自愈
弹性体
材料科学
聚二甲基硅氧烷
聚合物
复合材料
纳米技术
二硫键
电子材料
过冷
伤口愈合
自愈材料
化学工程
化学
物理
工程类
病理
热力学
生物
免疫学
替代医学
医学
生物化学
作者
Hongshuang Guo,Yi Han,Weiqiang Zhao,Jing Yang,Lei Zhang
标识
DOI:10.1038/s41467-020-15949-8
摘要
Abstract Developing autonomous self-healing materials for applications in harsh conditions is challenging because the reconstruction of interaction in material for self-healing will experience significant resistance and fail. Herein, a universally self-healing and highly stretchable supramolecular elastomer is designed by synergistically incorporating multi-strength H-bonds and disulfide metathesis in polydimethylsiloxane polymers. The resultant elastomer exhibits high stretchability for both unnotched (14000%) and notched (1300%) samples. It achieves fast autonomous self-healing under universal conditions, including at room temperature (10 min for healing), ultralow temperature (−40 °C), underwater (93% healing efficiency), supercooled high-concentrated saltwater (30% NaCl solution at −10 °C, 89% efficiency), and strong acid/alkali environment (pH = 0 or 14, 88% or 84% efficiency). These properties are attributable to synergistic interaction of the dynamic strong and weak H-bonds and stronger disulfide bonds. A self-healing and stretchable conducting device built with the developed elastomer is demonstrated, thereby providing a direction for future e-skin applications.
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