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Selectivity of CO2/N2 versus permeability of CO2 at 30 °C: blends with PEG-200/-2000 (dark squares), quenched polymers (crosses), multiblock-copolymers (triangles), side chain-copolymers (circles), and, for comparison data, from [11]: Blends of PIM-1 with PEG 20 kg/mol (pale squares). The depicted section of Robeson’s upper bound for CO2/N2 was extracted from [6].
