Flexible and transparent composite nanofibre membrane that was fabricated via a

Air particulate pollution from ever-increasing industrialization poses an enormous threat to public health. Thus, the development of a green air filter with high efficiency and performance is of urgent necessity. In this study, we introduce a new effective air filtration membrane that can be used for outdoor protection. The air filter's composite nanofibre materials were prepared from polyvinyl alcohol (PVA)-sodium lignosulfonate (LS) via a "green" electrospinning method and thermal crosslinking. The addition of LS helped increase the PM2.5 removal efficiency compared to that of a pure PVA nanofibre membrane. The pressure drops of the electrospun PVA-LS membranes exceeded those of the pristine PVA air filter. The remarkable air filtration performance was maintained even after 10 cycles of circulation filtration. In addition, the PVA-LS composite nanofibre membrane exhibited excellent mechanical properties and transparency due to the introduction of LS. This study provides new insight into the design and development of high-performance and high-visibility green filter media, which include personal protection and building screens. (C) 2020 Elsevier Inc. All rights reserved.

工业的不断发展所带来的空气微粒污染对公众健康构成了巨大威胁。因此，需要开发具有高效率和性能的绿色空气过滤器。在这项研究中，我们介绍了一种可用于户外防护的新型有效空气过滤膜。空气过滤器的复合纳米纤维材料是由聚乙烯醇（PVA）-木质素磺酸钠（LS）通过“绿色”静电纺丝方法和热交联制备的。与纯PVA纳米纤维膜相比，添加LS有助于提高PM2.5去除效率。电纺PVA-LS膜的压降超过了原始PVA空气过滤器的压降。即使经过10次循环过滤，仍可保持出色的空气过滤性能。另外，由于引入了LS，PVA-LS复合纳米纤维膜表现出优异的机械性能和透明性。这项研究为高性能和高可见性的绿色滤材的设计和开发提供了新的见解，其中包括个人防护和建筑屏风。 （C）2020 Elsevier Inc.保留所有权利。

Published: 2021

Journal ：JOURNAL OF COLLOID AND INTERFACE SCIENCE

Impact Factor：7.837

Paper link: https://www.sciencedirect.com/science/article/abs/pii/S0021979720311188