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There is an increasing demand to develop the filtration efficiency of facemask materials and decrease their airflow resistance. The present work proposes a method of concentrating the electric field in front of the facemask to repel the viruses. This proposal may keep the airflow resistance constant. The present work aims to use the electrostatic charge (ESC) generated from the triboelectrification of the PP layers of the medical facemask to repel the negative charged viruses such as Covid-19 out of the facemask. The effect of the separation of the PP layers by PP and PE nets as well as paper sheet on the magnitude of the ESC generated from the friction of air flowing through the PP filter layers is investigated.
It was found that, the highest negative ESC was presented by PP layers separated by PP net followed by PE net due to the increase of the charged surface area, while the three layers of PP generated relatively lower values. Besides, inserting paper spacer between PP layers generated relatively higher values of ESC. The highest ESC values were observed for PP net inserted after the first internal PP layer followed by the arrangement that contained PP net as the first internal layer. WhenESC increased, the intensity of the electric field increased and consequently the ability of the fibers to repel negative charged fibers increased due to the increase of the electric force. It is advised that electric field outside the fibers should be strong enough to repel viruses and prevent them from passing through the fibers.
DOI
10.21608/jest.2021.206996
Keywords
Facemask, COVID-19, Microfibers, polypropylene, polyethylene net
Authors
MiddleName
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Mechanical Engineering Dept., Faculty of Engineering, Suez Canal University, EGYPT.
Email
eng_ahmed_yossef@hotmail.com
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Department of Automotive engineering and Tractors, Faculty of Engineering, Minia University, El-Minia, EGYPT.
Email
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Department of Production engineering and Mechanical Design, Faculty of Engineering, Minia University, El-Minia, EGYPT.
Email
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-Orcid
-MiddleName
-Affiliation
Department of Production engineering and Mechanical Design, Faculty of Engineering, Minia University, El-Minia, EGYPT.
Email
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https://jest.journals.ekb.eg/article_206996.html
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https://jest.journals.ekb.eg/service?article_code=206996
Publication Title
Journal of the Egyptian Society of Tribology
Publication Link
https://jest.journals.ekb.eg/
MainTitle
ENHANCING THE PERFORMANCE OF THE MEDICAL FACEMASK