High performance anti-smog window screens via electrospun nanofibers

Scientific studies clearly link air pollution with adverse effects on human health, which includes reduction of cognitive abilities. Hence quality indoor air is essential in rapidly urbanizing societies. The aim of this research work is to develop anti-smog, air permeable, water-proof, and transparent window screens suitable for natural ventilation. For this purpose, we bonded polyethylene terephthalate (PET) nanofibers on PET grids by electrospinning method with relative near spinning distance. During the process, the incomplete solvent evaporation of the collected jet could enhance the bonding of the PET nanofibers to the PET grids. The experimental results showed that the PET nanofibers had a thick deposition at the yarn edge of the PET grids, which also increased the bonding area between the PET nanofibers and the grids. At the same time, PET nanofibers had a thin deposition between the gaps of the PET grids, which not only increased the number of micron-nano-sized holes but also increased the light transmittance of the window screen. After filtration test for 5 h, the PM2.5 filtration efficiency of this anti-smog window screen was high as to 87% and the PET nanofiber window screen still maintained high light transmittance and superhydrophobicity. This research work is a promising way to prepare anti-smog window screens. (C) 2019 Wiley Periodicals, Inc.

科学研究清楚地将空气污染与对人类健康的不良影响联系在一起，其中包括认知能力的下降。因此，高质量的室内空气对于快速城市化社会至关重要。这项研究工作的目的是开发适合自然通风的防雾，透气，防水和透明的窗户玻璃。为此，我们通过静电纺丝法以相对近的纺丝距离将聚对苯二甲酸乙二酯（PET）纳米纤维粘合在PET网格上。在此过程中，收集的射流的溶剂蒸发不完全会增强PET纳米纤维与PET网格的粘合。实验结果表明，PET纳米纤维在PET网格的纱线边缘处沉积较厚，这也增加了PET纳米纤维与网格之间的粘合面积。同时，PET纳米纤维在PET网格的间隙之间具有较薄的沉积，这不仅增加了微米级纳米孔的数量，而且还增加了窗户玻璃的透光率。经过5小时的过滤测试，该防雾窗纱的PM2.5过滤效率高达87％，PET纳米纤维窗纱仍保持高透光率和超疏水性。这项研究工作是制备防雾窗纱的有前景的方法。 （C）2019威利期刊公司

Published: 2020

Journal ：JOURNAL OF APPLIED POLYMER SCIENCE

Impact Factor：2.668

Paper link: https://onlinelibrary.wiley.com/doi/abs/10.1002/app.48657