引用本文:
全大萍, 袁润章, 卢泽俭, 廖凯荣, 王海华. 高分子量聚DL-丙交酯的合成及热降解[J]. 应用化学,
2000, 17(3): 268-271.
Citation: QUAN Da-Ping, YUAN Run-Zhang, LU Ze-Jian, LIAO Kai-Rong, WANG Hai-Hua. Synthesis and Thermal Stability of Poly(DL-lactide)[J]. Chinese Journal of Applied Chemistry, 2000, 17(3): 268-271.
Citation: QUAN Da-Ping, YUAN Run-Zhang, LU Ze-Jian, LIAO Kai-Rong, WANG Hai-Hua. Synthesis and Thermal Stability of Poly(DL-lactide)[J]. Chinese Journal of Applied Chemistry, 2000, 17(3): 268-271.
高分子量聚DL-丙交酯的合成及热降解
English
Synthesis and Thermal Stability of Poly(DL-lactide)
Abstract:
The synthesis and thermal degradability of poly(DL-lactide) were investigated. Key factors affecting the polymer molecular weight were found to be monomer purity, initator concentration and the vacuum and drying levels during sealing of the polymerization reaction ampoule. DSC and TGA were used to study the glass transition temperature and the thermal decomposition. It was found that poly(DL-lactide) is a thermal unstable polymer. Polymer precipitation can reduce the residual of monomer, initiator and oligomer and significantly lower the rate and extent of thermal degradation.
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Key words:
- poly(DL-lactide)
- / synthesis
- / thermal degradation
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