Izazinzulu ezivela eJamani naseNetherlands zenza uphando ngezixhobo ezintsha ezinobuhlobo nokusingqongileyoI-PLAizixhobo. Injongo kukuphuhlisa izixhobo ezihlala ixesha elide zokusetyenziswa kwezibane ezifana neemoto, iilensi, iiplastiki ezikhanyayo okanye izikhokelo zokukhanya. Okwangoku, ezi mveliso ngokubanzi zenziwe nge-polycarbonate okanye i-PMMA.
Izazinzulu zifuna ukufumana iplastiki esekwe kwibhayoloji yokwenza izibane zemoto. Kuye kwavela ukuba i-polylactic acid yinto efanelekileyo.
Ngale ndlela, izazinzulu zisombulule iingxaki ezininzi ezijongene neeplastiki zemveli: okokuqala, ukujika ingqalelo yazo kwizixhobo ezivuselelekayo kunokunciphisa ngempumelelo uxinzelelo olubangelwa yioyile ekrwada kwishishini leplastiki; okwesibini, kunokunciphisa ukukhutshwa kwekhabhoni diokside; okwesithathu, oku kubandakanya ukuqwalaselwa komjikelo wobomi bezinto.
“I-polylactic acid ayipheleli nje ekubeni neengenelo ngokubhekiselele ekuzinzeni, ikwanazo neepropati ezintle kakhulu zokukhanya kwaye ingasetyenziswa kwi-spectrum ebonakalayo yamaza e-electromagnetic,” utshilo uGqr. Klaus Huber, uprofesa kwiYunivesithi yasePaderborn eJamani.
Okwangoku, enye yeengxaki izazinzulu eziyoyisayo kukusetyenziswa kwe-polylactic acid kwiindawo ezinxulumene ne-LED. I-LED yaziwa njengomthombo wokukhanya osebenzayo nonobuhlobo nokusingqongileyo. “Ngokukodwa, ubomi obude kakhulu benkonzo kunye nemitha ebonakalayo, njengokukhanya okuluhlaza okwesibhakabhaka kwezibane ze-LED, kubeka iimfuno eziphezulu kwizixhobo ze-optical,” ucacisa uHuber. Yingakho kufuneka kusetyenziswe izixhobo ezihlala ixesha elide kakhulu. Ingxaki yile: I-PLA iba thambile malunga nama-60 degrees. Nangona kunjalo, izibane ze-LED zinokufikelela kumaqondo obushushu aphezulu ukuya kuma-80 degrees ngelixa zisebenza.
Enye ingxaki enzima kukwenza i-crystallization ye-polylactic acid. I-polylactic acid yenza ii-crystallites kumaqondo obushushu amalunga nama-60 degrees, nto leyo eyenza izinto zibe mnyama. Izazinzulu zazifuna ukufumana indlela yokuphepha oku kwenza i-crystallization; okanye ukwenza inkqubo yokwenza i-crystallization ilawuleke ngakumbi - ukuze ubungakanani bee-crystallites ezenziweyo bungachaphazeli ukukhanya.
Kwilebhu yasePaderborn, izazinzulu ziqale zafumanisa iipropati zeemolekyuli ze-polylactic acid ukuze zitshintshe iipropati zezinto, ngakumbi imeko yazo yokunyibilika kunye ne-crystallization. UHuber unoxanduva lokuphanda umlinganiselo apho izongezo, okanye amandla emitha, zinokuphucula iipropati zezinto. “Sakha inkqubo yokusasaza ukukhanya okune-engile encinci ngokukodwa ukuze sifunde ukwakheka kwekristale okanye iinkqubo zokunyibilika, iinkqubo ezinempembelelo enkulu kumsebenzi wokukhanya,” utshilo uHuber.
Ukongeza kulwazi lwesayensi nobuchwepheshe, le projekthi ingazisa iingenelo ezinkulu kwezoqoqosho emva kokuphunyezwa kwayo. Iqela lilindele ukunikezela ngephepha lalo lokuqala leempendulo ekupheleni kuka-2022.
Ixesha lokuthumela: Novemba-09-2022