Chemical recycling of lactic acid based polymer blends

Satoko Sugihara, Naoki Kobayashi, Kohei Okamoto, Kazunobu Toshima, Shuichi Matsumura

Research output: Contribution to conferencePaperpeer-review


Chemical recycling of polymer blends consisting of poly(lactic acid)(PLA) and poly(butylene succinate) (PBS) was studied. That is, first PBS was selectively degraded into cyclic oligomers using lipase in toluene solution. The cyclic oligomers and PLA were separated by the reprecipitation using chloroform-methanol. PLA was degraded into oligoLA using a solid acid, MK5. The oligoLA was repolymerized using stannous chloride forming a high molecular weight PLA. Cyclic butylene succinate oligomer was also polymerized by lipase CA to produce PBS as a chemical recycling.

Original languageEnglish
Number of pages1
Publication statusPublished - 2006
Event55th SPSJ Annual Meeting - Nagoya, Japan
Duration: 2006 May 242006 May 26


Other55th SPSJ Annual Meeting


  • Chemical recycling
  • Lipase
  • Poly(lactic acid)
  • Polybutylene succinate
  • Solid acid

ASJC Scopus subject areas

  • General Engineering


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