01966nas a2200217   4500008004100000022001400041245014600055210006900201260009900270300001000369490000700379520107700386653001901463653001401482653002801496100002601524700002101550700002801571700002201599856012701621       2016                        eng d  a0032-386100aIncorporation of rigid polyaromatic groups in polybenzimidazole-based polymeric ionic liquids: assertive effects on gas permeation properties0 aIncorporation of rigid polyaromatic groups in polybenzimidazoleb  aTHE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLANDbELSEVIER SCI LTDcJUN  a30-360 v933 a<p>Polymeric ionic liquids (PILs) have emerged as promising membrane materials for CO2 separation. The present work is aimed at investigating the effects of incorporation of rigid polyaromatic hydrocarbons, viz., pyrene and anthracene, in polybenzimidazole-based PILs. The effects of substituent and anion variation on the gas permeation properties of PILs using pure gases were examined at 20 atm upstream pressure. The results were correlated with physical properties of PILs. The pyrene substituted PIL exhibited similar to 10 fold increase in CO2 permeability as compared to its precursor polymer PBI-BuI. The combination of a CO2 specific anion and bulky group substitution offered higher CO2 permeability as well as appreciable permselectivity than their structural analogue that was devoid of IL functionality. The permeation properties of present PILs were superior to those of conventional glassy polymers such as polysulfone, matrimid and polycarbonate which are widely studied for their gas permeation properties. (C) 2016 Elsevier Ltd. All rights reserved.</p>10aGas permeation10amembranes10aPolymeric ionic liquids1 aShaligram, Sayali, V.1 aRewar, Anita, S.1 aWadgaonkar, Prakash, P.1 aKharul, Ulhas, K.  uhttps://library.ncl.res.in/content/incorporation-rigid-polyaromatic-groups-polybenzimidazole-based-polymeric-ionic-liquids