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PEG-imidazolium-incorporated polyimides as high-performance CO2-selective polymer membranes: The effects of PEG-imidazolium content
- Issue Date
- 31-May-2017
- Publisher
- ELSEVIER SCIENCE BV
- Keywords
- Polymer membranes; Gas separation; CO2-solubility; Poly(ethylene glycol)-imidazolium; Permeability-selectivity
- Citation
- SEPARATION AND PURIFICATION TECHNOLOGY, v.179, pp 283 - 290
- Pages
- 8
- Indexed
- SCIE
SCOPUS
- Journal Title
- SEPARATION AND PURIFICATION TECHNOLOGY
- Volume
- 179
- Start Page
- 283
- End Page
- 290
- ISSN
- 1383-5866
1873-3794
- Abstract
- 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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