Chemical recycling of lactic acid based polymer using a solid acid

Yota Tsuneizumi; Kohei Okamoto; Kazunobu Toshima; Shuichi Matsumura

Chemical recycling of lactic acid based polymer using a solid acid

Yota Tsuneizumi, 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), 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 T_m as that obtained by the polymerization of the authentic L-lactic acid.

Original language	English
Number of pages	1
Publication status	Published - 2006 Oct 19
Event	55th SPSJ Annual Meeting - Nagoya, Japan Duration: 2006 May 24 → 2006 May 26

Other

Other	55th SPSJ Annual Meeting
Country/Territory	Japan
City	Nagoya
Period	06/5/24 → 06/5/26

Keywords

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

ASJC Scopus subject areas

Engineering(all)

Cite this

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title = "Chemical recycling of lactic acid based polymer using a solid acid",

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.",

keywords = "Chemical recycling, Degradation, Oligomer, Poly(L-lactic acid) montmorillonite, Solid acid",

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

year = "2006",

month = oct,

day = "19",

language = "English",

note = "55th SPSJ Annual Meeting ; Conference date: 24-05-2006 Through 26-05-2006",

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TY - CONF

T1 - Chemical recycling of lactic acid based polymer using a solid acid

AU - Tsuneizumi, Yota

AU - Okamoto, Kohei

AU - Toshima, Kazunobu

AU - Matsumura, Shuichi

PY - 2006/10/19

Y1 - 2006/10/19

N2 - 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.

AB - 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.

KW - Chemical recycling

KW - Degradation

KW - Oligomer

KW - Poly(L-lactic acid) montmorillonite

KW - Solid acid

UR - http://www.scopus.com/inward/record.url?scp=33749817966&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=33749817966&partnerID=8YFLogxK

M3 - Paper

AN - SCOPUS:33749817966

T2 - 55th SPSJ Annual Meeting

Y2 - 24 May 2006 through 26 May 2006

ER -

Chemical recycling of lactic acid based polymer using a solid acid

Abstract

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Keywords

ASJC Scopus subject areas

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