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Preparation and characterization of multilayered superfine fibrous mat with the function of directional water transport

机译：具有定向水传输功能的多层超细纤维毡的制备与表征

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Directional water transport in garment materials plays a pivotal role in maintaining human thermal and wet comfort. In the present work, a new type of multilayer fibrous mat with the specific function of directional water transport was prepared via the combination of melt-electrospinning and solution-electrospinning. The polypropylene (PP) fibrous layer prepared by melt-electrospinning technology was located in the inner layer (next to the skin), while the polyacrylonitrile-containing hydrophilic nano-silica particles (PAN-SiO _(2) ) layer with remarkable hydrophilicity was located in the outer layer, which could effectively transport water to the outer surface of the composites. Treatment of the as-prepared PAN-SiO _(2) /PP with an alkaline aqueous solution of dopamine not only increased the wettability of the PP layer, but also further improved the hydrophilicity of PAN-SiO _(2) . A layer of cotton woven mesh was added between the TPP layer and TPAN-SiO _(2) to form a sandwich structure in order to accelerate water transport in the bilayered fibrous mats. The directional water transport, mechanical flexibility, and permeability of the prepared multilayered superfine fibrous mat were characterized systematically. The experimental results exhibited that TPAN-SiO _(2) /cotton mesh/TPP exhibited an excellent accumulative one-way transport index (AOTI, 1071%), remarkable overall moisture management capacity (OMMC, 0.88), and reasonably high water vapor transport rate (WVT, 11.6 kg d ~(?1) m ~(?2) ), indicating it is a promising candidate for the development of novel textile materials for use in the field of sportswear for fast sweat release applications.
机译：服装材料中的定向水传输在维持人体的热和湿舒适性方面起着关键作用。在目前的工作中，通过熔融电纺丝和溶液电纺丝的结合，制备了一种新型的具有定向水传输功能的多层纤维毡。通过熔融静电纺丝技术制备的聚丙烯（PP）纤维层位于内层（皮肤附近），而具有明显亲水性的含聚丙烯腈的亲水性纳米二氧化硅颗粒（PAN-SiO _（2））层为位于外层中，可以有效地将水输送到复合材料的外表面。用多巴胺的碱性水溶液处理所制备的PAN-SiO_（2）/ PP不仅增加了PP层的润湿性，而且进一步提高了PAN-SiO_（2）的亲水性。在TPP层和TPAN-SiO_（2）之间添加一层棉织网，以形成夹心结构，以加快水在双层纤维垫中​​的传输。系统地表征了制备的多层超细纤维毡的定向水传输，机械柔韧性和渗透性。实验结果表明，TPAN-SiO_（2）/棉网/ TPP表现出优异的累积单向输送指数（AOTI，1071％），显着的总体水分管理能力（OMMC，0.88）和相当高的水蒸气输送能力速率（WVT，11.6kg d〜（≤1）m〜（≤2）），表明它是开发用于快速汗液释放的运动服领域的新型纺织材料的有前途的候选者。

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