Malinga ndi kafukufuku watsopano wofalitsidwa mu 《 Applied Materials Today》, Zipangizo zatsopano zopangidwa kuchokera ku nanofibres zazing'ono zitha kulowa m'malo mwa zinthu zomwe zingakhale zovulaza zomwe zimagwiritsidwa ntchito mu matewera ndi zinthu zaukhondo masiku ano.
Olemba a pepalali, ochokera ku Indian Institute of Technology, akuti zinthu zawo zatsopano sizikhudza chilengedwe kwenikweni ndipo ndi zotetezeka kuposa zomwe anthu amagwiritsa ntchito masiku ano.
Kwa zaka makumi angapo zapitazi, matewera otayidwa, ma tamponi ndi zinthu zina zaukhondo zakhala zikugwiritsa ntchito ma resins onyowa (SAPs) ngati zonyowa. Zinthuzi zimatha kuyamwa kulemera kwawo kangapo mumadzimadzi; Matewera wamba amatha kuyamwa kulemera kwake kuwirikiza 30 mumadzimadzi amthupi. Koma zinthuzo sizimawonongeka: pansi pa mikhalidwe yabwino, thewera lingatenge zaka 500 kuti liwonongeke. Ma SAP angayambitsenso mavuto azaumoyo monga toxic shock syndrome, ndipo adaletsedwa kugwiritsa ntchito ma tamponi m'zaka za m'ma 1980.
Zipangizo zatsopano zopangidwa kuchokera ku electrospun cellulose acetate nanofibers zilibe vuto lililonse mwa izi. Mu kafukufuku wawo, gulu lofufuza linasanthula zinthuzo, zomwe amakhulupirira kuti zitha kulowa m'malo mwa SAPs zomwe zimagwiritsidwa ntchito popanga zinthu zaukhondo za akazi.
"Ndikofunikira kupanga njira zina zotetezeka m'malo mwa zinthu zomwe zikupezeka m'masitolo, zomwe zingayambitse matenda oopsa komanso zizindikiro zina," Dr Chandra Sharma, wolemba nkhaniyo. Tikulangiza kuti tichotse zinthu zovulaza zomwe zimagwiritsidwa ntchito pazinthu zomwe zikupezeka m'masitolo komanso ma resins osabowola omwe amanyowa chifukwa chosasintha magwiridwe antchito azinthu kapena ngakhale kukonza kuyamwa kwa madzi ndi chitonthozo chake.
Ma nanofiber ndi ulusi wautali komanso woonda wopangidwa ndi electrospinning. Chifukwa cha malo awo akuluakulu, ofufuzawo amakhulupirira kuti amayamwa kwambiri kuposa zinthu zomwe zilipo. Zinthu zomwe zimagwiritsidwa ntchito mu ma tampons omwe amapezeka m'masitolo zimapangidwa ndi ulusi wosalala, wolumikizidwa ndi mikanda pafupifupi ma microns 30 kumbuyo. Mosiyana ndi zimenezi, ma nanofiber ndi okhuthala 150 nanometers, opyapyala kuwirikiza 200 kuposa zinthu zomwe zilipo. Zinthuzo zimakhala bwino kuposa zomwe zimagwiritsidwa ntchito pazinthu zomwe zilipo ndipo zimasiya zotsalira zochepa mutagwiritsa ntchito.
Zipangizo za nanofiber nazonso zimakhala ndi mabowo (oposa 90%) poyerekeza ndi zachizolowezi (80%), kotero zimayamwa kwambiri. Mfundo ina ingamveke: pogwiritsa ntchito mayeso a saline ndi mkodzo wopangidwa, ulusi wa nsalu wa electrostatic umayamwa kwambiri kuposa zinthu zomwe zimapezeka m'masitolo. Anayesanso mitundu iwiri ya nanofiber yokhala ndi ma SAP, ndipo zotsatira zake zinasonyeza kuti nanofiber yokha imagwira ntchito bwino.
"Zotsatira zathu zikusonyeza kuti ma nanofiber a nsalu zamagetsi amagwira ntchito bwino kuposa zinthu zaukhondo zomwe zimapezeka m'masitolo pankhani yoyamwa madzi ndi chitonthozo, ndipo tikukhulupirira kuti ndi abwino kusintha zinthu zovulaza zomwe zikugwiritsidwa ntchito panopa," adatero Dr. Sharma. "Tikukhulupirira kuti zidzakhala ndi zotsatira zabwino pa thanzi la anthu komanso chilengedwe pogwiritsa ntchito bwino komanso kutaya zinthu zaukhondo."
Nthawi yotumizira: Mar-08-2023
