2020
DOI: 10.1080/02786826.2020.1855321
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Abstract: During a pandemic in which aerosol and droplet transmission is possible, such as the COVID-19 pandemic of 2020, the demand for face masks that meet medical or workplace standards can prevent most individuals from obtaining suitable protection. Cloth masks are widely believed to impede droplet and aerosol transmission, but most are constructed from materials with unknown filtration efficiency, airflow resistance and water resistance. Here we provide data on a range of common fabrics that might be used to constr… Show more

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Cited by 36 publications
(40 citation statements)
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“…at particle bin sizes of 2.0-5.0 µm (where the FE was taken at 2 cm/s and the pressure drop was taken at 6.8 cm/s face velocities). The dashed lines show constant quality factors (Rogak et al 2020;Huang et al 2013). The FE versus pressure drop for other bin sizes is included in ( Figure S1).…”
Section: Figurementioning
confidence: 99%
See 1 more Smart Citation
“…at particle bin sizes of 2.0-5.0 µm (where the FE was taken at 2 cm/s and the pressure drop was taken at 6.8 cm/s face velocities). The dashed lines show constant quality factors (Rogak et al 2020;Huang et al 2013). The FE versus pressure drop for other bin sizes is included in ( Figure S1).…”
Section: Figurementioning
confidence: 99%
“…Prior works on improvised materials found that common fabrics (sweatshirts, t-shirts, towels and scarfs) can block 10-60% percent of particles in the 0.2-1 µm range (Rengasamy et al 2010) and improves to 90% for the larger particle ranges (>1 µm) due to being in the inertial impaction regime (Konda et al 2020). Other studies have since examined various non-fabric filters, including HVAC filters, vacuum bags, paper towel, and sterilization wraps (300-wt) and found filtrations of between <60-87% at 0.3 um, 5-75% at 0.3 um, 36% at 2.75 um and 95% at 2.75 um, respectively (Pei et al 2020;Rogak et al 2020;Davies et al 2013).…”
Section: Introductionmentioning
confidence: 99%
“…Studies about the use of face mask have been widely discussed from the material perspective, which investigates the alternative material that has the ability to capture particles and droplet (filtration efficiency), breathability and comfortability ( Aydin et al, 2020 ; Bagheri et al, 2020 ; Chua et al, 2020 ; Clase et al, 2020 ; Davies et al, 2013 ; Konda et al, 2020 ; Rengasamy et al, 2010 ; Rogak et al, 2020 ; Tcharkhtchi et al, 2021 ; Teesing et al, 2020 ; Wilson et al, 2020 ; Zhao et al, 2020 ), from the perspective of utility ( Howard et al, 2020 ; Lepelletier et al, 2020 ; Phan and Ching, 2020 ; Rubio-Romero et al, 2020 ; Wang et al, 2020 ; Yang et al, 2020 ) and after use impact ( Aragaw, 2020 ; Fadare and Okoffo, 2020 ; Ilyas et al, 2020 ; Vanapalli et al, 2021 ). Although, a lot of studies about face mask have been carried out for several months, the number of studies in material choice, especially those that considered the environmental impacts due to the waste is still limited.…”
Section: Introductionmentioning
confidence: 99%
“…24 Most materials had filtrations of >50% at 2 μm and >75% at 5 μm. Similarly, Rogak et al 25 found that nearly all materials tested removed aerosols >5 μm, though the filtration efficiency of 1-5 μm aerosols for common fabrics varied considerably, with the difference in filtration performance partly explained by material structure.…”
Section: Introductionmentioning
confidence: 86%
“…Previous studies have provided the knowledge on the properties of woven fabrics in relation to the filtration of droplets. 25,28,31,37 In this work, we examine common modifications that may be applied to the fabrics and focus on investigating various non-woven materials that can serve as filters to help guide the construction of 3-layer masks recommended recently by WHO and Government of Canada. The non-woven materials include consumer products such as sew-in interfacing, polypropylene (PP), baby wipe and Swiffer.…”
Section: Materials Characterizationmentioning
confidence: 99%