Effect of Solvent on CO2 Sorption Capacity in Supported Ionic Liquid Membranes
AIChE Annual Meeting
2023
2023 AIChE Annual Meeting
Annual Student Conference: Competitions & Events
Undergraduate Student Poster Session: Separations
Monday, November 6, 2023 - 10:00am to 12:30pm
In this study, we employed 1-ethyl-3-methylimidazolium bis (trifluoromethyl sulfonyl) imide ([Emim][TF2N]) as the ionic liquid and poly (vinylidene fluoride) (PVDF) as the host polymer to fabricate the SILMs. We conducted CO2 sorption measurements using a quartz crystal microbalance (QCM) gas sorption system. To cast and fabricate SILMs, different solvents were investigated. Dimethylacetamide (DMAc) was shown to be the best solvent choice over dimethylformamide (DMF), dimethyl sulfoxide (DMSO), or triethyl phosphate (TEP). This was attributed to the variation in PVDF crystallinity and the formation of distinct phases when cast from different solvents. Our polarized microcopy data revealed a direct correlation between macroscale structural variations and gas sorption capacities in SILMs.