College of Material and Textile Engineering, Jiaxing University , Jiaxing, Zhejiang 314001, China.
Department of Mechanical Engineering and Alan G. MacDiarmid NanoTech Institute, The University of Texas at Dallas , Richardson, Texas 75080, United States.
ACS Appl Mater Interfaces. 2017 Jul 19;9(28):24220-24229. doi: 10.1021/acsami.7b06032. Epub 2017 Jul 5.
Smart textiles are envisioned to make a paradigm shift in wearable technologies to directly impart functionality into the fibers rather than integrating sensors and electronics onto conformal substrates or skin in wearable devices. Among smart materials, piezoelectric fabrics have not been widely reported, yet. Piezoelectric smart fabrics can be used for mechanical energy harvesting, for thermal energy harvesting through the pyroelectric effect, for ferroelectric applications, as pressure and force sensors, for motion detection, and for ultrasonic sensing. We report on mechanical and material properties of the plied nanofibrous piezoelectric yarns as a function of postprocessing conditions including thermal annealing and drawing (stretching). In addition, we used a continuous electrospinning setup to directly produce P(VDF-TrFE) nanofibers and convert them into twisted plied yarns, and demonstrated application of these plied yarns in woven piezoelectric fabrics. The results of this work can be an early step toward realization of piezoelectric smart fabrics.
智能纺织品被认为将使可穿戴技术发生范式转变，直接将功能融入纤维中，而不是将传感器和电子设备集成到可穿戴设备的顺应性基板或皮肤中。在智能材料中，压电织物尚未得到广泛报道。压电智能织物可用于机械能收集，通过热释电效应进行热能收集，用于铁电应用，用作压力和力传感器，用于运动检测和超声感应。我们报告了层压纳米纤维压电纱线的机械和材料性能，作为后处理条件（包括热退火和拉伸（拉伸））的函数。此外，我们使用连续静电纺丝设备直接生产 P(VDF-TrFE)纳米纤维，并将其转化为扭绞层压纱线，并展示了这些层压纱线在机织压电织物中的应用。这项工作的结果可能是实现压电智能织物的早期步骤。
