自愈水凝胶
材料科学
聚合物
脆性
微尺度化学
纳米技术
立体光刻
3D打印
复合材料
高分子化学
数学
数学教育
作者
Robert S. Jordan,Jacob Frye,Vı́ctor Hernández,Isabel Nicolás de Prado,Adrian Giglio,Nastaran Abbasizadeh,Miguel Flores-Martinez,Kiana Shirzad,Bohao Xu,Ian M. Hill,Yue Wang
摘要
Conducting polymer hydrogels combine electrical conductivity and tunable water content, rendering them strong candidates for a range of applications including biosensors, cell culture platforms, and energy storage devices. However, these hydrogels are mechanically brittle and prone to damage, prohibiting their use in emerging applications involving dynamic movement and large mechanical deformation. Here, we demonstrate that applying the concept of architecture to conducting polymer hydrogels can circumvent these impediments. A stereolithography 3D printing method is developed to successfully fabricate such hydrogels in complex lattice structures. The resulting hydrogels exhibit elastic compressibility, high fracture strain, enhanced cycling stability, and damage-tolerant properties despite their chemical composition being identical to their brittle, solid counterparts. Furthermore, concentrating the deformation to the 3D geometry, rather than polymer microstructure, effectively decouples the mechanical and electrical properties of the hydrogel lattices from their intrinsic properties associated with their chemical composition. The confluence of these new physical properties for conducting polymer hydrogels opens broad opportunities for a myriad of dynamic applications.
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