Poly(ionic liquid)s-based polyurethane blends: effect of polyols structure and ILs counter cations in CO2 sorption performance of PILs physical blends

Carbon dioxide (CO2) capture from natural gas, and further utilization is an essential issue for greenhouse gas reduction. Poly(ionic liquid)s (PILs) assemble ILs unique properties, with those of polymers being versatile materials CO2 flue (CO2/N2) (CO2/CH4). PILs based on polyurethanes obtained different polyols cations were blended in proportions aiming to improve sorption capacity. Two structures (PC PG) counter (imidazolium phosphonium) tested evaluate how they influence blends performance. characterized by SEC, FTIR, DSC, TGA, DMTA, AFM, that carried out using the pressure-decay technique. presented good thermal stability mechanical properties. blend polyurethane backbones compositions can be tuned increase As far as we know, all higher capacity results compared other reported literature. The best result was PIL imidazolium (PLIPC95-PG5-BMIM = 116.9 mgCO2/g at 303.15 K 10 bar).