高导电 MXene/PEDOT：PSS 集成聚（N-异丙基丙烯酰胺）水凝胶，用于仿生体感软致动器,Advanced Functional Materials

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高导电 MXene/PEDOT：PSS 集成聚（N-异丙基丙烯酰胺）水凝胶，用于仿生体感软致动器
Advanced Functional Materials ( IF 18.5 ) Pub Date : 2023-03-10 , DOI: 10.1002/adfm.202214867
Pan Xue ₁ , Cristian Valenzuela ₁ , Shaoshuai Ma ₁ , Xuan Zhang ₁ , Jiazhe Ma ₁ , Yuanhao Chen ₁ , Xinhua Xu ₁ , Ling Wang ₁

Affiliation

自然界中许多生物体的复杂传感和驱动能力激发了科学家们开发仿生体感软体机器人的灵感。在此，报道了用于仿生体感软致动器的均质和高导电水凝胶的设计和制造。导电水凝胶是通过导电表面功能化 MXene/聚（3,4-乙烯二氧噻吩）/聚（苯乙烯磺酸盐）油墨与热响应聚（N-异丙基丙烯酰胺）水凝胶的原位共聚合成的。发现所得水凝胶具有高电导率（11.76 S m ^-1)、应变灵敏度（GF 为 9.93）、宽工作应变范围（≈560% 应变）以及在 100% 应变下超过 300 次加载-卸载循环后的高稳定性。重要的是，通过将导电水凝胶与结构有色聚合物化学集成，开发出具有快速响应、光驱动远程控制和自感知能力的形状可编程体感水凝胶致动器。作为概念验证图，结构彩色水凝胶致动器用于设计人造章鱼、人造鱼和可通过实时电阻变化同时监测自身运动的软抓手的光驱动可编程形状变形. 这项工作有望为具有自我感知和驱动能力的先进体感材料的设计提供新的见解，

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Highly Conductive MXene/PEDOT:PSS-Integrated Poly(N-Isopropylacrylamide) Hydrogels for Bioinspired Somatosensory Soft Actuators

Sophisticated sensing and actuation capabilities of many living organisms in nature have inspired scientists to develop biomimetic somatosensory soft robots. Herein, the design and fabrication of homogeneous and highly conductive hydrogels for bioinspired somatosensory soft actuators are reported. The conductive hydrogels are synthesized by in situ copolymerization of conductive surface-functionalized MXene/Poly(3,4-ethylenedioxythiophene)/poly(styrenesulfonate) ink with thermoresponsive poly(N-isopropylacrylamide) hydrogels. The resulting hydrogels are found to exhibit high conductivity (11.76 S m⁻¹), strain sensitivity (GF of 9.93), broad working strain range (≈560% strain), and high stability after over 300 loading–unloading cycles at 100% strain. Importantly, shape-programmable somatosensory hydrogel actuators with rapid response, light-driven remote control, and self-sensing capability are developed by chemically integrating the conductive hydrogels with a structurally colored polymer. As the proof-of-concept illustration, structurally colored hydrogel actuators are applied for devising light-driven programmable shape-morphing of an artificial octopus, an artificial fish, and a soft gripper that can simultaneously monitor their own motions via real-time resistance variation. This work is expected to offer new insights into the design of advanced somatosensory materials with self-sensing and actuation capabilities, and pave an avenue for the development of soft-matter-based self-regulatory intelligence via built-in feedback control that is of paramount significance for intelligent soft robotics and automated machines.

更新日期：2023-03-10

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