膜
聚氨酯
气体分离
渗透
聚合物
化学工程
材料科学
热稳定性
空气分离
选择性
高分子化学
化学
有机化学
工程类
复合材料
催化作用
氧气
生物化学
作者
Farhad Ahmadijokani,Hossein Molavi,Salman Ahmadipouya,Mashallah Rezakazemi,Ahmadreza Ghaffarkhah,Milad Kamkar,Akbar Shojaei,Mohammad Arjmand
标识
DOI:10.1016/j.pecs.2023.101095
摘要
The membrane process has been considered a promising technology for effective CO2 capture due to its outstanding features, including a small environmental footprint, reduced energy consumption, simplicity of operation, compact design, ease of scalability and maintenance, and low capital cost. Among the developed polymeric materials for membrane fabrication, polyurethane (PU) and poly(urethane-urea) (PUU) as multi-block copolymers have exhibited great potential for CO2 capture because of their excellent mechanical properties, high thermal stability, good film formation ability, favorable permeation properties, and a large diversity of monomers (i.e., polyol, diisocyanate, and chain extender) for the synthesis of desired polymers with prescribed properties. However, PU- and PUU-based membranes' gas selectivity is relatively low and thus not attractive for practical gas separation (GS) applications. Therefore, the present review scrutinizes the main influential factors on the gas transport properties and GS performance of these membranes. In this regard, we summarize the recent progress in the PU-based membranes in view of (I) design and synthesis of new PUs, (II) blending with other polymeric matrices, (III) cross-linking PU membranes, and (IV) fabricating PU-based mixed-matrix membranes (MMMs) with deep insight into an increase in CO2 permeability, as well as CO2/other gases selectivity. Finally, the challenges and future direction of PU-based membranes will be presented.
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