Ngokutsho kophando olutsha olupapashwe kwi-"Applied Materials Today", izinto ezintsha ezenziwe ngee-nanofibres ezincinci zingathatha indawo yezinto ezinokuba yingozi ezisetyenziswa kwiinapile nakwiimveliso zococeko namhlanje.
Ababhali beli phepha, abavela kwi-Indian Institute of Technology, bathi izinto zabo ezintsha azinampembelelo ingako kwindalo esingqongileyo kwaye zikhuselekile kunezo abantu bazisebenzisayo namhlanje.
Kwiminyaka embalwa edlulileyo, ii-diapers ezilahlwayo, ii-tampons kunye nezinye iimveliso zococeko ziye zasebenzisa ii-resin ezifunxayo (SAPs) njengezifunxi. Ezi zinto zinokufunxa ubunzima bazo obuphindwe kaninzi kulwelo; I-diaper eqhelekileyo inokufunxa ubunzima bayo obuphindwe ka-30 kulwelo lomzimba. Kodwa le nto ayiboli: phantsi kweemeko ezifanelekileyo, i-diaper ingathatha ukuya kuthi ga kwiminyaka engama-500 ukuba yonakale. Ii-SAPs zinokubangela iingxaki zempilo ezifana ne-toxic shock syndrome, kwaye zavalwa kwii-tampons ngeminyaka yoo-1980.
Izinto ezintsha ezenziwe nge-electrospun cellulose acetate nanofibers azinazo naziphi na iingxaki. Kuphononongo lwabo, iqela lophando lihlalutye ezi zinto, abakholelwa ukuba zingathatha indawo yee-SAP ezisetyenziswa ngoku kwiimveliso zococeko lwabasetyhini.
"Kubalulekile ukuphuhlisa ezinye iindlela ezikhuselekileyo kwiimveliso ezithengiswayo, ezinokubangela i-toxic shock syndrome kunye nezinye iimpawu," utshilo uGqr. Chandra Sharma, umbhali ohambelanayo wephepha. Sicebisa ukuba kususwe izinto eziyingozi ezisetyenziswa kwiimveliso ezikhoyo ngoku ezithengiswayo kunye nee-resin ezingenakubola ngenxa yokungatshintshi ukusebenza kwemveliso okanye nokuphucula ukufunxwa kwayo kwamanzi kunye nentuthuzelo.
Ii-nanofibers zii-fibers ezinde nezincinci eziveliswa yi-electrospinning. Ngenxa yendawo yazo enkulu, abaphandi bakholelwa ukuba zifunxa ngakumbi kunezixhobo ezikhoyo. Izinto ezisetyenziswa kwii-tampon ezithengiswayo zenziwe ngee-fibers ezithe tyaba, ezibotshiweyo malunga ne-30 microns ngasemva. Ii-nanofibers, ngokwahlukileyo, zinobukhulu obuyi-150 nanometers, zincinci ngokuphindwe ka-200 kunezixhobo zangoku. Izinto zikhululekile ngakumbi kunezo zisetyenziswa kwiimveliso ezikhoyo kwaye zishiya intsalela encinci emva kokusetyenziswa.
Izinto ze-nanofiber nazo zineembobo (ngaphezulu kwe-90%) xa kuthelekiswa nezesiqhelo (80%), ngoko ke ziyafunxa ngakumbi. Elinye inqaku linokuthi livezwe: ngokusebenzisa uvavanyo lwe-saline kunye nomchamo owenziweyo, iifayibha zelaphu ezisebenzisa i-electrostatic ziyafunxa ngakumbi kuneemveliso ezithengiswayo. Bakwavavanya iinguqulelo ezimbini zezinto ze-nanofiber ezine-SAPs, kwaye iziphumo zibonise ukuba i-nanofiber yodwa isebenza ngcono.
"Iziphumo zethu zibonisa ukuba ii-nanofibers ze-electrostatic textile zisebenza ngcono kuneemveliso zococeko ezithengiswayo ngokubhekiselele ekufunxeni amanzi kunye nokuthuthuzela, kwaye sikholelwa ukuba zilungele ukuthatha indawo yezinto eziyingozi ezisetyenziswayo ngoku," utshilo uGqr. Sharma. "Sinethemba lokuba ziya kuba nefuthe elihle kwimpilo yabantu nakwindalo esingqongileyo ngokusebenzisa ngokukhuselekileyo kunye nokulahla iimveliso zococeko."
Ixesha lokuthumela: Matshi-08-2023
