双(对-羧苯基)苯基氧化膦与乙二醇的自催化聚酯化反?…EI

在不同的恒定反应温度和不同的初始摩尔比下，进行了双苯基氧化膦（ＢＣＰＰＯ）与乙二醇的自催化聚酯化反应。这两个速率方程与实验结果相一致，并计算得到了该反应的速率常数和活化能。

KINETICS OF POLYESTERIFICATION OF BIS(4-CARBOXYPHENYL) PHENYL PHOSPHINE OXIDE WITH ETHYLENE GLYCOL

The self catalyzed polyesterification of bis(4 carboxyphenyl) phenyl phosphine oxide(BCPPO) with ethylene glycol was carried out under different constant reaction temperatures and at various ratios of ethylene glycol to BCPPO. In view of the characteristic that the reaction process consists of non homogeneous and homogeneous two reaction stages, the calculation equation of the solubility of BCPPO in the reaction mixture and that of the clear point of the reaction were proposed, respectively, and then the kinetic model proposed by Chen and Wu for self catalyzed polyesterification was modified into two rate equations which were used for the non homogeneous and homogeneous reaction stages respectively. The two rate equations fitted the experimental data. The reaction rate constants and activation energy were calculated.