期刊
SEPARATION AND PURIFICATION TECHNOLOGY
卷 179, 期 -, 页码 283-290出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.seppur.2017.02.020
关键词
Polymer membranes; Gas separation; CO2-solubility; Poly(ethylene glycol)-imidazolium; Permeability-selectivity
资金
- Korea Carbon Capture and Sequestration R&D Center under the Korea CCS Program of the Ministry of Education and Science and Technology, Republic of Korea
- Incheon National University Research Fund
Poly(ethylene glycol)-imidazolium-functionalized 6FDA-durene polyimides (PEG-Im-Pls) with various amounts of PEG-Im attached to the polyimide were synthesized. The structures and properties of these polymers were analyzed, as were the gas-separation properties of the various membranes made from each of these polymers. Attaching PEG and ionic imidazolium groups to the rigid polyimide backbone resulted in membranes that dissolved a lot of CO2 and hence showed excellent CO2/CH4 (up to 42.0) and CO2/N-2 (up to 37.1) permselectivity values. These membranes at the same time displayed good permeability levels, with values as high as 464 Barrer. (C) 2017 Elsevier B.V. All rights reserved.
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