I-Cellulose ne-chitin, ama-biopolymers amabili avame kakhulu emhlabeni, atholakala kumagobolondo ezitshalo nama-crustacean (phakathi kwezinye izindawo), ngokulandelana.Ososayensi e-Georgia Institute of Technology manje sebeklame indlela yokuhlanganisa lezi zinto ezimbili ukuze bakhiqize amaphakheji okudla okuvundisiwe afana nezikhwama zepulasitiki.
Liholwa nguProfesa J. Carson Meredith, ithimba labacwaningi lisebenza ngokumisa ama-nanocrystals e-cellulose akhishwe okhunini nama-chitin nanofibers akhishwa kumagobolondo enkalankala emanzini, bese lifafaza ikhambi ku-bioavailable ezingxenyeni ezishintshanayo.Le nto ikhiqizwa ku-polymer substrate esetshenziswe kabusha - inhlanganisela enhle yama-nanocrystals e-cellulose afakwe kabi kanye nama-chitin nanofibers afakwe kahle.
Uma omisiwe futhi ehlutshiwe kusukela ku-substrate, ifilimu esobala ephumela ekubeni inokuguquguquka okuphezulu, amandla kanye nokuvunda.Ngaphezu kwalokho, ingakwazi futhi ukwedlula ukugoqa kwepulasitiki okungavundisi kwendabuko ekugcineni ukudla kungonakali."I-benchmark yethu eyinhloko lapho le nto iqhathaniswa nayo i-PET noma i-polyethylene terephthalate, okungenye yezinto ezivame kakhulu ezisekelwe ku-petroleum ozibona emaphaketheni acacile emishinini yokuthengisa nokunye," kusho uMeredith.“Izinto zethu zikhombisa ukwehla ngamaphesenti angama-67 kokungena komoyampilo uma kuqhathaniswa nezinye izinhlobo ze-PET, okusho ukuthi kungagcina ukudla isikhathi eside.”
Ukuncipha kokungena kwamanzi kungenxa yokuba khona kwama-nanocrystals."Kunzima ukuthi i-molecule yegesi ingene ku-crystal eqinile ngoba kufanele iphazamise isakhiwo se-crystal," kusho uMeredith."Ngakolunye uhlangothi, izinto ezifana ne-PET zinokuqukethwe okuningi kwe-amorphous noma okungeyona i-crystalline, ngakho-ke kunezindlela eziningi zokuthi ama-molecule amancane egesi atholakale kalula."
Ekugcineni, amafilimu asekelwe ku-biopolymer awakwazanga ukufaka kuphela amafilimu epulasitiki okwamanje angawohloki uma elahlwa, kodwa futhi asebenzise imfucumfucu yezinkuni ekhiqizwa ezimbonini namagobolondo enkalankala alahlwe imboni yezilwane zasolwandle.Kuze kube yileso sikhathi, nokho, izindleko zokukhiqiza impahla esikalini sezimboni kufanele zehliswe.
Isikhathi sokuthumela: Aug-29-2022