Raws li kev tshawb fawb tshiab luam tawm hauv "Applied Materials Today", Ib yam khoom tshiab ua los ntawm cov nanofibres me me tuaj yeem hloov cov tshuaj lom neeg uas siv rau hauv cov ntaub so ntswg thiab cov khoom siv tu cev niaj hnub no.
Cov neeg sau ntawv, los ntawm Indian Institute of Technology, hais tias lawv cov khoom siv tshiab muaj kev cuam tshuam tsawg dua rau ib puag ncig thiab muaj kev nyab xeeb dua li qhov tib neeg siv niaj hnub no.
Tau ob peb xyoos dhau los no, cov ntaub so quav pov tseg, cov ntaub so ntswg thiab lwm yam khoom siv huv tau siv cov resins uas nqus tau (SAPs) ua cov khoom nqus. Cov tshuaj no tuaj yeem nqus tau ntau zaus lawv qhov hnyav hauv cov kua; Cov ntaub so quav nruab nrab tuaj yeem nqus tau 30 npaug nws qhov hnyav hauv cov kua dej hauv lub cev. Tab sis cov khoom siv tsis lwj: nyob rau hauv cov xwm txheej zoo tagnrho, cov ntaub so quav tuaj yeem siv sijhawm txog 500 xyoo kom lwj. SAPs kuj tseem tuaj yeem ua rau muaj teeb meem kev noj qab haus huv xws li kev mob hnyav, thiab lawv tau raug txwv tsis pub siv cov ntaub so quav hauv xyoo 1980.
Ib yam khoom tshiab ua los ntawm electrospun cellulose acetate nanofibers tsis muaj qhov tsis zoo no. Hauv lawv txoj kev tshawb fawb, pab pawg tshawb fawb tau tshuaj xyuas cov khoom siv, uas lawv ntseeg tias tuaj yeem hloov SAPs uas tam sim no siv rau hauv cov khoom siv tu cev poj niam.
"Nws yog ib qho tseem ceeb uas yuav tsum tsim cov kev xaiv uas muaj kev nyab xeeb rau cov khoom lag luam, uas tuaj yeem ua rau muaj kev mob hnyav thiab lwm yam tsos mob," Dr. Chandra Sharma, tus sau ntawv sib tham. Peb xav kom tshem tawm cov tshuaj lom uas siv rau hauv cov khoom lag luam tam sim no thiab cov resins uas tsis lwj thiab tsis lwj vim tsis hloov pauv kev ua haujlwm ntawm cov khoom lossis txhim kho nws cov dej nqus thiab kev nplij siab.
Cov nanofibers yog cov fibers ntev thiab nyias uas tsim los ntawm electrospinning. Vim lawv thaj chaw loj, cov kws tshawb fawb ntseeg tias lawv nqus tau dej ntau dua li cov khoom siv uas twb muaj lawm. Cov khoom siv hauv cov tampons muaj muag hauv khw yog ua los ntawm cov fibers tiaj tus, banded li 30 microns tom qab. Nanofibers, los ntawm kev sib piv, yog 150 nanometers tuab, 200 npaug nyias dua li cov khoom siv tam sim no. Cov khoom siv no xis nyob dua li cov uas siv hauv cov khoom uas twb muaj lawm thiab tawm cov khoom seem tsawg dua tom qab siv.
Cov khoom siv nanofiber kuj tseem muaj qhov ntxeem tau (ntau dua 90%) piv rau cov khoom siv ib txwm muaj (80%), yog li nws nqus tau ntau dua. Ib qho ntxiv tuaj yeem ua tau: siv cov kev kuaj zis saline thiab cov zis hluavtaws, cov ntaub ntawv electrostatic textile fibers nqus tau ntau dua li cov khoom lag luam. Lawv kuj tau sim ob hom khoom siv nanofibre nrog SAPs, thiab cov txiaj ntsig tau qhia tias cov nanofibre ib leeg ua haujlwm zoo dua.
"Peb cov txiaj ntsig qhia tau tias cov ntaub electrostatic textile nanofibers ua tau zoo dua li cov khoom siv huv uas muaj nyob hauv khw hauv kev nqus dej thiab xis nyob, thiab peb ntseeg tias lawv yog cov neeg sib tw zoo los hloov cov tshuaj lom neeg uas siv tam sim no," Dr. Sharma hais. "Peb vam tias yuav muaj kev cuam tshuam zoo rau tib neeg kev noj qab haus huv thiab ib puag ncig los ntawm kev siv thiab pov tseg cov khoom siv huv kom muaj kev nyab xeeb dua."
Lub sijhawm tshaj tawm: Lub Peb Hlis-08-2023
