自愈水凝胶
材料科学
软机器人
执行机构
肿胀 的
弯曲
人工肌肉
聚合物
甲基丙烯酸酯
化学工程
水溶液
纳米技术
变形(气象学)
智能材料
复合材料
化学
高分子化学
计算机科学
聚合
人工智能
物理化学
工程类
作者
Lorenzo Migliorini,Tommaso Santaniello,Yunsong Yan,Cristina Lenardi,P. Milani
标识
DOI:10.1016/j.snb.2016.01.110
摘要
We present the synthesis, fabrication and electro-mechanical characterization of a novel electro-responsive hydrogel based on Na-4-vinylbenzenesulfonate (Na-4-VBS) that can operate as a fast response bending actuator in a low voltage regime (0.2–5 V), in NaCl aqueous solutions. The bending speed can reach values up to 22°/s at 3 V and of 2.7°/s at 1 V. The responsive behavior of the benders was observed in physiological environments as well, such as phosphate buffer solution (PBS) and Dulbecco’s Modified Eagle’s Medium (DMEM) and exhibited similar performance. The material is a co-polymer comprising also hydroxyethyl methacrylate (HEMA) and acrylonitrile (AN), to confer high hydrophilicity to the structure and to enhance its elastic properties. According to the swelling and electro-mechanical testing results, the electrically driven deformation of the hydrogels was interpreted as a dynamic osmotic equilibrium effect taking place at the interface between the polymer and the surrounding medium, induced by the free ionic species migration throughout the polymer. This material constitutes a promising solution for the design and production of highly performing soft underwater actuators and biomimetic smart systems that can be controllably operated at the macro and mesoscale in fluids of biological interest, with minimal power consumption and below the standard potential of water electrolysis.
科研通智能强力驱动
Strongly Powered by AbleSci AI