自愈水凝胶
拓扑(电路)
材料科学
聚合物
离子键合
粘附
纳米技术
化学键
网络拓扑
高分子科学
复合材料
计算机科学
化学
高分子化学
离子
有机化学
数学
组合数学
操作系统
作者
Jiawei Yang,Ruobing Bai,Jianyu Li,Canhui Yang,Xi Yao,Qihan Liu,Joost J. Vlassak,David J. Mooney,Zhigang Suo
标识
DOI:10.1021/acsami.9b07522
摘要
Recent innovations highlight the integration of diverse materials with synthetic and biological hydrogels. Examples include brain–machine interfaces, tissue regeneration, and soft ionic devices. Existing methods of strong adhesion mostly focus on the chemistry of bonds and the mechanics of dissipation but largely overlook the molecular topology of connection. Here, we highlight the significance of molecular topology by designing a specific bond–stitch topology. The bond–stitch topology achieves strong adhesion between preformed hydrogels and various materials, where the hydrogels have no functional groups for chemical coupling, and the adhered materials have functional groups on the surface. The adhesion principle requires a species of polymer chains to form a bond with a material through complementary functional groups and form a network in situ that stitches with the polymer network of a hydrogel. We study the physics and chemistry of this topology and describe its potential applications in medicine and engineering.
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