DSC was used to determine the phase transitions of the obtained macromonomers. According to the results, the changes in catalyst concentration did not affect the main phase transition of the obtained macromonomers. As presented in Fig. , the glass transition temperatures (Tg) and changes in heat capacity (ΔCp) for all materials were very similar: approximately -51 °C and 0.37 J/g•°C (SI Table ), respectively. Fig. DSC thermograms of macromonomers synthesized with different concentrations of Mg-Ti butoxide catalyst