Ososayensi baseJalimane naseNetherlands bacwaninga ngemikhiqizo emisha enobungani nemveloI-PLAizinto zokwakha. Inhloso ukuthuthukisa izinto zokwakha ezihlala isikhathi eside zezinhlelo zokusebenza ezibonakalayo njengezibani zezimoto, amalensi, amapulasitiki akhanyayo noma iziqondiso zokukhanya. Okwamanje, le mikhiqizo ngokuvamile yenziwe nge-polycarbonate noma i-PMMA.
Ososayensi bafuna ukuthola ipulasitiki esuselwe ku-bio yokwenza izibani zemoto. Kuvela ukuthi i-polylactic acid iyinto efanelekile.
Ngale ndlela, ososayensi baxazulule izinkinga eziningana ezibhekene nepulasitiki yendabuko: okokuqala, ukunaka kwabo ezinsizeni ezivuselelekayo kunganciphisa ngempumelelo ingcindezi ebangelwa uwoyela ongahluziwe embonini yepulasitiki; okwesibili, kunganciphisa ukukhishwa kwe-carbon dioxide; okwesithathu, lokhu kuhilela ukucabangela umjikelezo wokuphila wezinto ezibonakalayo.
“Akugcini nje ngokuba i-polylactic acid inezinzuzo maqondana nokusimama, futhi inezakhiwo ezinhle kakhulu zokukhanya futhi ingasetshenziswa kububanzi obubonakalayo bamagagasi kagesi,” kusho uDkt. Klaus Huber, uprofesa eNyuvesi yasePaderborn eJalimane.
Njengamanje, enye yezinkinga ososayensi abanqobayo ukusetshenziswa kwe-polylactic acid emikhakheni ehlobene ne-LED. I-LED yaziwa njengomthombo wokukhanya osebenza kahle futhi onobungane nemvelo. “Ikakhulukazi, impilo yesevisi ende kakhulu kanye nemisebe ebonakalayo, njengokukhanya okuluhlaza okwesibhakabhaka kwezibani ze-LED, kubeka izidingo eziphezulu ezintweni ezibonakalayo,” kuchaza uHuber. Yingakho izinto ezihlala isikhathi eside kakhulu kumele zisetshenziswe. Inkinga iwukuthi: I-PLA iba thambile cishe kuma-degrees angu-60. Kodwa-ke, izibani ze-LED zingafinyelela amazinga okushisa aphezulu afinyelela kuma-degrees angu-80 ngenkathi zisebenza.
Enye inkinga eyinselele ukwakheka kwe-polylactic acid. I-polylactic acid yakha ama-crystallites cishe kuma-degrees angu-60, okwenza izinto zibe mnyama. Ososayensi babefuna ukuthola indlela yokugwema lokhu kwakheka kwe-crystallization; noma ukwenza inqubo yokwakheka kwe-crystallization ilawuleke kakhudlwana - ukuze ubukhulu bama-crystallites akhiwe bungathinti ukukhanya.
Elabhorethri yasePaderborn, ososayensi baqale bathola izakhiwo zama-molecule ze-polylactic acid ukuze bashintshe izakhiwo zezinto, ikakhulukazi isimo sazo sokuncibilika kanye nokwakheka kwekristalu. UHuber unesibopho sokuphenya ngezinga izithasiselo, noma amandla emisebe, ezingathuthukisa ngalo izakhiwo zezinto. “Sakha uhlelo lokusabalala kokukhanya olune-engela encane ngokukhethekile ukuze sifunde ukwakheka kwekristalu noma izinqubo zokuncibilika, izinqubo ezinomthelela omkhulu ekusebenzeni kokukhanya,” kusho uHuber.
Ngaphezu kolwazi lwesayensi nobuchwepheshe, lo msebenzi ungaletha izinzuzo ezinkulu kwezomnotho ngemva kokuqaliswa. Ithimba lilindele ukuletha iphepha lalo lokuqala lezimpendulo ekupheleni kuka-2022.
Isikhathi sokuthunyelwe: Novemba-09-2022