Abstract

The kinetics of terpolymerization of CO₂ with propylene oxide and hexene oxide in the presence of a binary catalytic system salenCoDNP/PPNCl was studied for the first time. The reaction rate was determined by measuring the CO₂ uptake with time during terpolymerization. The dependences of the reaction rate and terpolymer composition on the mole fractions of epoxides in the feed were presented. The relationship between the rate constants of the insertion of various epoxides in the copolymers was determined. The glass transition temperatures of aliphatic polycarbonates depend on their composition and varied from 26.3 to –9.8°С.

中文翻译：

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二氧化碳与环氧丙烷和环氧乙烷三元聚合的动力学

摘要

首次研究了在二元催化体系salenCoDNP / PPNCl存在下，CO ₂与环氧丙烷和环氧乙烷的三元聚合反应动力学。通过测量三元聚合过程中随时间的CO ₂吸收来确定反应速率。提出了反应速率和三元共聚物组成对进料中环氧化物摩尔分数的依赖性。确定了共聚物中各种环氧化物的插入速率常数之间的关系。脂肪族聚碳酸酯的玻璃化转变温度取决于其组成，其变化范围为26.3至–9.8°С。