Enzymatic synthesis and properties of high molecular weight polythioester

Makoto Kato; Kazunobu Toshima; Shuichi Matsumura

Enzymatic synthesis and properties of high molecular weight polythioester

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. Synthesis of high molecular weight polythioester using an enzyme was studied First, hexane- 1,6-dithiol and diacid diesters were reacted in ethylcyclohexane using lipase CA to prcduce cyclic oligomere with an M_wof a few hundreds. Systhesis of polythoester was studied using these cyclic oligomers. A high molecular weight polythioester having an M_w of about 120,000 was prepared by the ring opening polymerization of cyclic oligomers using lipase CA Thermal and mechanical properties of polythioesters were compared with the omresponding polyoxyester. Degradation of the obtained pdythioester into the cyclic oligomer was an objective for establishing chemical recycling.

Original language	English
Number of pages	1
Publication status	Published - 2006 Dec 1
Event	55th Society of Polymer Science Japan Symposium on Macromolecules - Toyama, Japan Duration: 2006 Sept 20 → 2006 Sept 22

Other

Other	55th Society of Polymer Science Japan Symposium on Macromolecules
Country/Territory	Japan
City	Toyama
Period	06/9/20 → 06/9/22

Keywords

Degradation
Enzymatic polymerization
Mechanical properties
Polythioester
Ring-opening polymerization
Thermal properties

ASJC Scopus subject areas

Engineering(all)

Cite this

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title = "Enzymatic synthesis and properties of high molecular weight polythioester",

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. Synthesis of high molecular weight polythioester using an enzyme was studied First, hexane- 1,6-dithiol and diacid diesters were reacted in ethylcyclohexane using lipase CA to prcduce cyclic oligomere with an Mwof a few hundreds. Systhesis of polythoester was studied using these cyclic oligomers. A high molecular weight polythioester having an Mw of about 120,000 was prepared by the ring opening polymerization of cyclic oligomers using lipase CA Thermal and mechanical properties of polythioesters were compared with the omresponding polyoxyester. Degradation of the obtained pdythioester into the cyclic oligomer was an objective for establishing chemical recycling.",

keywords = "Degradation, Enzymatic polymerization, Mechanical properties, Polythioester, Ring-opening polymerization, Thermal properties",

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

year = "2006",

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day = "1",

language = "English",

note = "55th Society of Polymer Science Japan Symposium on Macromolecules ; Conference date: 20-09-2006 Through 22-09-2006",

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TY - CONF

T1 - Enzymatic synthesis and properties of high molecular weight polythioester

AU - Kato, Makoto

AU - Toshima, Kazunobu

AU - Matsumura, Shuichi

PY - 2006/12/1

Y1 - 2006/12/1

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. Synthesis of high molecular weight polythioester using an enzyme was studied First, hexane- 1,6-dithiol and diacid diesters were reacted in ethylcyclohexane using lipase CA to prcduce cyclic oligomere with an Mwof a few hundreds. Systhesis of polythoester was studied using these cyclic oligomers. A high molecular weight polythioester having an Mw of about 120,000 was prepared by the ring opening polymerization of cyclic oligomers using lipase CA Thermal and mechanical properties of polythioesters were compared with the omresponding polyoxyester. Degradation of the obtained pdythioester into the cyclic oligomer was an objective for establishing chemical recycling.

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. Synthesis of high molecular weight polythioester using an enzyme was studied First, hexane- 1,6-dithiol and diacid diesters were reacted in ethylcyclohexane using lipase CA to prcduce cyclic oligomere with an Mwof a few hundreds. Systhesis of polythoester was studied using these cyclic oligomers. A high molecular weight polythioester having an Mw of about 120,000 was prepared by the ring opening polymerization of cyclic oligomers using lipase CA Thermal and mechanical properties of polythioesters were compared with the omresponding polyoxyester. Degradation of the obtained pdythioester into the cyclic oligomer was an objective for establishing chemical recycling.

KW - Degradation

KW - Enzymatic polymerization

KW - Mechanical properties

KW - Polythioester

KW - Ring-opening polymerization

KW - Thermal properties

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M3 - Paper

AN - SCOPUS:33846144779

T2 - 55th Society of Polymer Science Japan Symposium on Macromolecules

Y2 - 20 September 2006 through 22 September 2006

ER -

Enzymatic synthesis and properties of high molecular weight polythioester

Abstract

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Keywords

ASJC Scopus subject areas

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