Although the reactions appearing in this kind of polyesterification are well known), (detailed kinetics studies of the esterification reaction and side reactions of different carboxylic acids and diols mixtures are limited (13).
To the best of our knowledge, such a complete process model for the nonlinear polyesterification process is not yet addressed in the scientific literature.
After the Michael addition reaction was complete as demonstrated by NMR, polyesterification was performed by increasing the reaction temperature to 120[degrees]C, adding 0.
Polyesterification of ASPE was accomplished by moderate heating at reduced pressures in the presence of a titanate catalyst.
Aliphatic polyesters synthesized from polyesterification reaction, ring-open polymerization of cyclic monomer, and polycondensation have been investigated widely because of their superior mechanical properties, good processability and controllable degradation (1-5).
In the theory of polyesterification reaction developed by Flory (6), based on the reaction of a diacid and glycol, the reaction was known to be acid catalyzed.
Flory (3, 4), considering data for relatively high conversion to avoid large changes in polarity during the reaction, found that ethylene glycol-succinic acid polyesterification
is predominately a trimolecular process with a partial order of two with respect to carboxylic acid and one with respect to alcohol.
The hydroxyl number of the glycolyzed product before removing the free glycol was used to determine the amount of the dibasic acid required for the polyesterification