing membrane materials, PUs possess relatively lower gas separation performance. However, by careful design, the performance of PU membranes could be improved. Recently, RGFP published a review article to summarize the gas separation performance of reported PU membranes. The gas separation performance of pure PUs and their mixed matrix membranes (MMMs) will be summarized. Current challenges in PU-based gas separation membranes will be discussed. Several novel design routes for PU membranes will also be proposed.

The first author of the paper is Prof. Tao Hong and the corresponding author is Prof. Xinli Jing.

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作为一种绿色环保的气体纯化技术，膜分离技术因其低能耗而受到了广泛关注。然而，渗透率与选择性的平衡一直是膜分离领域的最大挑战。在当前研究的分离膜材料中，聚氨酯（PU）因其良好的的气体分离性能、机械强度和热稳定性，被公认为一种极具潜力的材料。然而，与报道的高性能膜材料相比，聚氨酯膜气体分离性能欠佳。近日，本课题组发表了首篇总结 PU 膜气体分离性能的综述论文。本文总结了当前报道的所有PU 及其混合基质膜 (MMM) 的气体分离性能，同时讨论了改进PU分离膜所面临的难题，并提出了新型PU膜设计路线。

论文的第一作者为洪涛助理教授，通讯作者为井新利教授。