Flexible and adhesive liquid-free ionic conductive elastomers toward human–machine interaction,Soft Matter

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Flexible and adhesive liquid-free ionic conductive elastomers toward human–machine interaction
Soft Matter ( IF 2.9 ) Pub Date : 2022-08-26 , DOI: 10.1039/d2sm00865c
Zhenyu Xu _{1,

2} , Rui Li ₁ , Huijing Li _{1,

2} , Guorong Gao _{1,

2} , Tao Chen _{1,

2}

Affiliation

Based on the demand for flexible human–machine interaction devices, it is urgent to develop high-performance stretchable ionic conductive materials. However, most gel-based ionic conductive materials are composed of crosslinked polymer networks that contain liquids, and suffer from limitations of solvent volatilization and leakage, and the cross-linking restricts the movement and diffusion of polymer chains, making it difficult for them to achieve adhesion. Here, we introduce flexible and adhesive liquid-free ionic conductive elastomers (ICE) with salt using a non-crosslinked polymer strategy. The ICE show a transparency of 89.5%, T_g of −51.2 °C, negligible weight loss at 200 °C, a tensile fracture strain of 289.5%, and an initial modulus of 45.7 kPa, and is adhesive to various solid surfaces with an interfacial toughness of 11.4 to 41.4 J m⁻². Moreover, the ICE exhibit stable electrical conductivity under ambient conditions. Triboelectric nanogenerators (TENGs) were assembled on an electrical shell surface with the adhesive ICE as an electrostatic induction layer and were displayed for use as human–machine interactive keyboards. This approach opens a route to making adhesive and stable polymer ionic conductors for human–machine interaction.

中文翻译：

用于人机交互的柔性且无粘性的无液体离子导电弹性体

基于对柔性人机交互设备的需求，开发高性能可拉伸离子导电材料迫在眉睫。然而，大多数基于凝胶的离子导电材料是由含有液体的交联聚合物网络组成，存在溶剂挥发和泄漏的限制，而且交联限制了聚合物链的运动和扩散，难以实现附着力。在这里，我们使用非交联聚合物策略介绍了具有盐的柔性和粘性无液体离子导电弹性体 (ICE)。ICE 显示透明度为 89.5%，T _g-51.2 °C，在 200 °C 时的重量损失可忽略不计，拉伸断裂应变为 289.5%，初始模量为 45.7 kPa，可与各种固体表面粘合，界面韧性为 11.4 至 41.4 J m ^-2。此外，ICE 在环境条件下表现出稳定的导电性。摩擦纳米发电机 (TENG) 组装在电气外壳表面，粘合剂 ICE 作为静电感应层，并被展示用作人机交互键盘。这种方法为制造用于人机交互的粘性和稳定的聚合物离子导体开辟了一条途径。

更新日期：2022-08-26

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