2026-09-01 千葉大学
図：本研究概要
＜関連情報＞
- https://www.chiba-u.ac.jp/news/research-collab/post_712.html
- https://advanced.onlinelibrary.wiley.com/doi/10.1002/adma.74712
犠牲的な機械的結合を利用してエラストマーの靭性を向上させる Harnessing Sacrificial Mechanical Bonds for Toughening Elastomers
Hirogi Yokochi, Norio Tomotsu, Daisuke Aoki, Akira Takahashi, Hideyuki Otsuka
Advanced Materials Published: 30 August 2026
DOI:https://doi.org/10.1002/adma.74712
ABSTRACT
Sacrificial bonds serve as key energy-dissipating motifs, governing the toughness of elastomers. Herein, we propose a robust and versatile strategy to toughen elastomers by precisely tuning the mechanochemical reactivity of sacrificial mechanical bonds through the systematic modification of stopper structures in rotaxane crosslinkers. By varying the size and number of stoppers, the quantitative relationship between the mechanochemical response of sacrificial bonds at the molecular level and the macroscopic mechanical performance of elastomers is elucidated. This is a breakthrough that expands the practical potential of elastomers and establishes a conceptual framework for the rational design of sacrificial bonds and mechanochemicallyinspired polymer systems.
