自愈材料
材料科学
涂层
自愈
基质(水族馆)
聚合物
环氧树脂
伤口愈合
骨愈合
组织修复
纳米技术
复合材料
生物医学工程
计算机科学
外科
医学
病理
替代医学
地质学
海洋学
作者
Kathleen S. Toohey,Nancy R. Sottos,Jennifer A. Lewis,Jeffrey S. Moore,Scott R. White
出处
期刊:Nature Materials
[Springer Nature]
日期:2007-06-10
卷期号:6 (8): 581-585
被引量:1442
摘要
Self-healing polymers composed of microencapsulated healing agents exhibit remarkable mechanical performance and regenerative ability, but are limited to autonomic repair of a single damage event in a given location. Self-healing is triggered by crack-induced rupture of the embedded capsules; thus, once a localized region is depleted of healing agent, further repair is precluded. Re-mendable polymers can achieve multiple healing cycles, but require external intervention in the form of heat treatment and applied pressure. Here, we report a self-healing system capable of autonomously repairing repeated damage events. Our bio-inspired coating-substrate design delivers healing agent to cracks in a polymer coating via a three-dimensional microvascular network embedded in the substrate. Crack damage in the epoxy coating is healed repeatedly. This approach opens new avenues for continuous delivery of healing agents for self-repair as well as other active species for additional functionality.
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