Ultrafine, self-crimp, and electret nano-wool for low-resistance and high-efficiency protective filter media against PM_0.3.

ABSTRACT: Frequent outbreaks of emerging infectious diseases (EIDs) make personal protective filter media in high demand. Electrospun nanofibrous materials are proved to be very effective in resisting virus-containing fine particles owing to their small fiber diameters; however, hindered by the intrinsic close-packing character of fine fibers, electrospun filters suffer from a relatively high air resistance, thereby poor breathing comfort. Here, we report a biomimetic and one-step strategy to create ultrafine and curly wool-like nanofibers, named nano-wool, which exhibit fluffy assembly architecture and powerful electret effect. By achieving the online self-crimp and in-situ charging of nanofibers, the curly electret nano-wool shows a small diameter of ~0.6 μm (two orders of magnitude lower than nat

SUBMITTER: Li Y 

PROVIDER: S-EPMC7834036 | biostudies-literature | 2020 Oct

REPOSITORIES: biostudies-literature