Performance and durability of conductive yarns are essential factors to consider in the development of smart garments for textile computing applications. Conductive yarns and materials are used in various consumer and industrial products, however, their performance after washing, which is present with smart garments, is an unconventional, yet important consideration. This study investigates the impact of domestic washing on conductive silver-plated nylon and carbon-containing nylon yarns knitted into different patterns, simulating the incorporation of the conductive yarns into smart textiles. Various factors such as conductive yarn materials, types of knitting machine, and conductive feature patterns were considered. The resistance of silver-based textile electrodes increased by 100–300% over 50 wash cycles. Sulfidation and mechanical abrasion are the two main reasons for silver yarn degradation. The resistance of carbon-based textile electrodes stabilized after about five laundry cycles, showing little to no change afterward. Finally, the best performing silver and carbon electrodes were compared with gold-standard hydrogel electrodes for skin-electrode impedance and electrocardiogram measurement before and after 35 times of laundering. The results obtained demonstrated that both of the textile electrodes performed comparably to hydrogel electrodes and can be considered for continuous monitoring of biopotential signals from the human body.

中文翻译：

---

用于生物医学纺织计算的坚固耐用的多功能导电纱

导电纱的性能和耐用性是开发用于纺织计算应用的智能服装时必须考虑的重要因素。导电纱和材料被用于各种消费品和工业产品，但是，智能服装所具有的洗涤后的性能是非常规的，但仍是重要的考虑因素。这项研究调查了家用洗涤对编织成不同图案的导电镀银尼龙和含碳尼龙纱的影响，模拟了将导电纱掺入智能纺织品中的过程。考虑了各种因素，例如导电纱线材料，编织机的类型和导电特征图案。在50个清洗周期中，银基纺织电极的电阻增加了100-300％。硫化和机械磨损是银纱降解的两个主要原因。碳基纺织电极的电阻在大约五个洗涤周期后稳定下来，此后几乎没有变化。最后，在清洗35次之前和之后，将性能最好的银和碳电极与金标准水凝胶电极进行比较，以进行皮肤电极阻抗和心电图测量。所获得的结果表明，两个纺织电极的性能均与水凝胶电极相当，可以考虑用于连续监测来自人体的生物电势信号。在清洗35次之前和之后，将性能最好的银和碳电极与金标准水凝胶电极进行比较，以进行皮肤电极阻抗和心电图测量。所获得的结果表明，两个纺织电极的性能均与水凝胶电极相当，可以考虑用于连续监测来自人体的生物电势信号。在清洗35次之前和之后，将性能最好的银和碳电极与金标准水凝胶电极进行比较，以进行皮肤电极阻抗和心电图测量。所获得的结果表明，两个纺织电极的性能均与水凝胶电极相当，可以考虑用于连续监测来自人体的生物电势信号。