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 conferencePaperpeer-review

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
Pages5524
Number of pages1
Publication statusPublished - 2006
Event55th Society of Polymer Science Japan Symposium on Macromolecules - Toyama, Japan
Duration: 2006 Sept 202006 Sept 22

Other

Other55th Society of Polymer Science Japan Symposium on Macromolecules
Country/TerritoryJapan
CityToyama
Period06/9/2006/9/22

Keywords

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

ASJC Scopus subject areas

  • General Engineering

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