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Synthesis of hydroxyl terminated poly(d, l-lactic acid) and hydroxyl terminated poly(d, l-lactic acid-co-ε-caprolactione) prepolymer
Author(s): 
Pages: 57-61
Year: Issue:  2
Journal: JOURNAL OF BEIJING UNIVERSITY OF CHEMICAL TECHNOLOGY(NATURAL SCIENCE EDITION)

Keyword:  聚乳酸端羟基预聚物ε-己内酯扩链;
Abstract: 文中研究了端羟基聚d,l-乳酸及d,l-乳酸-ε-己内酯共聚物预聚体的合成方法以及反应温度、单体比、催化剂用量等对预聚体结构的影响.结果表明预聚体合成的最佳反应条件为:n(LA)/n(CL)=8/2,θ=195℃,催化剂质量分数0.3%,还原剂质量分数0.1%,总反应时间31 h.在该反应条件下可合成出结构明确、酸值较为理想、可满足进一步扩链要求的端羟基预聚体.并用羟值分析和GPc等对产物进行了表征.
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