Figure 3
From: Characterization technique of gases permeation properties in polymers: H2, He, N2 and Ar gas
Sequence for obtaining the diffusion parameter in EPDM cylindrical rubber. (a) Water level versus time after decompression and (b) time-varying N2 mass concentration transformed from the water level. As a result of the experimental investigation, the diffusion parameters D and C∞ are determined using a diffusion analysis program. The blue line is the total compensated emission curve restoring the missing content for lag time. R and T indicate the radius and thickness, respectively, of the cylindrical specimen.
