Yang Wenhao, Zeng Wangyi, Chai Liang, Jiang Yanxin, Deng Longjiang, Yang Guang
School of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu, 611731, China.
National Engineering Research Center of Electromagnetic Radiation Control Materials, University of Electronic Science and Technology of China, Chengdu, 611731, China.
Langmuir. 2023 Sep 12;39(36):12878-12889. doi: 10.1021/acs.langmuir.3c01826. Epub 2023 Aug 30.
Corrosion resistant, durable, and lightweight flexible strain sensor with multiple functionalities is an urgent demand for modern flexible wearable devices. However, currently developed wearable devices are still limited by poor environmental adaptability and functional singleness. In this work, a conductive fabric with multifunctionality in addition to sensing was successfully prepared by assembling zero dimensional silver nanoparticles (AgNPs) and one-dimensional carbon nanotubes (CNTs) layer by layer on the surface of the elastic polypropylene nonwoven fabric (named PACS fabric). Polystyrene--poly(ethylene--butylene)--polystyrene (SEBS) added as binder materials favored strong interaction between conductive fillers and the fabric. Benefiting from the synergistic interaction among the conductive fillers with different dimensions and the fabric, the strain sensor based on the conductive fabric showed high sensitivity (GF up to 8064), wide detection range (0-200%), and excellent stability and durability (more than 10000 stretch-release cycles). Besides, the prepared conductive fabric showed superhydrophobicity (water contact angle = 154°) with excellent durability. This ensured the performance stability of the fabric sensor in harsh environments. At the same time, the fabric also showed excellent photothermal conversion performance (90 °C at a power density of 0.2 W/cm within 20 s). The PACS fabric strain sensor proved excellent performance and environmental adaptability, revealing great potential to be applied in human motion monitoring, self-cleaning, biomedicine, and other fields.
具有多种功能的耐腐蚀、耐用且轻质的柔性应变传感器是现代柔性可穿戴设备的迫切需求。然而，目前开发的可穿戴设备仍然受到环境适应性差和功能单一的限制。在这项工作中，通过在弹性聚丙烯无纺布（命名为PACS织物）表面逐层组装零维银纳米颗粒（AgNPs）和一维碳纳米管（CNTs），成功制备了一种除传感功能外还具有多功能的导电织物。添加的聚苯乙烯-聚（乙烯-丁烯）-聚苯乙烯（SEBS）作为粘合剂材料，有利于导电填料与织物之间的强相互作用。受益于不同维度的导电填料与织物之间的协同相互作用，基于该导电织物的应变传感器表现出高灵敏度（应变因子高达8064）、宽检测范围（0-200%）以及出色的稳定性和耐久性（超过10000次拉伸-释放循环）。此外，制备的导电织物表现出超疏水性（水接触角 = 154°）且耐久性优异。这确保了织物传感器在恶劣环境中的性能稳定性。同时，该织物还表现出优异的光热转换性能（在20秒内功率密度为0.2 W/cm²时温度可达90°C）。PACS织物应变传感器证明了其优异的性能和环境适应性，在人体运动监测、自清洁、生物医学等领域展现出巨大的应用潜力。
