Polarity-Dominated Stable N97 Respirators for Airborne Virus Capture Based on Nanofibrous Membranes.
Angew Chem Int Ed Engl
; 60(44): 23756-23762, 2021 10 25.
Artículo
en Inglés
| MEDLINE | ID: covidwho-1375593
ABSTRACT
The longevity and reusability of N95-grade filtering facepiece respirators (N95 FFRs) are limited by consecutive donning and disinfection treatments. Herein, we developed stable N97 nanofibrous respirators based on chemically modified surface to enable remarkable filtration characteristics via polarity driven interaction. This was achieved by a thin-film coated polyacrylonitrile nanofibrous membrane (TFPNM), giving an overall long-lasting filtration performance with high quality factor at 0.42â
Pa-1 (filtration efficiency over 97 %; pressure drop around 10â
Pa), which is higher than that of the commercial N95 FFRs (0.10-0.41â
Pa-1 ) tested with a flow rate of 5â
L min-1 and the 0.26â
µm NaCl aerosol. A coxsackie B4 virus filtration test demonstrated that TFPNM also had strong virus capture capacity of 97.67 %. As compared with N95 FFRs, the TFPNM was more resistant to a wider variety of disinfection protocols, and the overall filtration characteristics remained N97 standard.
Palabras clave
Texto completo:
Disponible
Colección:
Bases de datos internacionales
Base de datos:
MEDLINE
Asunto principal:
Ventiladores Mecánicos
/
Enterovirus Humano B
/
Nanofibras
Idioma:
Inglés
Revista:
Angew Chem Int Ed Engl
Año:
2021
Tipo del documento:
Artículo
Similares
MEDLINE
...
LILACS
LIS