Abstract In this paper, the methods for modification of polymeric membranes with Poly (ethylene oxide) (PEO) and Poly (ethylene glycol) (PEG) for CO2 separation is reviewed. PEO-containing membranes considered due to their proper CO2 separation performances and simplicity in fabrication. However, high crystallization tendency and mechanical strength of these PEG-based membranes have limited their applications on commercial scale. Hence, various methods have been proposed to overcome these shortcomings and improve the performance of the membranes, such as blending with other polymers or the formation of new chemical structures by copolymerization and crosslinking. In this paper, the state-of-the-art for the polymeric membranes containing PEO or PEG for CO2 separation is investigated and the separation performance of each category is evaluated and finally, future research directions and recommendations in this field are proposed. According to the present study, in general, although the mixed matrix membranes have shown excellent performances for carbon dioxide separations, the ionic liquid containing membranes also have offered high permeability and selectivity than the other types of membranes, and it seems that the MMMs containing ILs would be promising for future generation membranes.

中文翻译：

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用于二氧化碳分离的 PEO 和 PEG 聚合物膜的最先进改性：当前状态和未来前景的回顾

摘要 本文综述了用聚环氧乙烷(PEO) 和聚乙二醇(PEG) 改性用于CO2 分离的聚合物膜的方法。考虑到含 PEO 的膜具有适当的 CO2 分离性能和制造简单性。然而，这些基于 PEG 的膜的高结晶倾向和机械强度限制了它们在商业规模上的应用。因此，人们提出了各种方法来克服这些缺点并提高膜的性能，例如与其他聚合物共混或通过共聚和交联形成新的化学结构。在本文中，研究了用于 CO2 分离的含有 PEO 或 PEG 的聚合物膜的最新技术，并评估了每个类别的分离性能，最后提出了该领域的未来研究方向和建议。根据目前的研究，虽然混合基质膜在二氧化碳分离方面表现出优异的性能，但含有离子液体的膜也比其他类型的膜具有更高的渗透性和选择性，似乎含有离子液体的 MMMs将有望用于下一代膜。