New Pyridinium Type Poly(Ionic Liquids) as Membranes for CO₂ Separation.

ABSTRACT: New pyridinium based PILs have been prepared by modification of their precursors based on high molecular weight aromatic polyethers bearing main chain pyridine units. The proposed methodology involves the conversion of the precursors to their ionic analogues via N-methylation reaction, followed by anion exchange methathesis reaction to result in PILs with the desirable anions (tetrafluoroborate and bis(trifluoromethylsulfonyl)imide). These PILs show excellent thermal stability, excellent mechanical properties, and most importantly can form very thin, free standing films with minimum thickness of 3 μm. As expected, the PIL containing the TFSI- anion showed improved CO₂ and CH₄ permeabilities compared to its analogue containing the BF₄-. PIL-IL composites membranes have also been prepared us

SUBMITTER: Vollas A 

PROVIDER: S-EPMC6403706 | biostudies-literature | 2018 Aug

REPOSITORIES: biostudies-literature