MXene-Reinforced Liquid Metal/Polymer Fibers via Interface Engineering for Wearable Multifunctional Textiles.
MXene-Reinforced Liquid Metal/Polymer Fibers via Interface Engineering for Wearable Multifunctional Textiles.
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基于界面工程的mxene增强液态金属/聚合物纤维可穿戴多功能纺织品
DOI：
10.1021/acsnano.2c04863
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发表时间：
2022-09
期刊：
影响因子：
17.1
通讯作者：
Peng Yi;Haihan Zou;Yuan-quan Yu;Xufeng Li;Zhenyang Li;G. Deng;Chunyan Chen;Ming Fang
中科院分区：
文献类型：
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作者：
Peng Yi;Haihan Zou;Yuan-quan Yu;Xufeng Li;Zhenyang Li;G. Deng;Chunyan Chen;Ming Fang
可拉伸导电纤维是可穿戴电子纺织品的重要组成部分，但拉伸后导电性往往会下降。在弹性纤维中使用液态金属液滴作为导电填料是一种很有前途的解决方案。然而，迫切需要开发有效的策略来实现LM液滴与衬底的高粘附，并在液滴之间建立有效的电子传递路径。本文采用大尺寸MXene二维导电材料对磁性LM液滴进行改性，制备了MXene/磁性LM/聚（苯乙烯-丁二烯-苯乙烯）复合纤维（MLMS纤维）。在磁性LM液滴表面装饰MXene片，不仅增强了液滴与衬底的粘附性，而且架起了相邻液滴之间的桥梁，建立了高效的导电路径。与纯lm填充纤维相比，MLMS纤维的拉伸强度和伸长率提高了几倍，电导率提高了30倍。这些导电纤维可以很容易地编织成多功能纺织品，即使在大拉伸变形下也具有很强的电磁干扰屏蔽和稳定的焦耳加热性能。此外，MLMS纺织品的其他优点，如高气体/液体渗透性，强耐化学性（酸和碱条件），高/低温耐受性（-40-150°C）和可水洗性，使其特别适合可穿戴应用。
Stretchable conductive fibers are an important component of wearable electronic textiles, but often suffer from a decrease in conductivity upon stretching. The use of liquid metal (LM) droplets as conductive fillers in elastic fibers is a promising solution. However, there is an urgent need to develop effective strategies to achieve high adhesion of LM droplets to substrates and establish efficient electron transport paths between droplets. Here, we use large-sized MXene two-dimensional conductive materials to modify magnetic LM droplets and prepare MXene/magnetic LM/poly(styrene-butadiene-styrene) composite fibers (MLMS fibers). The MXene sheets decorated on the surface of magnetic LM droplets not only enhance the droplet adhesion to substrate but also bridge adjacent droplets to establish efficient conductive paths. MLMS fibers show several-fold improvements in tensile strength and elongation and a 30-fold increase in conductivity compared with pure LM-filled fibers. These conductive fibers can be easily woven into multifunctional textiles, which exhibit strong electromagnetic interference shielding and stable Joule heating performances even under large tensile deformation. In addition, other advantages of MLMS textiles, such as high gas/liquid permeability, strong chemical resistance (acid and alkaline conditions), high/low-temperature tolerance (-40-150 °C) and water washability, make them particularly suitable for wearable applications.