PEG–imidazolium-functionalized 6FDA–durene polyimide as a novel polymeric membrane for enhanced CO2 separation. Issue 37 (29th March 2016)

• Record Type: Journal Article
• Authors: Kammakakam, Irshad; Nam, SangYong; Kim, Tae-Hyun
• Is Part Of: RSC advances. Volume 6:Issue 37(2016)
• Page Start: 31083
• Page End: 31091
• Publication Date: 2016-03-29
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1039/c6ra00735j
• Languages: English
• ISSNs: 2046-2069

Abstract

Abstract : A series of poly(ethylene glycol)–imidazolium-functionalized 6FDA–durene polyimides (PEG–Im-PIs) with a range of PEG chain lengths was developed. 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 /N2 (40.1) permselectivities while maintaining a good permeability of polyimide.