Fabrication of Janus Composite Membranes with a Gradient Pore Structure Based on Melt Electrowriting and Solution Electrospinning for Directional Water Transport,Langmuir

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Fabrication of Janus Composite Membranes with a Gradient Pore Structure Based on Melt Electrowriting and Solution Electrospinning for Directional Water Transport
Langmuir ( IF 3.7 ) Pub Date : 2023-05-23 , DOI: 10.1021/acs.langmuir.3c00738
Guoping Zhang ₁ , Yu Xu ₁ , Yue Sun _{1,

2} , Xiangyu Ye ₃ , Lei Du _{1,

2} , Huaizhong Xu ₄

Affiliation

As a functional textile, the directional water transport textile has been widely used in daily life due to the ability of excellent moisture absorption and quick drying. However, it is still a great challenge to construct a textile that ensures water to transport rapidly from the skin to the outer environment (positive direction) and prevents the skin from being rewetted effectively in the reverse direction. Herein, this study aims to improve the ability of the hydrophobic layer in moisture management using melt electrowriting (MEW) to fabricate gradient pore structures precisely. The pore sizes in different layers can be tailored by altering the collector speed, and thus, the configuration of the pore structure dominates the process of water transportation. The unique multilayered structure achieves the directional water transport effects by improving the permeability with large pores and hindering the transport with small pores in the reverse direction. Meanwhile, we use solution electrospinning (SE) technology to fabricate the hydrophilic layer. The constructed composite membranes exhibit excellent performance with a one-way transport index R up to 1281% and a desired overall moisture management capacity (OMMC) of 0.87. This research outlines an approach to fabricating Janus membranes to enhance its directional water transport performance, facilitating the MEW technique to be applied on the more expanded field for directional water transport textiles.

中文翻译：

基于熔体电写和溶液静电纺丝的定向水传输制备具有梯度孔结构的 Janus 复合膜

定向输水纺织品作为一种功能性纺织品，以其优异的吸湿速干能力，在日常生活中得到了广泛的应用。然而，构建一种确保水从皮肤快速传输到外部环境（正方向）并防止皮肤在反方向有效再润湿的纺织品仍然是一个巨大的挑战。在此，本研究旨在使用熔体电写 (MEW) 精确制造梯度孔结构，提高疏水层在水分管理中的能力。可以通过改变收集器速度来调整不同层中的孔径，因此，孔结构的配置在水传输过程中占主导地位。独特的多层结构通过大孔提高渗透性，小孔阻碍反向输水，达到定向输水效果。同时，我们使用溶液静电纺丝（SE）技术来制造亲水层。构建的复合膜表现出优异的单向传输性能R高达 1281%，所需的整体水分管理能力 (OMMC) 为 0.87。本研究概述了一种制造 Janus 膜以增强其定向输水性能的方法，促进 MEW 技术应用于更广泛的定向输水纺织品领域。

更新日期：2023-05-23

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