Double-network hydrogels with adjustable surface morphology and multifunctional integration for flexible strain sensors,Soft Matter

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Double-network hydrogels with adjustable surface morphology and multifunctional integration for flexible strain sensors
Soft Matter ( IF 2.9 ) Pub Date : 2021-3-10 , DOI: 10.1039/d1sm00158b
Yang Yu ₁ , Fengjin Xie ₁ , Xinpei Gao ₁ , Liqiang Zheng ₁

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The next generation of high-performance flexible electronics has put forward new demands on the development of ionic conductive hydrogels. In recent years, many efforts have been made toward developing double-network (DN) hydrogels due to their excellent mechanical properties and unique network structures. However, profound challenges remain in achieving controllable surface morphology and multifunctional integration within DN hydrogels. In this work, we report the fabrication of a multifunctional DN hydrogel by multiple cross-linking between an innovative K⁺-containing poly(ionic liquid) (PIL) and κ-carrageenan. The resulting hydrogel possesses fascinating physicochemical properties, ranging from remarkable mechanical properties and machinability to adjustable surface morphology and superior adhesion ability. The extremely versatile DN hydrogels exhibited outstanding potential for the future of wearable strain sensors in real-time monitoring of human health, and the optimized design strategy opens new possibilities for the fabrication of multiscale structured and multifunctional integrated ionic conductive hydrogels.

中文翻译：

具有可调节表面形态和多功能集成功能的双网络水凝胶，用于柔性应变传感器

下一代高性能柔性电子器件对离子导电水凝胶的发展提出了新的要求。近年来，由于其优异的机械性能和独特的网络结构，为开发双网络（DN）水凝胶做出了许多努力。然而，在DN水凝胶内实现可控的表面形态和多功能整合方面仍然存在着巨大的挑战。在这项工作中，我们报告了通过创新性K ⁺之间的多次交联制备多功能DN水凝胶的过程。含聚离子液体（PIL）和κ-角叉菜胶。所得的水凝胶具有引人入胜的理化性质，范围从显着的机械性质和可加工性到可调节的表面形态和卓越的粘合能力。用途广泛的DN水凝胶在可穿戴式应变传感器在人类健康的实时监控方面显示出巨大的潜力，优化的设计策略为制造多尺度结构化和多功能集成离子导电水凝胶开辟了新的可能性。

更新日期：2021-03-29

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