Sustainable chemical recycling of poly(L-lactic acid) using montmorillonite

Kohei Okamoto, Kazunobu Toshima, Shuichi Matsumura

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In order to establish the sustainable chemical recycling process of poly(L-lactic acid), a high molecular weight poly(L-lactic acid) was transformed into the corresponding lactate oligomers having a molecular weight of few hundreds by using environmentally benign solid acids, such as montmorillonite K10. The oligomer was repolymerized by the conventional chemical catalysts forming a high molecular weight poly(L-lactic acid). It was also confirmed that the repolymerized product showed the same Tm as that obtained by the polymerization of the authentic L-lactic acid. This chemical recycling process was applicable to poly[(L-lactic acid)/( ε -caprolactone)] copolymer.

Original languageEnglish
Title of host publicationPolymer Preprints, Japan
Pages5334-5335
Number of pages2
Volume54
Edition2
Publication statusPublished - 2005
Event54th SPSJ Symposium on Macromolecules - Yamagata, Japan
Duration: 2005 Sep 202005 Sep 22

Other

Other54th SPSJ Symposium on Macromolecules
CountryJapan
CityYamagata
Period05/9/2005/9/22

Fingerprint

Lactic acid
Clay minerals
Recycling
Molecular weight
Oligomers
Copolymers
Polymerization
Catalysts
Acids

Keywords

  • Chemical recycling
  • Montmorillonite
  • Oligomer
  • Poly(caprolactone)
  • Poly(L-lactic acid)
  • Solid acid

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Okamoto, K., Toshima, K., & Matsumura, S. (2005). Sustainable chemical recycling of poly(L-lactic acid) using montmorillonite. In Polymer Preprints, Japan (2 ed., Vol. 54, pp. 5334-5335)

Sustainable chemical recycling of poly(L-lactic acid) using montmorillonite. / Okamoto, Kohei; Toshima, Kazunobu; Matsumura, Shuichi.

Polymer Preprints, Japan. Vol. 54 2. ed. 2005. p. 5334-5335.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Okamoto, K, Toshima, K & Matsumura, S 2005, Sustainable chemical recycling of poly(L-lactic acid) using montmorillonite. in Polymer Preprints, Japan. 2 edn, vol. 54, pp. 5334-5335, 54th SPSJ Symposium on Macromolecules, Yamagata, Japan, 05/9/20.
Okamoto K, Toshima K, Matsumura S. Sustainable chemical recycling of poly(L-lactic acid) using montmorillonite. In Polymer Preprints, Japan. 2 ed. Vol. 54. 2005. p. 5334-5335
Okamoto, Kohei ; Toshima, Kazunobu ; Matsumura, Shuichi. / Sustainable chemical recycling of poly(L-lactic acid) using montmorillonite. Polymer Preprints, Japan. Vol. 54 2. ed. 2005. pp. 5334-5335
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