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PEG-imidazolium-functionalized 6FDA-durene polyimide as a novel polymeric membrane for enhanced CO<sub>2</sub> separation
- Authors
- Kammakakam, Irshad; Nam, SangYong; Kim, Tae-Hyun
- Issue Date
- Mar-2016
- Publisher
- Royal Society of Chemistry
- Citation
- RSC Advances, v.6, no.37, pp 31083 - 31091
- Pages
- 9
- Indexed
- SCIE
SCOPUS
- Journal Title
- RSC Advances
- Volume
- 6
- Number
- 37
- Start Page
- 31083
- End Page
- 31091
- ISSN
- 2046-2069
- Abstract
- A series of poly(ethylene glycol)-imidazolium-functionalized 6FDA-durene polyimides (PEG-Im-PIs) with a range of PEG chain lengths was developed. The structures and properties of this series, as well as the gas separation properties of the corresponding polymer membranes, were studied. A PEG group and an imidazolium-based ionic group, both of which acted as CO2-solubilizing groups, were incorporated onto a rigid polyimide backbone to yield a very high CO2 solubility and, hence, excellent CO2/CH4 (49.2) and CO2/N-2 (40.1) permselectivities while maintaining a good permeability of polyimide.
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