| アイテムタイプ |
学術雑誌論文 / Journal Article(1) |
| 公開日 |
2025-07-23 |
| タイトル |
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タイトル |
Comb Polyurethanes Consisting of Hard Segment Backbones and Dangling Soft Segments for Tailoring Mechanical Properties of Thermoplastics |
| 言語 |
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言語 |
eng |
| キーワード |
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主題Scheme |
Other |
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主題 |
Alcohols |
| キーワード |
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主題Scheme |
Other |
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主題 |
Chemical structure |
| キーワード |
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主題Scheme |
Other |
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主題 |
Noncovalent interactions |
| キーワード |
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主題Scheme |
Other |
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主題 |
Organic polymers |
| キーワード |
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主題Scheme |
Other |
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主題 |
Polymers |
| 資源タイプ |
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資源タイプ |
journal article |
| アクセス権 |
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アクセス権 |
open access |
| 著者 |
Aoki, Daisuke
吉田, 裕安材
網代, 広治
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| 抄録 |
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内容記述タイプ |
Abstract |
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内容記述 |
Graft polymers, including comb and bottlebrush polymers, have emerged as a topological molecular design for tailoring elastic material properties, relying on structural parameters. Yet, in stiffer materials, particularly thermoplastics, the inherent chemical nature of polymers often eclipses this topological design of mechanical properties. Here, we present comb polyurethanes (PUs) with hard segments in the backbone and soft segments in the side chains, with varying structural parameters, side chain spacing, and length. A series of comb PUs were synthesized by combining 4,4′-methylenebis(cyclohexylisocyanate), ethylene glycol, and two types of α-methyl, ω-diol-terminated polyether macromonomers in a polyaddition procedure. These macromonomers with a controlled average molecular mass were synthesized through end group modification of methyl-terminated polyethylene glycol and cationic ring-opening polymerization of THF. Interestingly, the comb PUs displayed a linear correlation between various mechanical properties and backbone volume fraction (φHS), including Young’s modulus, tensile strength, yielding strength, and elongation at break. FT-IR and rheological measurements indicated that the backbones approach each other more freely than scaling analysis predicted. We hypothesized that comb PU has a network structure composed of hard segments diluted by viscoelastic soft segment side chains. Overall, this work highlights the unique mechanical properties of the comb PUs with hydrogen bonds in the backbone in topological designs for thermoplastic mechanical properties. |
| 書誌情報 |
en : Macromolecules
巻 57,
号 2,
p. 640-651,
ページ数 12,
発行日 2024-01-23
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| 出版者 |
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出版者 |
American Chemical Society |
| ISSN |
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収録物識別子タイプ |
EISSN |
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収録物識別子 |
1520-5835 |
| 出版者版DOI |
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関連タイプ |
isVersionOf |
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識別子タイプ |
DOI |
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関連識別子 |
https://doi.org/10.1021/acs.macromol.3c02285 |
| 出版者版URI |
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関連タイプ |
isVersionOf |
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識別子タイプ |
URI |
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関連識別子 |
https://pubs.acs.org/doi/full/10.1021/acs.macromol.3c02285 |
| 権利 |
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権利情報 |
Copyright $00A9 2024 American Chemical Society. This document is the Accepted Manuscript version of a Published Work that appeared in final form in Macromolecules, copyright $00A9 2024 American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see https://pubs.acs.org/doi/full/10.1021/acs.macromol.3c02285 . |
| 著者版フラグ |
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出版タイプ |
AM |
| 助成情報 |
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助成機関名 |
Japan Society for the Promotion of Science (JSPS) |
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研究課題番号 |
JP19J15174 |
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研究課題名 |
トポロジー変換されたポリウレタンによる力学特性の自在設計 |
| 助成情報 |
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助成機関名 |
Japan Society for the Promotion of Science (JSPS) |
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研究課題番号 |
JP20H02799 |
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研究課題名 |
汎用五大高分子の代替となるエステルフリー型生分解性高分子の設計と合成 |
| 助成情報 |
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助成機関名 |
Japan Society for the Promotion of Science (JSPS) |
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研究課題番号 |
JP22H04547 |
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研究課題名 |
N-ビニルアミドに特徴的な水和挙動解析と化学結合型表面修飾による新規ゲル材料創出 |
fulltext (1.9 MB)
