Figure 4
From: Dynamic Triple-Mode Sorption and Outgassing in Materials

Parameter sensitivity of k d at different water activities in Zircar RS-1200 at 50 °C. Water uptake was computed by simulating our model at different water activities (i.e., stepped watter activity from zero level to 0.05, 0.25, 0.50 and 0.75) by perturbing the Henry’s mode constant k d by 5% while keeping other parameters constant. The middle line in each water activity region corresponds to the uptake computed with SCE optimized k d.