Wu Yanxiao, Yang Ying, Li Cheng, Li Yunbo, Chen Wei
School of Materials Science and Engineering, Shanghai University, Shanghai, China.
i-Lab, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou, China.
Front Bioeng Biotechnol. 2020 Mar 19;8:212. doi: 10.3389/fbioe.2020.00212. eCollection 2020.
Smart fabrics that integrate electronic devices with textiles are emerging as potential candidate for apparel and electronics industries. Soft actuators based on conducting polymers are promising for smart fabrics because of light weight, flexibility, and large deformation under low voltage. However, due to the distinct characteristics of textile and electronic components, the connection between textiles and electronic devices still keeps a challenge in development of smart fabrics. Here, we report an new strategy to prepare a flexible and electroactive textile actuator. The fabric electrolyte was directly coated with an electrode ink, which is composed of Poly(3,4-ethylenedioxythiophene):poly(styrene sulfonic acid) doped with carbonized carbon nanotubes wired zeolite imidazolate framework-8 composite. A pre-treatment of the fabric was made by soaking hydrophobic poly(vinylidene fluoride-co-hexafluoropropylene) to increase the ionic conductivity (6.72 mS cm) and prevent the electrode ink from penetrating through the fabric. It was found that the textile actuator could work in air stably under a low voltage of 3 V and operate at frequencies from 0.1 to 10 Hz with large strain difference (0.28% at 0.1 Hz), fast strain rate (2.8% s at 10 Hz) and good blocking force (0.62 mN at 0.1 Hz). The key to high performance originates from high ionic conductivity of fabric electrolyte and large specific surface area, good mechanical properties of the metal-organic framework derivative-based composite electrodes, which present insights into preparing other smart fabrics such as textiles sensors, flexible displays, and textile energy storage devices.
将电子设备与纺织品集成的智能织物正在成为服装和电子行业的潜在候选产品。基于导电聚合物的软致动器因其重量轻、柔韧性好以及在低电压下能产生大变形而有望用于智能织物。然而，由于纺织品和电子元件的独特特性，在智能织物的开发中，纺织品与电子设备之间的连接仍然是一个挑战。在此，我们报告一种制备柔性且具有电活性的纺织致动器的新策略。织物电解质直接涂覆有一种电极墨水，该电极墨水由掺杂有碳化碳纳米管的聚（3,4 - 乙撑二氧噻吩）：聚（苯乙烯磺酸）与有线沸石咪唑酯骨架 - 8 复合材料组成。通过浸泡疏水性聚（偏二氟乙烯 - 共 - 六氟丙烯）对织物进行预处理，以提高离子电导率（6.72 mS cm）并防止电极墨水渗透过织物。结果发现，该纺织致动器在 3 V 的低电压下可在空气中稳定工作，并且在 0.1 至 10 Hz 的频率下运行，具有大应变差异（0.1 Hz 时为 0.28%）、快速应变率（10 Hz 时为 2.8% s）和良好的阻滞力（0.1 Hz 时为 0.62 mN）。高性能的关键源于织物电解质的高离子电导率和大比表面积，以及基于金属有机框架衍生物的复合电极的良好机械性能，这为制备其他智能织物如纺织品传感器、柔性显示器和纺织储能设备提供了思路。
