Table 1.

Permeability coefficients of CO₂ through the nanolaminates at different R.H. levels.

Nanolaminate/Permeating Gas	P [mol∙m∙m−2∙Pa−1∙s−1]	P [Barrer]
PMMA/CO2	21.9 (±0.8) × 10−17	6.5 (±0.2) × 10−1
Gr-PMMA/CO2	1.30 (±0.1) × 10−17	0.39 (±0.03) × 10−1
PMMA/CO2-H2O @RH = 0.50	19.0 (±0.1) × 10−17	5.67 (±0.03) × 10−1
Gr-PMMA/CO2-H2O @RH = 0.50	1.0 (±0.1) × 10−17	0.30 (±0.03) × 10−1
PMMA/CO2-H2O @RH = 0.80	18.3 (±0.5) × 10−17	5.5 (±0.2) × 10−1
Gr-PMMA/CO2-H2O @RH = 0.80	1.7 (±0.1) × 10−17	0.51 (±0.03) × 10−1