Cationic ring-opening copolymerization of a cyclic acetal and γ-butyrolactone: monomer sequence transformation and polymerization–depolymerization control by vacuuming or temperature changes

Takebayashi, Kana; Kanazawa, Arihiro; Aoshima, Sadahito

Polymer Journal, 2023, 56, 309-317

Number of Access:144（2025-09-08 19:20 Counts）

Identifier to cite or link to this item: https://hdl.handle.net/11094/93299

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Title
Cationic ring-opening copolymerization of a cyclic acetal and γ-butyrolactone: monomer sequence transformation and polymerization–depolymerization control by vacuuming or temperature changes
Creator
CreatorName
Takebayashi, Kana
NRID
1000050621322 1000050621322
ORCID
0000-0002-8245-6014 0000-0002-8245-6014
researchmap permalink
arihiro-kanazawa arihiro-kanazawa
Scopus Author ID
9044912600 9044912600
CreatorName
Kanazawa, Arihiro
NRID
1000050183728 1000050183728
researchmap permalink
read0068697 read0068697
Scopus Author ID
35495717600 35495717600
CreatorName
Aoshima, Sadahito
Description
Takebayashi K., Kanazawa A., Aoshima S.. Cationic ring-opening copolymerization of a cyclic acetal and γ-butyrolactone: monomer sequence transformation and polymerization–depolymerization control by vacuuming or temperature changes. Polymer Journal , (2023); https://doi.org/10.1038/s41428-023-00847-9.
Abstract
Polymerization–depolymerization equilibrium is a promising strategy for the construction of polymerization systems through which sustainable polymers can undergo reversible polymer–monomer transformations. In this study, we perform monomer sequence transformation and copolymer depolymerization, which are based on transacetalization reactions and polymerization–depolymerization equilibrium, in the cationic ring-opening copolymerization of 2-methyl-1,3-dioxepane and γ-butyrolactone with a protonic acid. The removal of monomer molecules from the copolymerization solution by vacuuming with a vacuum pump caused monomer sequence to transform into pseudo-alternating copolymer chains and subsequently depolymerize into oligomers. Increasing the temperature during copolymerization also resulted in depolymerization, while copolymers were regenerated by the subsequent decrease in temperature.
Publisher
Springer Nature
Source Title
Polymer Journal
Volume (Issue)
56
Page
309-317
Date of Issued
2023-11-10
Language
English
Handle URL
https://hdl.handle.net/11094/93299
PISSN
00323896
eISSN
13490540
Relation.isIdenticalTo
DOI (Publisher Version)
https://doi.org/10.1038/s41428-023-00847-9
Access Rights
open access
CopyRight
This article is licensed under a Creative Commons Attribution 4.0 International License.
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Version of Record
Category
学術雑誌論文 Journal Article