What to Wear: The Filtration Performance of Alternative Materials Used to Construct Do-It-Yourself Masks

نویسندگان

چکیده

The COVID-19 pandemic has shown that much of the world, including United States, is ill-prepared for material demands a global crisis. In response to this shortage Personal Protective Equipment (PPE), we have conducted filtration efficiency and pressure drop testing range common materials used constructing do-it-yourself masks, an allergen filter, vacuum bag, heavy-duty tool wipe, standard cotton bandana, as well 3-ply surgical mask, medical drape industrially available composite filter material. Size-resolved percent penetration each by particles with diameters ranging from 25 500 nm was measured at three face velocities (0.72 cm s-1, 4.30 13.0 s-1). performed best, only allowing 5% ± 3% 300 through velocity comparable human breathing during heavy physical work. comparison, mask bandana allowed 39 1% 51% pass same velocity, respectively. According calculated quality, best choices construction are industrial bag. Structure morphology were characterized scanning electron microscopy (SEM), image analysis, thickness measurements investigate characteristics which improve filtration. This study shows certain household commercially combinations can be in highly effective masks.

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ژورنال

عنوان ژورنال: Aerosol and Air Quality Research

سال: 2021

ISSN: ['2071-1409', '1680-8584']

DOI: https://doi.org/10.4209/aaqr.200633