Alkyl imidazolium-functionalized cardo-based poly(ether ketone)s as novel polymer membranes for O-2/N-2 and CO2/N-2 separations
- Title
- Alkyl imidazolium-functionalized cardo-based poly(ether ketone)s as novel polymer membranes for O-2/N-2 and CO2/N-2 separations
- Author
- 박호범
- Keywords
- Imidazolium-based ionic salt; Polymer membranes; Gas separation; GAS-TRANSPORT PROPERTIES; TEMPERATURE IONIC LIQUIDS; PRESSURE CARBON-DIOXIDE; HYDROCARBON SOLUBILITIES; CO2 SELECTIVITY; PERMEABILITY; PERFORMANCE; POLYSULFONES; NITROGEN
- Issue Date
- 2013-07
- Publisher
- ELSEVIER SCI LTD, THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND
- Citation
- Polymer,2013,54(14),p3534-3541
- Abstract
- Alkyl imidazolium-functionalized poly(ether ketone)s (Im-PEKs) were prepared as novel polymer membranes for O-2/N-2 and CO2/N-2 separations. The Im-PEK polymers were synthesized by poly-condensation between difluoro- and dihydroxy-monomers, followed by benzylic bromination and alkyl imidazolium-functionalization. The polymers with pendant imidazolium-based ionic salts showed high CO2 solubility and hence a very high CO2/N-2 permselectivity of 66.1 due to their high solubility selectivity. In addition, the Im-PEK with long alkyl chain ([C-12-Im-PEK][Br]) displayed an extraordinary high O-2/N-2 permselectivity of 15.5 due to its enhanced diffusivity selectivity. Overall, the combined O-2/N-2 and CO2/N-2 separation properties were achieved in single polymeric membrane. The Im-PEK membranes also displayed good thermal and mechanical stabilities. (C) 2013 Elsevier Ltd. All rights reserved.
- URI
- http://www.sciencedirect.com/science/article/pii/S0032386113004278?via%3Dihubhttp://hdl.handle.net/20.500.11754/44146
- ISSN
- 0032-3861
- DOI
- 10.1016/j.polymer.2013.05.006
- Appears in Collections:
- COLLEGE OF ENGINEERING[S](공과대학) > ENERGY ENGINEERING(에너지공학과) > Articles
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