do not exhibit such patterns (Figure ). The average size of the spherulites for the copolymers containing higher hard segment content (70 wt%) was 142 µm, while for the copolymers with 60 wt% of hard segments, the average size has been reduced to 58µm. The formation of larger spherulites is primarily influenced by the primary nucleation process, which can be affected by several factors, such as temperature, cooling rate, molecular mobility, and presence of impurities . The hard segment content can indirectly affect spherulite size by influencing the overall crystallinity of the copolymer. Although the morphology and size of the spherulites are not directly dependent on the degree of crystallinity of the copolymers, while the degree of crystallinity can indirectly affect the primary nucleation process by influencing the availability of crystallization sites and the density of crystal nuclei. Higher degree of crystallinity (Xc=42%) were observed for the copolymers with higher crystalline PBS hard segments content (70% wt%) while for the copolymers containing 60 wt% of hard segments, calculated degree of crystallinity (based on DSC measurements) was much lower (Xc=36%, see SI3 in supplementary information). After incorporation of 5% of PEG into the copolymers (PBS-DLS-PEG), the banded