The research on reaction kinetic model of polycarbonate by melt transesterification of bispheno-l A with diphenyl carbonate was summarized in this text. Two successful models

the functional group model and the molecular species model were explained in detail. A new tetrahedral intermediate model was also introduced. The calculating results of kinetic equations that educed from different models were discussed and compared with the experimental data. The reactive order

activation energies

rate constants and equilibrium constants can be gained via the functional group model. The most prominent advantage of the molecular species model was the concentration of materiel can be tracked at any moment

so the distribution of molecular weight and average molecular weight can be figured out sequentially. The applicability of the tetrahedral intermediate model was justified by fitting it to the available experimental data. Several amendatory aspects about further research on kinetics were also mentioned.