Li Xingchao, Hou Kai, Long Yue, Song Kai
Key Laboratory of Bio-Inspired Materials and Interfacial Science, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China.
School of Future Technology, University of Chinese Academy of Sciences, Beijing 100049, P. R. China.
ACS Appl Mater Interfaces. 2024 May 15;16(19):25366-25373. doi: 10.1021/acsami.4c03471. Epub 2024 May 6.
Liquid metal (LM)-based polymers have received growing interest for wearable health monitoring, electronic skins, and soft robotics. However, fabricating multifunctional LM-based polymers, in particular, featuring a convenient shaping ability while offering excellent deformability and conductivity remains a challenge. To overcome this obstacle, here, we propose a strategy to prepare LM-Gel "plasticine" (LGP) with great deformability, which is composed of a PVA (poly(vinyl alcohol)) soft network and an LM conductive phase. LGP can be easily constructed into different shapes such as plasticine and can be applied to different conditions (such as building a 3D circuit, circuit repair, and switch). Meanwhile, LGP has great conductivity (2.3 × 10 S/m) after surface annealing. Besides, LGP has a good electric heating performance, which shows the potential for application in wearable heating devices. Thus, this approach not only provides a way to prepare LM-polymer plasticine but also provides a novel perspective toward extending the applied range of LM-polymer composites.
基于液态金属（LM）的聚合物在可穿戴健康监测、电子皮肤和软体机器人领域受到了越来越多的关注。然而，制造多功能的基于LM的聚合物，尤其是在具有出色的可变形性和导电性的同时具备便捷的成型能力，仍然是一项挑战。为了克服这一障碍，在此我们提出一种制备具有极大可变形性的LM-凝胶“橡皮泥”（LGP）的策略，它由聚乙烯醇（PVA）软网络和LM导电相组成。LGP可以像橡皮泥一样轻松地构建成不同形状，并可应用于不同条件下（如构建3D电路、电路修复和开关）。同时，LGP在表面退火后具有很高的导电性（2.3×10 S/m）。此外，LGP具有良好的电加热性能，这显示出其在可穿戴加热设备中的应用潜力。因此，这种方法不仅提供了一种制备LM-聚合物橡皮泥的途径，还为扩展LM-聚合物复合材料的应用范围提供了新的视角。
