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Visualization of the interaction of water aerosol and nanofiber mesh
Face masks play a critical role in reducing the transmission risk of COVID-19 and other respiratory diseases. Masks made with nanofibers have drawn increasingly more attention because of their higher filtration efficiency, better comfort, and lower pressure drop. However, the interactions and conseq...
Autores principales: | , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
AIP Publishing LLC
2021
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8450899/ https://www.ncbi.nlm.nih.gov/pubmed/34552315 http://dx.doi.org/10.1063/5.0061847 |
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author | Yu, Boyang Chen, Jian Chen, Daner Chen, Rouxi Wang, Yuenan Tang, Xiujuan Wang, Hsing-Lin Wang, Lian-Ping Deng, Weiwei |
author_facet | Yu, Boyang Chen, Jian Chen, Daner Chen, Rouxi Wang, Yuenan Tang, Xiujuan Wang, Hsing-Lin Wang, Lian-Ping Deng, Weiwei |
author_sort | Yu, Boyang |
collection | PubMed |
description | Face masks play a critical role in reducing the transmission risk of COVID-19 and other respiratory diseases. Masks made with nanofibers have drawn increasingly more attention because of their higher filtration efficiency, better comfort, and lower pressure drop. However, the interactions and consequences of the nanofibers and microwater droplets remain unclear. In this work, the evolution of fibers made of polymers with different contact angles, diameters, and mesh sizes under water aerosol exposure is systematically visualized. The images show that capillarity is very strong compared with the elasticity of the nanofiber. The nanofibers coalesce irreversibly during the droplet capture stage as well as the subsequent liquid evaporation stage. The fiber coalescence significantly reduces the effective fiber length for capturing aerosols. The nanofiber mesh that undergoes multiple droplet capture/evaporation cycles exhibits a fiber coalescing fraction of 40%–58%. The hydrophobic and orthogonally woven fibers can reduce the capillary forces and decrease the fiber coalescing fraction. This finding is expected to assist the proper design, fabrication, and use of face masks with nanofibers. It also provides direct visual evidence on the necessity to replace face masks frequently, especially in cold environments. |
format | Online Article Text |
id | pubmed-8450899 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | AIP Publishing LLC |
record_format | MEDLINE/PubMed |
spelling | pubmed-84508992021-09-20 Visualization of the interaction of water aerosol and nanofiber mesh Yu, Boyang Chen, Jian Chen, Daner Chen, Rouxi Wang, Yuenan Tang, Xiujuan Wang, Hsing-Lin Wang, Lian-Ping Deng, Weiwei Phys Fluids (1994) ARTICLES Face masks play a critical role in reducing the transmission risk of COVID-19 and other respiratory diseases. Masks made with nanofibers have drawn increasingly more attention because of their higher filtration efficiency, better comfort, and lower pressure drop. However, the interactions and consequences of the nanofibers and microwater droplets remain unclear. In this work, the evolution of fibers made of polymers with different contact angles, diameters, and mesh sizes under water aerosol exposure is systematically visualized. The images show that capillarity is very strong compared with the elasticity of the nanofiber. The nanofibers coalesce irreversibly during the droplet capture stage as well as the subsequent liquid evaporation stage. The fiber coalescence significantly reduces the effective fiber length for capturing aerosols. The nanofiber mesh that undergoes multiple droplet capture/evaporation cycles exhibits a fiber coalescing fraction of 40%–58%. The hydrophobic and orthogonally woven fibers can reduce the capillary forces and decrease the fiber coalescing fraction. This finding is expected to assist the proper design, fabrication, and use of face masks with nanofibers. It also provides direct visual evidence on the necessity to replace face masks frequently, especially in cold environments. AIP Publishing LLC 2021-09 2021-09-07 /pmc/articles/PMC8450899/ /pubmed/34552315 http://dx.doi.org/10.1063/5.0061847 Text en © 2021 Author(s). Published under an exclusive license by AIP Publishing. https://creativecommons.org/licenses/by/4.0/All article content, except where otherwise noted, is licensed under a Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) ). |
spellingShingle | ARTICLES Yu, Boyang Chen, Jian Chen, Daner Chen, Rouxi Wang, Yuenan Tang, Xiujuan Wang, Hsing-Lin Wang, Lian-Ping Deng, Weiwei Visualization of the interaction of water aerosol and nanofiber mesh |
title | Visualization of the interaction of water aerosol and nanofiber mesh |
title_full | Visualization of the interaction of water aerosol and nanofiber mesh |
title_fullStr | Visualization of the interaction of water aerosol and nanofiber mesh |
title_full_unstemmed | Visualization of the interaction of water aerosol and nanofiber mesh |
title_short | Visualization of the interaction of water aerosol and nanofiber mesh |
title_sort | visualization of the interaction of water aerosol and nanofiber mesh |
topic | ARTICLES |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8450899/ https://www.ncbi.nlm.nih.gov/pubmed/34552315 http://dx.doi.org/10.1063/5.0061847 |
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