Here, 𝜌 𝑠 is the density of the used swelling solvent and 𝜌 𝑝 is the density of the polymers (1.13 g mL -1 as average for both PEG and PCL). The procedure of swelling the samples to equilibrium followed by complete drying was repeated up to three times for all networks. As a result, equilibrium degrees of swelling (Qv1, Qv2 etc.) were measured, where the index counts the number of the swelling experiment.