聚苯撑醚砜缩聚过程的研究

本文报导了聚苯撑醚砜碱法缩聚动力学的研究。首先合成了有关的单体及二聚体的模拟化合物,然后进行了反应速率常数的测定。其结果是:(1)两组带有取代基的苯衍生物相互作用时,其反应速率常数等于不带取代基的苯衍生物和带取代基的反应速率常数以及取代基组成相反的另一组速率常数的乘积。(2)对于聚苯撑醚砜缩聚反应必须采用多个反应速率常数来计算动力学过程。

A Study of the Poly condensation Process of Poly (Phenylene Ether Sulfone)

The present paper reports the studies of the alkaline polycondensation kinetics of poly (phenylene ether sulfone). The related monomers and their model compounds for polymers were synthesized, then their reaction velocity constants were determined. The chief results obtained are. (1) when two series (m,n) of substituted benzene derivatives are reacted with each other, the velocity constant k_mn is equal to the product of velocity constant k_m0 and k_n0.(2) For polycondensation reaction, when the reactivities of the monomers and the polymers are different, as in the case of polycondensation of poly (phenylene ether sulfone),it is not quite accurate to use a single velocity constant to derive the kinetic equation, instead, two or more reaction velocity constants must be used so as to conform to the experimental facts.