Ukusasazwa kwamasuntswana epolymer kwisigaba solwelo (latexes) kunezicelo ezininzi ezibalulekileyo kwitekhnoloji yokwaleka, umfanekiso wezonyango, kunye nebhayoloji yeseli.Iqela laseFransi labaphandi ngoku liye laphuhlisa indlela, echazwe kwiphephancwadiAngewandte Chemie International Edition, ukuvelisa ii-polystyrene dispersions ezizinzile kunye nobukhulu obungakaze bube bukhulu kunye nobukhulu obufanayo.Ukuhanjiswa kobungakanani obumxinwa kubalulekile kwiitekhnoloji ezininzi eziphambili, kodwa ngaphambili bekunzima ukuvelisa ifotochemically.
I-Polystyrene, ehlala isetyenziselwa ukudala i-foam eyandisiweyo, iphinde ifaneleke kakuhle ukuveliswa kwe-latexes, apho iincinci ezincinci ze-polystyrene ezincinci zinqunyanyiswa.Zisetyenziselwa ukwenza i-coatings kunye neepeyinti kwaye zisetyenziselwa iinjongo zokulinganisa kwi-microscopy kunye nakwi.umfanekiso wezonyangokunye nophando lwebhayoloji yeeseli.Ngokuqhelekileyo ziveliswa nge-thermal okanye i-redox-inducedi-polymerizationngaphakathi kwisisombululo.
Ukufumana ulawulo lwangaphandle kwinkqubo, amaqela uMuriel Lansalot, u-Emmanuel Lacôte, kunye no-Elodie Bourgeat-Lami e-Université Lyon 1, eFransi, kunye nabalingane, bajike kwiinkqubo eziqhutywa ukukhanya."I-polymerization eqhutywa ngokukhanya iqinisekisa ulawulo lwexeshana, kuba i-polymerization iqhubeka kuphela kubukho bokukhanya, kanti iindlela ze-thermal zingaqaliswa kodwa zingayeki xa ziqhubeka," kusho uLacôte.
Nangona i-UV- okanye i-blue-light-based photopolymerization systems zisekiwe, zinemida.Imitha yobude obufutshane busasazeke xa iubungakanani besuntswanaiba kufutshane nobude bemitha yemitha, yenze iilateksi ezinobungakanani bamasuntswana amakhulu kunobude obungenayo kube nzima ukuvelisa.Ukongeza, ukukhanya kwe-UV kunamandla kakhulu, singasathethi ke kuyingozi ebantwini abasebenza nako.
Ngoko ke abaphandi baqulunqa inkqubo yokuqaliswa kweekhemikhali ezichanekileyo eziphendula ukukhanya okuqhelekileyo kwe-LED kwibala elibonakalayo.Le nkqubo ye-polymerization, esekelwe kwidayi ye-acridine, i-stabilizers, kunye nekhompawundi ye-borane, yayiyeyokuqala ukunqoba i-"300-nanometer yesilingi," umda wesayizi we-UV kunye ne-blue-light-driven polymerization kwi-dispersed medium.Ngenxa yoko, ngokokuqala ngqa, iqela lakwazi ukusebenzisa ukukhanya ukuvelisa i-polystyrene latexes kunye nobukhulu be-particle ubukhulu kune-micrometer enye kunye nobukhulu obufanayo.
Iqela licebisa izicelo ngaphayapolystyrene."Le nkqubo inokuthi isetyenziswe kuzo zonke iindawo apho kusetyenziswa i-latexes, njengeefilimu, iingubo, iinkxaso zokuxilonga, kunye nokunye," kusho uLacôte.Ukongezelela, iinqununu ze-polymer zinokuguqulwa kunyeiidayi zefluorescent, izihloko zemagnethi, okanye ezinye izinto eziluncedo kuxilongo nokwenziwa kwemifanekiso.Iqela lithi uluhlu olubanzi lweesayizi zamasuntswana ezithatha i-nano kunye nezikali ezincinci ziya kufikeleleka “ngokulungisa iimeko zokuqala.
Ixesha lokuposa: Oct-26-2023