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An investigation of the synthesis and thermal stability of poly(dl-lactide)

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Summary

The synthesis and thermal degradability of poly (DL-lactide) were investigated. Key factors affecting the polymer molecular weight were found to be monomer recrystallization, initiator concentration and the vacuum level during drying/sealing of the polymerization reaction ampoule. It was found that poly (DL-lactide) is thermally unstable above its melting temperature. Monomer recrystallization, polymer precipitation and a low initiator content of the polymer significantly inhibited the rate and extent of thermal degradation.

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Authors and Affiliations

  1. Department of Chemical Engineering, Queen's University, K7L 3N6, Kingston, Ontario, Canada

    Xichen Zhang & Mattheus F. A. Goosen

  2. Department of Mechanical Engineering, Queen's University, K7L 3N6, Kingston, Ontario, Canada

    Urs P. Wyss

  3. Department of Surgery, Queen's University, K7L 3N6, Kingston, Ontario, Canada

    David Pichora

Authors
  1. Xichen Zhang
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  2. Urs P. Wyss
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  3. David Pichora
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  4. Mattheus F. A. Goosen
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Zhang, X., Wyss, U.P., Pichora, D. et al. An investigation of the synthesis and thermal stability of poly(dl-lactide). Polymer Bulletin 27, 623–629 (1992). https://doi.org/10.1007/BF00297431

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  • DOI: https://doi.org/10.1007/BF00297431

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