Ngokusho kocwaningo olusha olushicilelwe ku-"Applied Materials Today", Izinto ezintsha ezenziwe ngama-nanofibre amancane zingathatha indawo yezinto ezingaba yingozi ezisetshenziswa kuma-napkin kanye nemikhiqizo yokuhlanzeka namuhla.
Abalobi baleli phepha, abavela e-Indian Institute of Technology, bathi izinto zabo ezintsha azinawo umthelela omkhulu emvelweni futhi ziphephile kunalokho abantu abakusebenzisayo namuhla.
Emashumini ambalwa eminyaka edlule, amanabukeni alahlwayo, ama-tampon kanye neminye imikhiqizo yezempilo iye yasebenzisa ama-resin akhiphayo (ama-SAP) njengezifutho. Lezi zinto zingamunca isisindo sazo izikhathi eziningana oketshezini; Inabukeni elijwayelekile lingamunca isisindo salo izikhathi ezingu-30 oketshezini lomzimba. Kodwa izinto aziboli: ngaphansi kwezimo ezinhle, inabukeni lingathatha iminyaka efinyelela ku-500 ukuba libole. Ama-SAP angabangela nezinkinga zempilo njenge-toxic shock syndrome, futhi ayevinjelwe kuma-tampon ngawo-1980.
Izinto ezintsha ezenziwe ngama-electrospun cellulose acetate nanofibers azinazo lezi zingqinamba. Ocwaningweni lwazo, ithimba locwaningo lihlaziye izinto, elikholelwa ukuthi zingathatha indawo yama-SAP asetshenziswa njengamanje emikhiqizweni yokuhlanzeka kwabesifazane.
"Kubalulekile ukuthuthukisa ezinye izindlela eziphephile kunemikhiqizo etholakala kwezentengiselwano, okungabangela i-toxic shock syndrome kanye nezinye izimpawu," kusho uDkt. Chandra Sharma, umbhali ohambisanayo waleli phepha. Siphakamisa ukuthi kuqedwe izinto eziyingozi ezisetshenziswa emikhiqizweni etholakala kwezentengiselwano yamanje kanye nama-resin angenawo ama-biobolible superabsorbent ngokusekelwe ekungashintshi ukusebenza komkhiqizo noma ngisho nokuthuthukisa ukumuncwa kwamanzi kanye nenduduzo yawo.
Ama-nanofiber ayimicu emide nencane ekhiqizwa yi-electrospinning. Ngenxa yendawo yawo enkulu ebusweni, abacwaningi bakholelwa ukuthi amunca kakhulu kunezinto ezikhona. Izinto ezisetshenziswa kuma-tampon atholakala kwezentengiselwano zenziwe ngemicu eyisicaba, eboshwe ngama-microns angaba ngu-30 ngemuva. Ama-nanofiber, ngokuphambene, anobukhulu obungama-nanometer angu-150, amancane ngokuphindwe ka-200 kunezinto zamanje. Izinto zikhululekile kakhulu kunezo ezisetshenziswa emikhiqizweni ekhona futhi zishiya insalela encane ngemva kokusetshenziswa.
Izinto ze-nanofiber nazo zinomgodi (ngaphezu kuka-90%) uma kuqhathaniswa nezivamile (80%), ngakho-ke zimunca kakhulu. Kungashiwo elinye iphuzu: kusetshenziswa ukuhlolwa komchamo kasawoti kanye nokwenziwe, imicu yendwangu e-electrostatic imunca kakhulu kunemikhiqizo etholakala kwezentengiselwano. Baphinde bahlola izinhlobo ezimbili zezinto ze-nanofiber ezine-SAPs, futhi imiphumela ibonise ukuthi i-nanofiber yodwa isebenze kangcono.
"Imiphumela yethu ikhombisa ukuthi ama-nanofiber endwangu asebenza ngogesi asebenza kangcono kunemikhiqizo yenhlanzeko etholakala kwezentengiselwano maqondana nokumuncwa kwamanzi kanye nenduduzo, futhi sikholelwa ukuthi ayindlela enhle yokufaka esikhundleni sezinto eziyingozi ezisetshenziswayo njengamanje," kusho uDkt. Sharma. "Sithemba ukuthi kuzoba nomthelela omuhle empilweni yabantu kanye nemvelo ngokusebenzisa nokulahla imikhiqizo yenhlanzeko ngokuphephile.
Isikhathi sokuthunyelwe: Mashi-08-2023
