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- W1635041595 abstract "Abstract Polymeric ionic liquids (PILs) are emerging as promising membrane materials for CO 2 separation. Present work is in continuation with our earlier efforts on evaluating gas permeation properties (especially, CO 2 ) of film forming PILs based on polybenzimidazoles and efforts towards improving their permeability by structural tuning. This work specifically aims at evaluating effect of anion variation in chosen PILs possessing partial N -quaternization of imidazole moiety of PBI-BuI. Three anions (viz., Tf 2 N − , BF 4 − and Ac − ) were chosen for the bromide exchange of two PILs, viz., [TBzPBI-BuI][Br] 10 and [TBzPBI-BuI][Br] 18 , possessing degree of PBI N -quaternization (DQ) as 10 and 18%, respectively. Concurrent effects of variation in anion and DQ were analyzed in terms of physical and gas permeation properties of the resulting PILs. All of them possessed amorphous nature, adequate thermal stability (≥250 °C) and solvent solubility, which are primary requisites towards their applicability as a membrane material. PILs possessing BF 4 − anion exhibited improved CO 2 permeability coefficient as well as its permselectivity over CH 4 and N 2 , in comparison to their counterparts with other anions." @default.
- W1635041595 created "2016-06-24" @default.
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- W1635041595 date "2016-01-01" @default.
- W1635041595 modified "2023-10-11" @default.
- W1635041595 title "Polybenzimidazole based polymeric ionic liquids possessing partial ionic character: Effects of anion exchange on their gas permeation properties" @default.
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- W1635041595 doi "https://doi.org/10.1016/j.memsci.2015.09.019" @default.
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