Abstract
Face masks have globally been accepted as an effective protection tool to prevent viral transmission. However, most face masks are typically absent of antiviral properties. This study firstly used chitosan thermal bonded nonwovens (CS) as a functional layer to endow the face masks to inhibit virus activity. Results showed that the CS could effectively inactivate the Enterovirus 71 (EV71) that can be spread by aerosol and showed good biocompatibility toward human embryonic lung fibroblasts (HELF). Moreover, when CS was used as an additional layer of polypropylene melt-blown nonwovens (PP), the removal efficiencies of PP/CS were 97.95 ± 0.61% for dioctyl sebacate and 96.61 ± 1.73% for NaCl particles. The results suggest that CS may exert antiviral properties as a functional layer in a face mask to provide additional protection and lower the risk of secondary transmission.
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