Enzymatic degradation of diol-diacid type polyesters into cyclic oligomers and its application for the selective chemical recycling of PLLA-based polymer blends

Asato Kondo, Satoko Sugihara, Kohei Okamoto, Yota Tsuneizumi, Kazunobu Toshima, Shuichi Matsumura

研究成果: Conference contribution

2 引用 (Scopus)

抄録

The lipase-catalyzed degradation of poly(butylene adipate) (PBA) and poly(butylene succinate) (PBS) into cyclic oligomers and their polymerizability were analyzed. The enzymatic polymerization of a cyclic oligomer was dependent on its ring-size. The highest molecular weight PBA with an Mw of 173000 was produced by the polymerization of the cyclic BA monomer The molecular weight decreased to around M w 60000 by polymerization of the cyclic BA dimer and trimer. Similar results were obtained for PBS. For the efficient chemical recycling of PBA and PBS, the cyclic BA monomer and the cyclic BS dimer had the best oligomer sizes, respectively. As an application of the enzymatic degradation for the chemical recycling of PBS, the selective recycling of the PBS/poly(L-lactic acid)(PLLA) polymer blend was carried out using a lipase and a clay catalyst, montmorillonite K5.

元の言語English
ホスト出版物のタイトルACS Symposium Series
出版者American Chemical Society
ページ246-262
ページ数17
999
ISBN(印刷物)9780841269705
出版物ステータスPublished - 2008

出版物シリーズ

名前ACS Symposium Series
999
ISSN(印刷物)00976156
ISSN(電子版)19475918

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Polyesters
Polymer blends
Lactic acid
Oligomers
Recycling
Polymerization
Lipases
Degradation
Dimers
Monomers
Molecular weight
Lipase
Clay minerals
Clay
Bentonite
Catalysts
bionole
poly(lactic acid)

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)

これを引用

Kondo, A., Sugihara, S., Okamoto, K., Tsuneizumi, Y., Toshima, K., & Matsumura, S. (2008). Enzymatic degradation of diol-diacid type polyesters into cyclic oligomers and its application for the selective chemical recycling of PLLA-based polymer blends. : ACS Symposium Series (巻 999, pp. 246-262). (ACS Symposium Series; 巻数 999). American Chemical Society.

Enzymatic degradation of diol-diacid type polyesters into cyclic oligomers and its application for the selective chemical recycling of PLLA-based polymer blends. / Kondo, Asato; Sugihara, Satoko; Okamoto, Kohei; Tsuneizumi, Yota; Toshima, Kazunobu; Matsumura, Shuichi.

ACS Symposium Series. 巻 999 American Chemical Society, 2008. p. 246-262 (ACS Symposium Series; 巻 999).

研究成果: Conference contribution

Kondo, A, Sugihara, S, Okamoto, K, Tsuneizumi, Y, Toshima, K & Matsumura, S 2008, Enzymatic degradation of diol-diacid type polyesters into cyclic oligomers and its application for the selective chemical recycling of PLLA-based polymer blends. : ACS Symposium Series. 巻. 999, ACS Symposium Series, 巻. 999, American Chemical Society, pp. 246-262.
Kondo A, Sugihara S, Okamoto K, Tsuneizumi Y, Toshima K, Matsumura S. Enzymatic degradation of diol-diacid type polyesters into cyclic oligomers and its application for the selective chemical recycling of PLLA-based polymer blends. : ACS Symposium Series. 巻 999. American Chemical Society. 2008. p. 246-262. (ACS Symposium Series).
Kondo, Asato ; Sugihara, Satoko ; Okamoto, Kohei ; Tsuneizumi, Yota ; Toshima, Kazunobu ; Matsumura, Shuichi. / Enzymatic degradation of diol-diacid type polyesters into cyclic oligomers and its application for the selective chemical recycling of PLLA-based polymer blends. ACS Symposium Series. 巻 999 American Chemical Society, 2008. pp. 246-262 (ACS Symposium Series).
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