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Bio-based and photocrosslinked electrospun antibacterial nanofibrous membranes for air filtration

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Air pollution is becoming more and more severe especially in developing countries. It is urgent to seek an effective protection for the unacceptable levels of the air pollution. Up to date, the air filtration is a widely used method to protect us from the air pollution. However, most of the air filtration membranes in fabrication process is required to use harmful organic solvents. Here, we report a human friendly, multifunctional and bio-based chitosan/poly (vinyl alcohol) air filtration membrane via green electrospinning and UV-cured. This green approach avoid use hazardous organic solvents which caused the residual solvents could bring the human subprime damage. Specifically, the superhydrophobic silica nanoparticles is introduced on the nanofibers to formation of the rough surface to increase filtration efficiency. In addition, the Ag nanoparticles (NPs) are fabricated on the surface through UV reduction of AgNO3 to achieve the aim of antibacterial treatment. The CS/PVA@SiO2/Ag NPs membranes not only possess excellent filtration performance but efficiently antibacterial activities. As this green, multifunctional and bio-based CS/PVA@SiO2/Ag NPs air filtration membranes have several superior features like high air filtration performance, biological compatibility and antibacterial, it has great potential application in eco-friendly air filtration materials, especially in personal air filtration materials.

空气污染越来越严重,尤其是在发展中国家。迫切需要对不可接受的空气污染水平寻求有效的保护。迄今为止,空气过滤是一种广泛使用的保护我们免受空气污染的方法。但是,在制造过程中,大多数空气过滤膜都需要使用有害的有机溶剂。在这里,我们报道了一种通过绿色静电纺丝和紫外线固化的人类友好型多功能生物基壳聚糖/聚乙烯醇空气过滤膜。这种绿色方法避免使用有害的有机溶剂,因为有机溶剂会导致残留的溶剂对人的次贷造成损害。具体地,将超疏水性二氧化硅纳米颗粒引入纳米纤维上以形成粗糙表面以提高过滤效率。此外,通过紫外线还原AgNO3在表面上制备了Ag纳米颗粒(NPs),以达到抗菌处理的目的。 CS / PVA @ SiO2 / Ag NPs膜不仅具有出色的过滤性能,而且还具有高效的抗菌活性。由于这种绿色的,多功能的生物基CS / PVA @ SiO2 / Ag NPs空气过滤膜具有高空气过滤性能,生物相容性和抗菌性等若干优越特性,因此在环保型空气过滤材料中具有巨大的潜在应用,特别是在个人空气过滤材料。


Bio-based and photocrosslinked electrospun antibacterial nanofibrous membranes for air filtration

Published: 2020

Journal :CARBOHYDRATE POLYMERS

Impact Factor:7.641

Paper link: https://www.sciencedirect.com/science/article/abs/pii/S0144861718311500


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