The Xc of PBS-DLS 70-30 decreased from 41% to 40%, and also negligible changes were noticed after introducing PEG (Xc decreased from 43% to 42%). Meanwhile, the crystallinity of the sample containing 60 wt.% hard segment remained unchanged after degradation (ca. 36%), but a notable change was observed for the material containing PEG, showing a decrease of Xc from 36% to 26%. These variations in Xc are noteworthy, particularly when considering the relatively modest 2% difference in mass weight loss for both materials after 20 days of enzymatic degradation (see Figure ). The observed changes in crystallinity postdegradation are indicative of the removal of amorphous phase from PBS hard segments. The observed phenomenon aligns with the behavior of semicrystalline polyesters, where degradation occurs through the hydrolysis of ester bonds, leading to the breakdown of long macromolecular chains . Moreover, the removal of amorphous phase from hydrophilic PEG6000 (see cooling thermograms in Figure ) which shows crystallization can also contribute to decrease of Xc after degradation.