Table . Spherulites diameter and roughness of the sample (Sa) after cooling from melt. DSC analysis has been performed to investigate the relationship between crystalline and thermal effects for furan-based copolyesters consisting of α,ω-ALD differing in chain length. Detailed results of the DSC analysis can be found in the Supporting Information (Figures ). As can be seen from Figures and Table the thermal transition temperatures are governed by the chain length of α,ω-ALD which were used as a building block to create hard segments within furan-based copolyesters. Performed studies revealed that copolyesters exhibit specific phase-separated microstructure consisting of a crystalline phase, created by the ester hard segments and an amorphous phase formed by a mixture of the soft segments containing long aliphatic dilinoleic diol unit and hard segments which were not involved in crystallites formation. As evident from Figures and Table glass transition (Tg), melting (Tm), and crystallization (Tc) temperature as well as crystallization degree (Xc) were observed to decrease steadily with an increasing number of carbon atoms within the α,ω-ALD.