Experiment Research on Influence Factors of Ring-Opening Polymerization in Making PDLLA
The paper research on the factors of the lactide polymerization, which primarily were ontology purity, dosage of initiator, polymerization temperature, time and vacuum degree, etc. According to the molecular weight measuring in different conditions of synthesis PDLLA, the results shows that, through the control of polymerization conditions higher molecular weight of PDLLA can obtain, main parameters as the quality ratio of initiator and monomers is about 0.03%, the polymerization temperature is 140°C, time duration is 48h and vacuum is 0.05 mmHg.
Yanguo Shi and Jinlong Zuo
S. Liu and L. N. Sun, "Experiment Research on Influence Factors of Ring-Opening Polymerization in Making PDLLA", Advanced Materials Research, Vols. 183-185, pp. 1879-1882, 2011