Ukuphila kugcwele izinto ezipakishwayo ezicwebezelayo, amabhodlela ezimonyo, izitsha zezithelo nokunye, kodwa eziningi zazo zenziwe ngezinto ezinobuthi nezingalawuleki ezifaka isandla ekungcoleni kwepulasitiki.
Muva nje, abacwaningi eNyuvesi yaseCambridge e-UK bathole indlela yokudala i-glitter eqhubekayo, engeyona enobuthi ne-biodegradable kusuka ku-cellulose, isakhiwo esiyinhloko sezindonga zamaseli zezitshalo, izithelo nemifino. Amaphepha ahlobene ashicilelwe kumagazini we-Nature Materials ngomhla ka-11.
Yenziwe ngama-nanocrystals e-cellulose, le glitter isebenzisa umbala wesakhiwo ukuze iguqule ukukhanya ukuze ikhiqize imibala egqamile. Ngokwemvelo, isibonelo, ukukhanya kwamaphiko ovemvane nezimpaphe zepikoko kuwubuciko bombala wesakhiwo, ongeke uphele ngemva kwekhulu leminyaka.
Ngokusebenzisa amasu okuzihlanganisa, i-cellulose ingakhiqiza amafilimu anemibala egqamile, kusho abacwaningi. Ngokulungiselela isisombululo se-cellulose kanye nemingcele yokumboza, ithimba locwaningo lakwazi ukulawula ngokugcwele inqubo yokuzihlanganisa, okuvumela okokusebenza ukuthi kukhiqizwe ngobuningi emiqulu. Inqubo yabo iyahambisana nemishini ekhona yezimboni. Ngokusebenzisa izinto ezithengiswayo ze-cellulosic, kuthatha izinyathelo ezimbalwa kuphela ukuguqula ukumiswa okuqukethe lokhu kucwebezela.
Ngemva kokukhiqiza amafilimu e-cellulose ngezinga elikhulu, abacwaningi bawagaya aba yizinhlayiya ezinosayizi wazo ezisetshenziselwa ukwenza i-glitter noma umphumela wombala. Ama-pellets ayakwazi ukubola, awanayo ipulasitiki, futhi ayinabo ubuthi. Ngaphezu kwalokho, le nqubo idinga amandla amancane kakhulu kunezindlela ezijwayelekile.
Izinto zabo zingase zisetshenziswe esikhundleni sezinhlayiya zepulasitiki ezibenyezelayo nezinemibala yamaminerali emincane esetshenziswa kakhulu ezimonyoni. Izingulube zendabuko, njengezimpushana ezibenyezelayo ezisetshenziswa nsuku zonke, ziyizinto ezingalawuleki futhi zingcolisa umhlabathi nolwandle. Ngokuvamile, amaminerali e-pigment kufanele ashiswe ezingeni lokushisa eliphezulu lika-800 ° C ukuze enze izinhlayiya ze-pigment, nazo ezingahambisani nendawo yemvelo.
Ifilimu ye-cellulose nanocrystal elungiselelwe ithimba ingenziwa ngezinga elikhulu ngokusebenzisa inqubo "ye-roll-to-roll", njengephepha elenziwe nge-pulp yokhuni, okwenza le nto ibe yizimboni okokuqala.
EYurophu, imboni yezimonyo isebenzisa amathani angaba ngu-5,500 ama-microplastics minyaka yonke. Umbhali omkhulu waleli phepha, uSolwazi Silvia Vignolini, ovela ophikweni lweChemistry kaYusuf Hamid eNyuvesi yaseCambridge, uthe bakholwa wukuthi lo mkhiqizo ungaguqula imboni yezimonyo.
Isikhathi sokuthumela: Nov-22-2022