Repolymerizability of lactic acid oligomers directed towards chemical recycling of poly (lactic acid)

Yota Tsuneizumi, Futoshi Yamato, Kazunobu Toshima, Shuichi Matsumura

Research output: Contribution to conference › Paper

Abstract

In order to establish the sustainable chemical recycling process of poly(L-lactic acid)(PLLA) using montmorillonite K5, repolymerizability of lactic acid oligomer (OLLA) was studied with respect to the molecular weight of the regenerated PLLA. OLLA with different Mn was prepared. Then the oligomer was repolymerized by the conventional chemical catalysts to synthesize PLLA. It was confirmed that the Mw of the regenerated PLLA decreased when the Mn of the OLLA increased to greater than 400. On the other hand, the recovery of the PLLA increased with the increasing Mn of the OLLA. These results suggested that the solubility of Sn(Oct)2 towards OLLA affected the Mw of the regenerated PLLA.

Original languageEnglish
Number of pages1
Publication statusPublished - 2006 Dec 1
Event55th Society of Polymer Science Japan Symposium on Macromolecules - Toyama, Japan
Duration: 2006 Sep 20 → 2006 Sep 22

Other

Other55th Society of Polymer Science Japan Symposium on Macromolecules
CountryJapan
CityToyama
Period06/9/20 → 06/9/22

Keywords

  • Chemical recycling
  • Degradation
  • Oligomer
  • poly (L-lactic acid)
  • Repolymerizability
  • Solid acid

ASJC Scopus subject areas

  • Engineering(all)

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    Tsuneizumi, Y., Yamato, F., Toshima, K., & Matsumura, S. (2006). Repolymerizability of lactic acid oligomers directed towards chemical recycling of poly (lactic acid). Paper presented at 55th Society of Polymer Science Japan Symposium on Macromolecules, Toyama, Japan.