Finely tuning the microporosity in dual thermally crosslinked polyimide membranes for plasticization resistance gas separations
文献类型：期刊论文
| 作者 | Wang, Can3,4,5; Cai, Zhili5; Xie, Wei5; Jiao, Yang5; Liu, Lu5; Gong, Lili5; Zhang, Qi-Wei6; Ma, Xiaohua1; Zhang, Hongjun2; Luo, Shuangjiang3,4,5 |
| 刊名 | Journal of Membrane Science
 |
| 出版日期 | 2022-10-05 |
| 卷号 | 659 |
| 关键词 | Carbon dioxide - Carboxylation - Crosslinking - Gas permeable membranes - Gases - Heat treatment - Microporosity - Separation - Temperature |
| ISSN号 | 3767388 |
| DOI | 10.1016/j.memsci.2022.120769 |
| 英文摘要 | Thermally induced chemical crosslinking has attracted substantial attention for fabricating plasticization resistant membranes due to the facile structure tunability that enables the construction of robust and well-defined architecture for gas separation. In this study, we report a new series of dual thermally crosslinkable polyimides derived from 4,4鈥?diamino-2,2鈥?biphenyldicarboxylic acid (DCB) containing two carboxyl groups, and a systematic investigation of the thermal treatment above and below Tg demonstrated the decarboxylation-induced crosslinking. The dual thermally crosslinked membranes were insoluble in common organic solvents and maintained excellent mechanical properties. Due to the evolution of CO2 and collapse of chain segments during thermal treatment, the crosslinked membranes exhibited hierarchical microcavity size distribution featuring ultra-micropore size in the range of 2.0鈥?.0 脜 and micropore size in the range of 6.5鈥?0.0 脜. Gas transport properties of the crosslinked membranes were feasibly tuned through the chemical compositions and thermal treatment procedures. For instance, the CO2 permeability of crosslinked 6FDA-DAM0.7-TFMB0.1-DCB0.2 increased almost three-fold with only a slight decrease in CO2/CH4 selectivity. The crosslinked membranes also demonstrated superior plasticization resistance with mixed-gas feed pressure up to 40 bar and excellent low-temperature gas separation performance at 鈭?0 掳C, making them attractive for aggressive gas separations. 漏 2022 Elsevier B.V. |
| 学科主题 | Polyimides |
| 项目编号 | The authors gratefully acknowledge the financial support from the Dalian National Laboratory for Clean Energy (DNL) Cooperation Fund of CAS ( DNL201917 ), Beijing Nova Program of Science and Technology ( Z191100001119107 ), the Project of Stable Support for Youth Team in Basic Research Field of CAS ( YSBR-017 ), the Self-deployed Projects of Ganjiang Innovation Academy, CAS ( E055A002 ), and the National Natural Science Foundation of China (NSFC, 21904040 , 11975225 ). |
| 出版者 | Elsevier B.V. |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/61315]  |
| 作者单位 | 1.State Key Laboratory of Separation Membranes and Membrane Processes, National Center for International Joint Research on Membrane Science and Technology, Tiangong University, Tianjin; 300387, China 2.State Key Laboratory of Particle Detection and Electronics, University of Science and Technology of China, Hefei; 230026, China 3.School of Rare Earths, University of Science and Technology of China, Hefei; 230026, China 4.Ganjiang Innovation Academy, Chinese Academy of Sciences, Ganzhou; 341119, China 5.CAS Key Laboratory of Green Process and Engineering, State Key Laboratory of Multiphase Complex Systems, Beijing Key Laboratory of Ionic Liquids Clean Process, Institute of Process Engineering, Chinese Academy of Sciences (CAS), Beijing; 100190, China 6.Shanghai Key Laboratory of Green Chemistry and Chemical Processes, Department of Chemistry, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai; 200241, China |
| 推荐引用方式 GB/T 7714 | Wang, Can,Cai, Zhili,Xie, Wei,et al. Finely tuning the microporosity in dual thermally crosslinked polyimide membranes for plasticization resistance gas separations[J]. Journal of Membrane Science,2022,659. |
| APA | Wang, Can.,Cai, Zhili.,Xie, Wei.,Jiao, Yang.,Liu, Lu.,...&Luo, Shuangjiang.(2022).Finely tuning the microporosity in dual thermally crosslinked polyimide membranes for plasticization resistance gas separations.Journal of Membrane Science,659. |
| MLA | Wang, Can,et al."Finely tuning the microporosity in dual thermally crosslinked polyimide membranes for plasticization resistance gas separations".Journal of Membrane Science 659(2022). |
入库方式： OAI收割
来源：过程工程研究所
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