2.5 Synthesis and characterization of polyesters
Synthesis of 10 selected polyesters from dataset B with diverseT gs is carried out via a successive esterification and condensation two-stage polymerization process in a 250 mL three-neck flask equipped with mechanical overhead stirrer, vacuum-tight stirrer bearings and distillation columns. Detailed synthesis procedure for each polyester is shown in supporting information.
The T g values of final products are measured by differential scanning calorimetry (DSC) analysis. DSC was carried out on a Q2000 (TA Instruments, USA) with a temperature range of -70 to 200 ℃. The data are collected from the second heating thermogram and the heating curves are presented in supporting information.