In our previous investigations of the impact of DGDC stereoisomery onto the microstructure of PHUs, only moderated variation of the Tg were observed between the PHUs obtained from the enantiopure meso-DGDC, (R,S), vs the racemic mixture of (R,R) and (S,S) DGDC. In this case, the variation of the hydroxyl ratio were of about 10%. For EDC vs TDC, we observe a two-fold increase of the magnitude of the variation (~20%), which might explain the larger variation of the thermal properties of the PHUs.