熔融缩聚法制备聚乳酸及其聚己内酯多元醇扩链研究

1.东华大学材料科学与工程学院,上海,200051

2.中国石化仪征化纤股份有限公司研究院,江苏,仪征,211900

3.东华大学材料科学与工程学院,上海,200051

4.中国石化仪征化纤股份有限公司研究院,江苏,仪征,211900

5.东华大学材料科学与工程学院,上海,200051

MELT POLYCONDENSATION PROPARATION OF POLY (LACTIC ACID) AND ITS POLY(ε-CAPROLACTONE) CHAIN-EXTENSION EXPLORATION

采用熔融缩聚法合成一定分子量的聚乳酸(PLA),并用聚己内酯多元醇(PCL)的聚氨酯预聚体进行扩链.研究了扩链反应条件对产物分子量的影响及产物的热性能.结果表明,扩链反应后PLA的分子量有大幅度提高,且扩链前后的PLA都具有良好的热稳定性.

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