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用于气体分离的聚酰亚胺膜的进展：合成、改性及应用

Advances in Polyimide Membranes for Gas Separation: Synthesis, Modification, and Application.

作者信息

Zhang Qiu-Ying, Mao Heng, Wen Meng, Chen Bing-Hong, Li Qian-Qian, Zhang Yan-Mei, Zhao Zhi-Ping

机构信息

School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 102488, China.

出版信息

Molecules. 2025 Aug 27;30(17):3507. doi: 10.3390/molecules30173507.

DOI:10.3390/molecules30173507
PMID:40942035
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC12430044/
Abstract

Membrane technology is widely used in gas separation processes due to its small footprint, high energy efficiency, and favorable economic viability. The current membrane market predominantly relies on polymer membranes, among which polyimide (PI) membranes stand out as highly promising materials due to their superior gas separation performance coupled with exceptional thermal and chemical stability. However, traditional polyimide membranes suffer from low gas permeability and insufficient plasticization resistance, hindering their broader industrial application. In order to meet the demands of more stringent application fields, it is crucial to further improve their gas performance and anti-plasticization to enhance their cost-effectiveness. Consequently, it is essential to modify traditional polyimides and formulate membrane fabrication strategies to solve these problems. This review introduces the monomer structures and synthesis approaches of polyimides, including solution-based and solid-state thermal condensation. Then, we propose representative preparation methods of polyimide-based membranes. Additionally, modification strategies, including thermal rearrangement, cross-linking, and physical blending, are summarized, which address the critical issues in contemporary polyimide-based gas separation membranes. Finally, this review critically discusses the current challenges and prospects for developing polyimide membranes for gas separation.

摘要

膜技术因其占地面积小、能源效率高和经济可行性良好而广泛应用于气体分离过程。当前的膜市场主要依赖聚合物膜，其中聚酰亚胺（PI）膜因其卓越的气体分离性能以及出色的热稳定性和化学稳定性而成为极具前景的材料。然而，传统聚酰亚胺膜存在气体渗透性低和抗增塑性能不足的问题，这阻碍了它们在更广泛工业领域的应用。为了满足更严苛应用领域的需求，进一步提高其气体性能和抗增塑能力以增强成本效益至关重要。因此，对传统聚酰亚胺进行改性并制定膜制备策略以解决这些问题必不可少。本综述介绍了聚酰亚胺的单体结构和合成方法，包括基于溶液的和固态热缩聚。然后，我们提出了聚酰亚胺基膜的代表性制备方法。此外，还总结了改性策略，包括热重排、交联和物理共混，这些策略解决了当代聚酰亚胺基气体分离膜中的关键问题。最后，本综述批判性地讨论了开发用于气体分离的聚酰亚胺膜当前面临的挑战和前景。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/461e/12430044/8d5bfc3a832a/molecules-30-03507-g013.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/461e/12430044/04372d219bd2/molecules-30-03507-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/461e/12430044/9ddee1501a62/molecules-30-03507-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/461e/12430044/b58cfd675d4e/molecules-30-03507-g007.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/461e/12430044/8d5bfc3a832a/molecules-30-03507-g013.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/461e/12430044/17b0ba7b1bc3/molecules-30-03507-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/461e/12430044/cb7d88aefef4/molecules-30-03507-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/461e/12430044/74d7e55fd40c/molecules-30-03507-g012.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/461e/12430044/d9f0001b532b/molecules-30-03507-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/461e/12430044/e14a640b7acc/molecules-30-03507-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/461e/12430044/66f1979dfa6f/molecules-30-03507-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/461e/12430044/04372d219bd2/molecules-30-03507-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/461e/12430044/9ddee1501a62/molecules-30-03507-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/461e/12430044/b58cfd675d4e/molecules-30-03507-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/461e/12430044/be391d1d0da4/molecules-30-03507-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/461e/12430044/7fbfa621177a/molecules-30-03507-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/461e/12430044/814a1b7e8790/molecules-30-03507-g011.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/461e/12430044/8d5bfc3a832a/molecules-30-03507-g013.jpg

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