异辛酸亚锡催化D,L-丙交酯聚合动力学

Kinetics on Polymerization of D, L - Lactide Catalyzed by Stannous Isooctoate

以异辛酸亚锡为催化剂,D,L-丙交酯开环聚合合成聚乳酸,研究了D,L-丙交酯聚合动力学,考察了催化剂和反应温度对聚合反应的影响,测定了聚合反应的表观活化能及聚合速率方程,并推测了反应机理。

The PLA was synthesized from D, L - lactide by ring - opening ploymerization with stannous isooctoate as catalyst. The kinetics on the polymerization of D, L - lactide was studyed. The effects of amount of the catalyst and the reaction temperature on the polymerization were investigated. The apparent activation energy and the equation of polymerization rate were determined. The mechanism of the polymerization was also inferred from experimental results .