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Scalable, solvent-free transparent film-based air filter with high particulate matter 2.5 filtration efficiency

Over the course of the COVID-19 pandemic, people have realized the importance of wearing a mask. However, conventional nanofiber-based face masks impede communication between people because of their opacity. Moreover, it remains challenging to achieve both high filtration performance and transparenc...

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Autores principales: Lee, Woo Jin, Oh, Seungtae, Park, Jong-Eun, Hwang, Jungho, Eom, Hyeonjin
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Published by Elsevier B.V. 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10300200/
https://www.ncbi.nlm.nih.gov/pubmed/37391139
http://dx.doi.org/10.1016/j.scitotenv.2023.165197
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author Lee, Woo Jin
Oh, Seungtae
Park, Jong-Eun
Hwang, Jungho
Eom, Hyeonjin
author_facet Lee, Woo Jin
Oh, Seungtae
Park, Jong-Eun
Hwang, Jungho
Eom, Hyeonjin
author_sort Lee, Woo Jin
collection PubMed
description Over the course of the COVID-19 pandemic, people have realized the importance of wearing a mask. However, conventional nanofiber-based face masks impede communication between people because of their opacity. Moreover, it remains challenging to achieve both high filtration performance and transparency through fibrous mask filters without using harmful solvents. Herein, scalable transparent film-based filters with high transparency and collection efficiency are fabricated in a facile manner by means of corona discharging and punch stamping. Both methods improve the surface potential of the film while the punch stamping procedure generates micropores in the film, which enhances the electrostatic force between the film and particulate matter (PM), thereby improving the collection efficiency of the film. Moreover, the suggested fabrication method involves no nanofibers and harmful solvents, which mitigates the generation of microplastics and potential risks for the human body. The film-based filter provides a high PM(2.5) collection efficiency of 99.9 % while maintaining a transparency of 52 % at the wavelength of 550 nm. This enables people to distinguish the facial expressions of a person wearing a mask composed of the proposed film-based filter. Moreover, the results of durability experiments indicate that the developed film-based filter is anti-fouling, liquid-resistant, microplastic-free and foldability.
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spelling pubmed-103002002023-06-28 Scalable, solvent-free transparent film-based air filter with high particulate matter 2.5 filtration efficiency Lee, Woo Jin Oh, Seungtae Park, Jong-Eun Hwang, Jungho Eom, Hyeonjin Sci Total Environ Article Over the course of the COVID-19 pandemic, people have realized the importance of wearing a mask. However, conventional nanofiber-based face masks impede communication between people because of their opacity. Moreover, it remains challenging to achieve both high filtration performance and transparency through fibrous mask filters without using harmful solvents. Herein, scalable transparent film-based filters with high transparency and collection efficiency are fabricated in a facile manner by means of corona discharging and punch stamping. Both methods improve the surface potential of the film while the punch stamping procedure generates micropores in the film, which enhances the electrostatic force between the film and particulate matter (PM), thereby improving the collection efficiency of the film. Moreover, the suggested fabrication method involves no nanofibers and harmful solvents, which mitigates the generation of microplastics and potential risks for the human body. The film-based filter provides a high PM(2.5) collection efficiency of 99.9 % while maintaining a transparency of 52 % at the wavelength of 550 nm. This enables people to distinguish the facial expressions of a person wearing a mask composed of the proposed film-based filter. Moreover, the results of durability experiments indicate that the developed film-based filter is anti-fouling, liquid-resistant, microplastic-free and foldability. Published by Elsevier B.V. 2023-06-28 /pmc/articles/PMC10300200/ /pubmed/37391139 http://dx.doi.org/10.1016/j.scitotenv.2023.165197 Text en © 2023 Published by Elsevier B.V. Since January 2020 Elsevier has created a COVID-19 resource centre with free information in English and Mandarin on the novel coronavirus COVID-19. The COVID-19 resource centre is hosted on Elsevier Connect, the company's public news and information website. Elsevier hereby grants permission to make all its COVID-19-related research that is available on the COVID-19 resource centre - including this research content - immediately available in PubMed Central and other publicly funded repositories, such as the WHO COVID database with rights for unrestricted research re-use and analyses in any form or by any means with acknowledgement of the original source. These permissions are granted for free by Elsevier for as long as the COVID-19 resource centre remains active.
spellingShingle Article
Lee, Woo Jin
Oh, Seungtae
Park, Jong-Eun
Hwang, Jungho
Eom, Hyeonjin
Scalable, solvent-free transparent film-based air filter with high particulate matter 2.5 filtration efficiency
title Scalable, solvent-free transparent film-based air filter with high particulate matter 2.5 filtration efficiency
title_full Scalable, solvent-free transparent film-based air filter with high particulate matter 2.5 filtration efficiency
title_fullStr Scalable, solvent-free transparent film-based air filter with high particulate matter 2.5 filtration efficiency
title_full_unstemmed Scalable, solvent-free transparent film-based air filter with high particulate matter 2.5 filtration efficiency
title_short Scalable, solvent-free transparent film-based air filter with high particulate matter 2.5 filtration efficiency
title_sort scalable, solvent-free transparent film-based air filter with high particulate matter 2.5 filtration efficiency
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10300200/
https://www.ncbi.nlm.nih.gov/pubmed/37391139
http://dx.doi.org/10.1016/j.scitotenv.2023.165197
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