Tough and Water-Insensitive Self-Healing Elastomer for Robust Electronic Skin
Tough and Water-Insensitive Self-Healing Elastomer for Robust Electronic Skin
复制标题
用于坚固耐用电子皮肤的坚韧且耐水的自修复弹性体
DOI：
10.1002/adma.201706846
复制
发表时间：
2018-03-27
影响因子：
29.4
通讯作者：
Bao, Zhenan
中科院分区：
文献类型：
--
作者：
Kang, Jiheong;Son, Donghee;Bao, Zhenan
随着时间的推移，电子皮肤预计会经历明显的磨损。因此，同时具有柔软和高断裂能的自修复可拉伸材料，即高损伤容忍度或不扩展的小裂纹，是实现鲁棒电子皮肤的基本要求。然而，先前报道的弹性体，特别是自修复聚合物大多是粘弹性的，缺乏高机械韧性。本文报道了一类通过合理设计多强度氢键相互作用交联的新型高分子材料。聚合物薄膜中的超分子网络实现了卓越的机械性能，如缺口不敏感的高拉伸性（1200%），12 000 J m（-2）的高韧性，以及即使在人工汗液中也能自主自愈。这种坚韧的自修复材料可以在晶圆尺度上制造出坚固的、可拉伸的自修复电子皮肤设备，这将为未来的软机器人和皮肤假肢提供新的方向。
An electronic (e-) skin is expected to experience significant wear and tear over time. Therefore, self-healing stretchable materials that are simultaneously soft and with high fracture energy, that is high tolerance of damage or small cracks without propagating, are essential requirements for the realization of robust e-skin. However, previously reported elastomers and especially self-healing polymers are mostly viscoelastic and lack high mechanical toughness. Here, a new class of polymeric material crosslinked through rationally designed multistrength hydrogen bonding interactions is reported. The resultant supramolecular network in polymer film realizes exceptional mechanical properties such as notch-insensitive high stretchability (1200%), high toughness of 12 000 J m(-2), and autonomous self-healing even in artificial sweat. The tough self-healing materials enable the wafer-scale fabrication of robust and stretchable self-healing e-skin devices, which will provide new directions for future soft robotics and skin prosthetics.