Synthesis of high molecular weight polythioester using an enzyme

Makoto Kato; Kazunobu Toshima; Shuichi Matsumura

Synthesis of high molecular weight polythioester using an enzyme

Makoto Kato, Kazunobu Toshima, Shuichi Matsumura

Department of Applied Chemistry

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

Abstract

Polythioesters have recently been attracted attention due to their interesting characteristics, such as poor solubility against organic solvents and higher heat stability compared to polyoxyesters. Polythioesters were synthesized by the direct polycondensation of 1,6-hexanedithiol and diacid diesters having a variety of methylene lengths using lipase CAas a catalyst. The obtained polythioesters showed a higher melting temperature compared to those of the corresponding polyoxyesters. The 1,6-hexanedithiol and diacid diesters were reacted in n-nonane using lipase CA to produce cyclic oligomers with an M_w of a few hundreds. Synthesis of polythioester was studied using these cyclic oligomers. A high-molecular weight polythioester having an M _w of about 120,000 was produced through the ring-opening polymerization using lipase CA.

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

Biodegradation
Cyclic oligomers
Enzymatic polymerization
Polythioester
Ring opening polymerization

ASJC Scopus subject areas

Engineering(all)

Cite this

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title = "Synthesis of high molecular weight polythioester using an enzyme",

abstract = "Polythioesters have recently been attracted attention due to their interesting characteristics, such as poor solubility against organic solvents and higher heat stability compared to polyoxyesters. Polythioesters were synthesized by the direct polycondensation of 1,6-hexanedithiol and diacid diesters having a variety of methylene lengths using lipase CAas a catalyst. The obtained polythioesters showed a higher melting temperature compared to those of the corresponding polyoxyesters. The 1,6-hexanedithiol and diacid diesters were reacted in n-nonane using lipase CA to produce cyclic oligomers with an Mw of a few hundreds. Synthesis of polythioester was studied using these cyclic oligomers. A high-molecular weight polythioester having an M w of about 120,000 was produced through the ring-opening polymerization using lipase CA.",

keywords = "Biodegradation, Cyclic oligomers, Enzymatic polymerization, Polythioester, Ring opening polymerization",

author = "Makoto Kato and Kazunobu Toshima and Shuichi Matsumura",

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TY - CONF

T1 - Synthesis of high molecular weight polythioester using an enzyme

AU - Kato, Makoto

AU - Toshima, Kazunobu

AU - Matsumura, Shuichi

PY - 2006/10/19

Y1 - 2006/10/19

N2 - Polythioesters have recently been attracted attention due to their interesting characteristics, such as poor solubility against organic solvents and higher heat stability compared to polyoxyesters. Polythioesters were synthesized by the direct polycondensation of 1,6-hexanedithiol and diacid diesters having a variety of methylene lengths using lipase CAas a catalyst. The obtained polythioesters showed a higher melting temperature compared to those of the corresponding polyoxyesters. The 1,6-hexanedithiol and diacid diesters were reacted in n-nonane using lipase CA to produce cyclic oligomers with an Mw of a few hundreds. Synthesis of polythioester was studied using these cyclic oligomers. A high-molecular weight polythioester having an M w of about 120,000 was produced through the ring-opening polymerization using lipase CA.

AB - Polythioesters have recently been attracted attention due to their interesting characteristics, such as poor solubility against organic solvents and higher heat stability compared to polyoxyesters. Polythioesters were synthesized by the direct polycondensation of 1,6-hexanedithiol and diacid diesters having a variety of methylene lengths using lipase CAas a catalyst. The obtained polythioesters showed a higher melting temperature compared to those of the corresponding polyoxyesters. The 1,6-hexanedithiol and diacid diesters were reacted in n-nonane using lipase CA to produce cyclic oligomers with an Mw of a few hundreds. Synthesis of polythioester was studied using these cyclic oligomers. A high-molecular weight polythioester having an M w of about 120,000 was produced through the ring-opening polymerization using lipase CA.

KW - Biodegradation

KW - Cyclic oligomers

KW - Enzymatic polymerization

KW - Polythioester

KW - Ring opening polymerization

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M3 - Paper

AN - SCOPUS:33749859177

T2 - 55th SPSJ Annual Meeting

Y2 - 24 May 2006 through 26 May 2006

ER -

Synthesis of high molecular weight polythioester using an enzyme

Abstract

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Keywords

ASJC Scopus subject areas

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