Table 2 Summary of permeability parameters for the four gases in NBR, EPDM, LDPE and HDPE.
From: Characterization technique of gases permeation properties in polymers: H2, He, N2 and Ar gas
Specimen | Solubility (mol/m3 ·MPa) | Diffusivity (× 10–11 m2/s) | Permeability (mol/m s MPa, × 10–10) | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
H2 | He | N2 | Ar | H2 | He | N2 | Ar | H2 | He | N2 | Ar | |
NBR | 34.2 (35.3)a | 8.96 | 11.0 | 22.5 | 5.60 (6.50)a | 21.5 | 1.18 | 2.01 | 19.2 (22.8)a | 19.3 | 1.29 | 4.53 |
EPDM | 25.6 (26.2)21 | 7.79 | 17.0 | 38.6 | 19.7 (24.1)21 | 83.1 | 7.24 | 10.5 | 50.3 (63.1)21 | 64.8 | 12.3 | 40.4 |
LDPE | 5.38 | 1.55 | 7.25 | 15.7 | 4.17 | 91.4 | 2.53 | 4.78 | 2.24 | 14.2 | 1.83 | 7.49 |
HDPE | 3.68 | 1.08 | 3.67 | 7.43 | 4.76 | 78.3 | 2.69 | 5.30 | 1.75 | 8.5 | 0.99 | 3.94 |
