Synthesis of poly(alkoxyamine)s and regeneration of macrocyclic alkoxyxamine by depolymerization

Go Yamaguchi, Hideyuki Otsuka, Atsushi Takahara

研究成果: 会議への寄与タイプ論文

抄録

Recently, a great attention has been paid on polymers with dynamic covalent bonding nature because their structures and properties can be changed and tuned after polymerization. In this study, the authors report the synthesis of a polymer with alkoxyamine-based dynamic covalent bonds and its depolymerization behavior. The poly(alkoxyamine) was synthesized by two methods. One is ring-crossover polymerization of an macrocyclic alkoxyamine (1) and the other is polycondensation of alkoxyamine-based diol and dicarboxylic acid dichloride. The depolymerization of the polymer obtained by either way was conducted in 0.65wt % anisole solution at 398 K for 24 h. After heating, GPC profiles, TLC analysis, and FAB-MS measurement of the reaction mixture confirmed that the generated major product is 1. The monomer percentage of depolymerization of the polymer (2) obtained by ring-crossover polymerization is higher than that of the polymer (3) by polycondensation because 2 is structurally ordered polymer. These findings revealed that both 2 and 3 depolymerized to the monomers principally by the intramolecular radical exchange process under high-dilution conditions, the monomer percentage depends on the method of polymer synthesis.

元の言語英語
ページ数1
出版物ステータス出版済み - 12 1 2005
イベント54th SPSJ Annual Meeting 2005 - Yokohama, 日本
継続期間: 5 25 20055 27 2005

その他

その他54th SPSJ Annual Meeting 2005
日本
Yokohama
期間5/25/055/27/05

Fingerprint

Depolymerization
Polymers
Monomers
Polymerization
Polycondensation
Covalent bonds
Dilution
Ion exchange
Heating
Acids

All Science Journal Classification (ASJC) codes

  • Engineering(all)

これを引用

Yamaguchi, G., Otsuka, H., & Takahara, A. (2005). Synthesis of poly(alkoxyamine)s and regeneration of macrocyclic alkoxyxamine by depolymerization. 論文発表場所 54th SPSJ Annual Meeting 2005, Yokohama, 日本.

Synthesis of poly(alkoxyamine)s and regeneration of macrocyclic alkoxyxamine by depolymerization. / Yamaguchi, Go; Otsuka, Hideyuki; Takahara, Atsushi.

2005. 論文発表場所 54th SPSJ Annual Meeting 2005, Yokohama, 日本.

研究成果: 会議への寄与タイプ論文

Yamaguchi, G, Otsuka, H & Takahara, A 2005, 'Synthesis of poly(alkoxyamine)s and regeneration of macrocyclic alkoxyxamine by depolymerization' 論文発表場所 54th SPSJ Annual Meeting 2005, Yokohama, 日本, 5/25/05 - 5/27/05, .
Yamaguchi G, Otsuka H, Takahara A. Synthesis of poly(alkoxyamine)s and regeneration of macrocyclic alkoxyxamine by depolymerization. 2005. 論文発表場所 54th SPSJ Annual Meeting 2005, Yokohama, 日本.
Yamaguchi, Go ; Otsuka, Hideyuki ; Takahara, Atsushi. / Synthesis of poly(alkoxyamine)s and regeneration of macrocyclic alkoxyxamine by depolymerization. 論文発表場所 54th SPSJ Annual Meeting 2005, Yokohama, 日本.1 p.
@conference{b593f0e1163243ceaa30d3dbb05d4660,
title = "Synthesis of poly(alkoxyamine)s and regeneration of macrocyclic alkoxyxamine by depolymerization",
abstract = "Recently, a great attention has been paid on polymers with dynamic covalent bonding nature because their structures and properties can be changed and tuned after polymerization. In this study, the authors report the synthesis of a polymer with alkoxyamine-based dynamic covalent bonds and its depolymerization behavior. The poly(alkoxyamine) was synthesized by two methods. One is ring-crossover polymerization of an macrocyclic alkoxyamine (1) and the other is polycondensation of alkoxyamine-based diol and dicarboxylic acid dichloride. The depolymerization of the polymer obtained by either way was conducted in 0.65wt {\%} anisole solution at 398 K for 24 h. After heating, GPC profiles, TLC analysis, and FAB-MS measurement of the reaction mixture confirmed that the generated major product is 1. The monomer percentage of depolymerization of the polymer (2) obtained by ring-crossover polymerization is higher than that of the polymer (3) by polycondensation because 2 is structurally ordered polymer. These findings revealed that both 2 and 3 depolymerized to the monomers principally by the intramolecular radical exchange process under high-dilution conditions, the monomer percentage depends on the method of polymer synthesis.",
author = "Go Yamaguchi and Hideyuki Otsuka and Atsushi Takahara",
year = "2005",
month = "12",
day = "1",
language = "English",
note = "54th SPSJ Annual Meeting 2005 ; Conference date: 25-05-2005 Through 27-05-2005",

}

TY - CONF

T1 - Synthesis of poly(alkoxyamine)s and regeneration of macrocyclic alkoxyxamine by depolymerization

AU - Yamaguchi, Go

AU - Otsuka, Hideyuki

AU - Takahara, Atsushi

PY - 2005/12/1

Y1 - 2005/12/1

N2 - Recently, a great attention has been paid on polymers with dynamic covalent bonding nature because their structures and properties can be changed and tuned after polymerization. In this study, the authors report the synthesis of a polymer with alkoxyamine-based dynamic covalent bonds and its depolymerization behavior. The poly(alkoxyamine) was synthesized by two methods. One is ring-crossover polymerization of an macrocyclic alkoxyamine (1) and the other is polycondensation of alkoxyamine-based diol and dicarboxylic acid dichloride. The depolymerization of the polymer obtained by either way was conducted in 0.65wt % anisole solution at 398 K for 24 h. After heating, GPC profiles, TLC analysis, and FAB-MS measurement of the reaction mixture confirmed that the generated major product is 1. The monomer percentage of depolymerization of the polymer (2) obtained by ring-crossover polymerization is higher than that of the polymer (3) by polycondensation because 2 is structurally ordered polymer. These findings revealed that both 2 and 3 depolymerized to the monomers principally by the intramolecular radical exchange process under high-dilution conditions, the monomer percentage depends on the method of polymer synthesis.

AB - Recently, a great attention has been paid on polymers with dynamic covalent bonding nature because their structures and properties can be changed and tuned after polymerization. In this study, the authors report the synthesis of a polymer with alkoxyamine-based dynamic covalent bonds and its depolymerization behavior. The poly(alkoxyamine) was synthesized by two methods. One is ring-crossover polymerization of an macrocyclic alkoxyamine (1) and the other is polycondensation of alkoxyamine-based diol and dicarboxylic acid dichloride. The depolymerization of the polymer obtained by either way was conducted in 0.65wt % anisole solution at 398 K for 24 h. After heating, GPC profiles, TLC analysis, and FAB-MS measurement of the reaction mixture confirmed that the generated major product is 1. The monomer percentage of depolymerization of the polymer (2) obtained by ring-crossover polymerization is higher than that of the polymer (3) by polycondensation because 2 is structurally ordered polymer. These findings revealed that both 2 and 3 depolymerized to the monomers principally by the intramolecular radical exchange process under high-dilution conditions, the monomer percentage depends on the method of polymer synthesis.

UR - http://www.scopus.com/inward/record.url?scp=33645562684&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=33645562684&partnerID=8YFLogxK

M3 - Paper

AN - SCOPUS:33645562684

ER -