A nanofiber Murray membrane with antibacterial properties for high efficiency oily particulate filtration
European Polymer Journal
; 191, 2023.
Article
Dans Anglais
| Scopus | ID: covidwho-2298811
ABSTRACT
Particulate air pollution represented by PM2.5 is one of the biggest environmental challenges in the 21st century. Especially in 2020, the global outbreak of COVID-19 has brought new challenges to melt-blown filter materials, such as the attenuation of filtration efficiency with breathing, even no filtration effect for viruses as their smaller diameter, the sharp decline of filter efficiency after oily filtration cycle, and its limit in some explosive occasions. Here, using the diameter difference of polystyrene (PS), polyvinylidene fluoride (PVDF) and nylon 6(PA6) fibers, we report a multistage structure nanofiber membrane (PS/PVDF/PA6&Ag MSNMs) with high efficiency, low resistance and antibacterial effect by constructing gradient pore structure and introducing silver nanoparticles (Ag NPs), overcoming the above defects. The average filtration efficiency of PS/PVDF/PA6&Ag MSNMs for diisooctyl sebacate (DEHS) monodisperse particles from 0.2 μm to 4.9 μm was 99.88%, and the pressure drop was only 128 Pa. After repeated circulation for 100 times, the filtration efficiency and pressure drop remained stable. Above all, the antibacterial nanofiber membrane with high efficiency and low resistance has been preliminarily constructed, the future research will further focus on the performance after circulation. © 2023 Elsevier Ltd
Antibacterial; Electrospinning nanofibers; Multi-stage structure; Murray's law; Oily aerosol; Air filters; Drops; Efficiency; Fluorine compounds; Microfiltration; Particles (particulate matter); Pore structure; Pressure drop; Silver nanoparticles; Viruses; Antibacterials; Electrospinning nanofiber; Filtration efficiency; Higher efficiency; Multi-stages; Murray law; Polyvinylidene fluorides; Stage structure; Nanofibers
Texte intégral:
Disponible
Collection:
Bases de données des oragnisations internationales
Base de données:
Scopus
langue:
Anglais
Revue:
European Polymer Journal
Année:
2023
Type de document:
Article
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