Chemical recycling of lactic acid based polymer using a solid acid

Yota Tsuneizumi, 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), degradation of a polymer blend of poly(L-lactic acid) (PLLA) and polyethylene was studied. PLLA was selectively degraded into the corresponding lactate oligomers having a molecular weight of few hundreds in toluene by using environmentally benign solid acid, montmorillonite K5. The oligomer was repolymerized by the conventional chemical catalysts forming a high molecular weight PLLA. It was also confirmed that the repolymerized product showed the same Tm as that obtained by the polymerization of the authentic L-lactic acid.

Original languageEnglish
Title of host publicationPolymer Preprints, Japan
Pages2278
Number of pages1
Volume55
Edition1
Publication statusPublished - 2006
Event55th SPSJ Annual Meeting - Nagoya, Japan
Duration: 2006 May 242006 May 26

Other

Other55th SPSJ Annual Meeting
CountryJapan
CityNagoya
Period06/5/2406/5/26

Fingerprint

Lactic acid
Recycling
Acids
Polymers
Oligomers
Molecular weight
Polymer blends
Clay minerals
Toluene
Polyethylenes
Polymerization
Degradation
Catalysts

Keywords

  • Chemical recycling
  • Degradation
  • Oligomer
  • Poly(L-lactic acid) montmorillonite
  • Solid acid

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Tsuneizumi, Y., Okamoto, K., Toshima, K., & Matsumura, S. (2006). Chemical recycling of lactic acid based polymer using a solid acid. In Polymer Preprints, Japan (1 ed., Vol. 55, pp. 2278)

Chemical recycling of lactic acid based polymer using a solid acid. / Tsuneizumi, Yota; Okamoto, Kohei; Toshima, Kazunobu; Matsumura, Shuichi.

Polymer Preprints, Japan. Vol. 55 1. ed. 2006. p. 2278.

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

Tsuneizumi, Y, Okamoto, K, Toshima, K & Matsumura, S 2006, Chemical recycling of lactic acid based polymer using a solid acid. in Polymer Preprints, Japan. 1 edn, vol. 55, pp. 2278, 55th SPSJ Annual Meeting, Nagoya, Japan, 06/5/24.
Tsuneizumi Y, Okamoto K, Toshima K, Matsumura S. Chemical recycling of lactic acid based polymer using a solid acid. In Polymer Preprints, Japan. 1 ed. Vol. 55. 2006. p. 2278
Tsuneizumi, Yota ; Okamoto, Kohei ; Toshima, Kazunobu ; Matsumura, Shuichi. / Chemical recycling of lactic acid based polymer using a solid acid. Polymer Preprints, Japan. Vol. 55 1. ed. 2006. pp. 2278
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