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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. shu

Synthesis and Thermal Stability of Poly(DL-lactide)

a.
a. Institute of Polymer Science, Zhongshan University, Guangzhou 510275;
b.
b. Wuhan University of Technology, Wuhan

Received Date: 25 October 1999
Available Online: 2 March 2000
Fund Project: 广东省自然科学基金资助项目(970160,960020) (970160,960020)

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.
- poly(DL-lactide),
- synthesis,
- thermal degradation
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