In addition to DSC studies, TGA analysis was performed to determine the temperature profile of polymer degradation, thermal stability and to complement the structural studies. Generally speaking, the thermal stability of uncross-linked PGS is quite good (T-5% = 297.1°C), which allows for its processing using thermal methods. Analysis of the temperature degradation profile of PGS, presented in Figure , reveals several stages of mass loss. The first stage occurs in the temperature range of 25-160 °C, with a mass loss of 0.8 %, and is associated with the evaporation of water bound in the material. Further analysis, supported by the derivative of mass over temperature (DTG) curve in the range of 160-321 °C, shows a more rapid mass loss of about 5%, with a maximum rate at Td1 = 256.1 °C (as indicated by the DTG curve). This temperature approximately corresponds to the degradation temperature of sebacic acid, 43 suggesting the degradation and evaporation of unreacted reagents used in the synthesis of PGS. However, NMR studies described in this publication indicate that the reaction was complete. Therefore, the second theory, outlined in our previous work, is more plausible, suggesting that the cross-linking of the material has occurred, leading to the formation of low-molecular-weight products (mainly water) that rapidly evaporate from the material. The final degradation stage occurs in the temperature range of 321 -600 °C (92.8 % weight loss). At the upper temperature, the material residue is only 1.4 %, indicating nearly complete degradation of the polymer. Analysis of the DTG curve in this range reveals two distinct maxima, occurring sequentially at temperatures Td2 = 411.6 °C and Td3 = 428.8 °C. This phenomenon is attributed to the presence of two parallel processes: rapid cross-linking (facilitated at high temperatures) and polymer degradation. Of course, degradation becomes the dominant process beyond certain temperatures.