Covid-19 face masks: A potential source of microplastic fibers in the environment

Covid-19 face masks: A potential source of microplastic fibers in the environment

Disposable face masks (single use face masks) are produced from polymers such as polypropylene, polyurethane, polyacrylonitrile, polystyrene, polycarbonate, polyethylene, or polyester. They consist of three layers; an inner layer (soft fibers), middle layer (melt-blown filter), and an outer layer (nonwoven fibers, which are water-resistant and usually colored). The melt-blown filter is the main filtering layer of the mask produced by the conventional fabrication of micro- and nanofibers, where melted polymer is extruded through tiny nozzles, with high speed blowing gas

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www.ncbi.nlm.nih.gov

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