Onse a World Health Organisation ndi US Centers for Disease Control amazindikira kuti ma aerosols ndiye njira yayikulu yofalitsira kachilombo ka COVID-19. Ma aerosols ndi tinthu ting'onoting'ono tamadzi kapena zinthu zina zomwe zimatha kuyimitsidwa mumlengalenga kwa nthawi yayitali, zing'onozing'ono zokwanira kulowa mkati mwa kupuma.
Anthu amatulutsa mpweya pamene akupuma, kutsokomola, kulankhula, kufuula kapena kuimba. Ma aerosols awa amathanso kukhala ndi kachilomboka ngati ali ndi COVID-19. Kukoka ma aerosol okwanira a coronavirus kumatha kudwalitsa munthu. Pakufuna kuti anthu azivala masks, kukonza mpweya wabwino m'nyumba ndi makina osefera mpweya, kuchepetsa kuwonekera kwa anthu komanso kuchepetsa kuchuluka kwa ma aerosols m'chilengedwe ndizofunikira kwambiri poletsa kufalikira kwa ma aerosols a COVID-19.
Kafukufuku wokhudza ma virus atsopano opatsirana ndi owopsa, ndipo sapezeka kawirikawiri m'ma laboratories omwe ali ndi chitetezo chambiri chambiri. Maphunziro onse mpaka pano okhudza masks kapena kusefera bwino pa nthawi ya mliri agwiritsa ntchito zida zina zomwe zimaganiziridwa kutengera kukula ndi machitidwe a ma aerosol a SARS-CoV-2. Kafukufuku watsopanoyu akuyenda bwino pamenepo, kuyesa mayankho a saline opangidwa ndi aerosolized ndi ma aerosol okhala ndi coronavirus yochokera kubanja lomwelo ndi kachilombo komwe kamayambitsa COVID-19 koma kumangokhudza mbewa.
Yun Shen ndi mnzake wa ku yunivesite ya George Washington Danmeng Shuai anapanga fyuluta ya nanofiber yomwe imatulutsa mphamvu yamagetsi yochuluka kupyolera mu dontho la madzi a polyvinylidene fluoride ku ulusi wopota wa ma nanometer 300 m’mimba mwake—pafupifupi 167 woonda kuposa tsitsi la munthu . Izi zidapanga ma pores ochepera ma micrometer angapo m'mimba mwake, ndikuwathandiza kugwira 99.9 peresenti ya ma aerosols a coronavirus.
Njira yopangira, yomwe imadziwika kuti electrospinning, ndiyotsika mtengo ndipo imatha kugwiritsidwa ntchito kupanga zosefera za nanofiber pazida zodzitetezera komanso makina osefera mpweya. Electrospinning imasiyanso mphamvu ya electrostatic pa nanofibers, yomwe imapangitsa kuti athe kugwira ma aerosols, ndipo porosity yake yapamwamba imapangitsa kuti zikhale zosavuta kupuma pamene mukuvala electrospun nanofiber fyuluta.
"Tekinoloje ya Electrospinning imathandizira kupanga ndi kupanga masks ndi zosefera mpweya," adatero Prof. Yun Shen. "Kugwiritsa ntchito ukadaulo wa electrospinning kupanga mitundu yatsopano ya masks ndi zosefera mpweya kumakhala ndi kusefera kwabwino, kuthekera kwachuma komanso scalability. Kutha kukwaniritsa kufunikira kwa masks ndi zosefera mpweya m'munda ndikulonjeza kwambiri."
Nthawi yotumiza: Nov-01-2022
