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October 8, 2025Small

Engineering of Chain Extender Flexibility and Hierarchical Hydrogen Bonding Toward Ultra‐Low‐Temperature Poly(Urethane‐Urea) Elastomers with Exceptional Toughness

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Authors

KLKun LuoXWXiaoyue WangQDQian Dou

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Overview

This study demonstrates improved toughness and flexibility in elastomers, indicating potential for ultra-low-temperature applications.

Key Points

  • Remarkable elongation at break of 842.6%, allowing for extensive material stretching.
  • Elastomers maintain excellent mechanical properties at -70 °C, overcoming conventional low-temperature limitations.
  • The combination of rigid and flexible segments enhances toughness through hierarchical hydrogen bonding.
  • Microscopic analysis reveals pronounced microphase separation contributing to exceptional ductility and durability.

Cite This Study

Luo et al. (2025) studied this question.

synapsesocial.com/papers/68e6d7971ffa7aa7d63d1689https://doi.org/10.1002/smll.202509686
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