Table 1.

CO₂ and N₂ permeabilities and CO₂/N₂ selectivity of the bulk materials measured in this work compared to reported values in literature.

Material	CO2 Permeability, Barrer	N2 Permeability, Barrer	Ideal Selectivity	Reference
PDMS	3395 ± 55	307 ± 3	11	This work
	3100 a	290	10.7	[23]
	3632 a	330 c	11	[24]
	3800 ± 70 b	400 ± 10 b	9.5	[21]
Pebax-1657	128 ± 17	2.0 ± 0.4	64	This work
	55.8	1.4	40.2	[25]
	80	1.1	70	[29]
	133	2.6 c	52	[30]

^a Measured at 30 °C, ^b measured at 35 °C, ^c Calculated from permeability of CO₂ and CO₂/N₂ selectivity.