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

Kohei Okamoto; Kazunobu Toshima; Shuichi Matsumura

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

Kohei Okamoto, Kazunobu Toshima, Shuichi Matsumura

Department of Applied Chemistry

Research output: Contribution to conference › Paper › peer-review

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 T_m 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 language	English
Pages	5334-5335
Number of pages	2
Publication status	Published - 2005 Dec 1
Event	54th SPSJ Symposium on Macromolecules - Yamagata, Japan Duration: 2005 Sept 20 → 2005 Sept 22

Other

Other	54th SPSJ Symposium on Macromolecules
Country/Territory	Japan
City	Yamagata
Period	05/9/20 → 05/9/22

Keywords

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

ASJC Scopus subject areas

Engineering(all)

Cite this

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title = "Sustainable chemical recycling of poly(L-lactic acid) using montmorillonite",

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.",

keywords = "Chemical recycling, Montmorillonite, Oligomer, Poly(caprolactone), Poly(L-lactic acid), Solid acid",

author = "Kohei Okamoto and Kazunobu Toshima and Shuichi Matsumura",

year = "2005",

month = dec,

day = "1",

language = "English",

pages = "5334--5335",

note = "54th SPSJ Symposium on Macromolecules ; Conference date: 20-09-2005 Through 22-09-2005",

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TY - CONF

T1 - Sustainable chemical recycling of poly(L-lactic acid) using montmorillonite

AU - Okamoto, Kohei

AU - Toshima, Kazunobu

AU - Matsumura, Shuichi

PY - 2005/12/1

Y1 - 2005/12/1

N2 - 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.

AB - 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.

KW - Chemical recycling

KW - Montmorillonite

KW - Oligomer

KW - Poly(caprolactone)

KW - Poly(L-lactic acid)

KW - Solid acid

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M3 - Paper

AN - SCOPUS:33645648833

SP - 5334

EP - 5335

T2 - 54th SPSJ Symposium on Macromolecules

Y2 - 20 September 2005 through 22 September 2005

ER -

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

Abstract

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Keywords

ASJC Scopus subject areas

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