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Ultrarobust subzero healable materials enabled by polyphenol nano-assemblies

Author

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  • Nan Wang

    (Sichuan University)

  • Xin Yang

    (Sichuan University)

  • Xinxing Zhang

    (Sichuan University)

Abstract

Bio-inspired self-healing materials hold great promise for applications in wearable electronics, artificial muscles and soft robots, etc. However, self-healing at subzero temperatures remains a great challenge because the reconstruction of interactions will experience resistance of the frozen segments. Here, we present an ultrarobust subzero healable glassy polymer by incorporating polyphenol nano-assemblies with a large number of end groups into polymerizable deep eutectic solvent elastomers. The combination of multiple dynamic bonds and rapid secondary relaxations with low activation energy barrier provides a promising method to overcome the limited self-healing ability of glassy polymers, which can rarely be achieved by conventional dynamic cross-linking. The resulted material exhibits remarkably improved adhesion force at low temperature (promotes 30 times), excellent mechanical properties (30.6 MPa) and desired subzero healing efficiencies (85.7% at −20 °C). We further demonstrated that the material also possesses reliable cryogenic strain-sensing and functional-healing ability. This work provides a viable approach to fabricate ultrarobust subzero healable glassy polymers that are applicable for winter sports wearable devices, subzero temperature-suitable robots and artificial muscles.

Suggested Citation

  • Nan Wang & Xin Yang & Xinxing Zhang, 2023. "Ultrarobust subzero healable materials enabled by polyphenol nano-assemblies," Nature Communications, Nature, vol. 14(1), pages 1-10, December.
  • Handle: RePEc:nat:natcom:v:14:y:2023:i:1:d:10.1038_s41467-023-36461-9
    DOI: 10.1038/s41467-023-36461-9
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    References listed on IDEAS

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    1. Wei Zhang & Baohu Wu & Shengtong Sun & Peiyi Wu, 2021. "Skin-like mechanoresponsive self-healing ionic elastomer from supramolecular zwitterionic network," Nature Communications, Nature, vol. 12(1), pages 1-12, December.
    2. Hongshuang Guo & Yi Han & Weiqiang Zhao & Jing Yang & Lei Zhang, 2020. "Universally autonomous self-healing elastomer with high stretchability," Nature Communications, Nature, vol. 11(1), pages 1-9, December.
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