Journal
RSC ADVANCES
Volume 6, Issue 37, Pages 31083-31091Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c6ra00735j
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Funding
- Korea Carbon Capture and Sequestration R&D Center under the Korea CCS2020 Program of the Ministry of Education and Science and Technology, Republic of Korea
- National Research Foundation of Korea [2014M1A8A1049311] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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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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