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2020-7-1 · Cui says a two-layer tight-weave cotton mask alone can filter out about 35% of small particles. But adding a filter made out of two layers of charged polypropylene could boost that filtration ...

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2020-9-4 · Scientific Achievement Filtration efficiency for fabrics used in cloth masks as a function of aerosol particle size was determined. The highest performers were hybrid fabrics with high thread-count cotton and electrostatic layers such as silk or polyester chiffon. Significance and Impact The study provided mask fabric selection guidelines based on systematic, scientific data.

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2020-8-25 · The emergence of a pandemic affecting the respiratory system can result in a significant demand for face masks. This includes the use of cloth masks by large sections of the public, as can be seen during the current global spread of COVID-19. However, there is limited knowledge available on the performance of various commonly available fabrics used in cloth masks. Importantly, there is a need ...

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