Table 5: Variation analysis.

Source Percentage contribution
Diffusivity CO2 Diffusivity H2 Permeability CO2 Permeability H2 Solubility CO2 Solubility H2 Selectivity time lag Selectivity GC method
Temperature:A 14.67 14.36 8.74 47.39 6.81 5.56 44.85 80.78
Pressure: B 9.19 2.18 1.75 17.27 9.95 10.41 17.09 12.32
Polymer concentration: C 50.11 69.45 0.66 9.12 75.36 58.98 15.81 1.96
AB 1.06 3.50 17.82 17.50 0.43 16.77 7.12 3.52
AC 6.89 2.76 18.15 1.92 2.12 2.57 1.33 0.55
BC 8.45 2.88 35.64 0.24 1.01 1.32 13.80 0.53
ABC 9.64 4.88 17.24 6.57 4.32 4.39 0.00 0.34