Fig. 4.
(a) Swelling ratio (QM) dependence on polymer density. The solid line represents linear dependence in the range studied (R2 = 0.98). (b) Influence of QM on BSA diffusivity, where QM was altered by manipulating the polymer density. The solid line represents a fit of the data to the free volume theory modified for diffusion in hydrogels (R2 = 0.99).