Lub neej yog tag nrho ntawm ci iab ntim, fwj tshuaj pleev ib ce, txiv hmab txiv ntoo lub tais thiab ntau dua, tab sis ntau ntawm lawv yog ua los ntawm cov khoom siv tshuaj lom thiab tsis muaj zog uas ua rau muaj kuab paug yas.
Tsis ntev los no, cov kws tshawb fawb ntawm University of Cambridge hauv UK tau pom ib txoj hauv kev los tsim kom muaj kev ruaj ntseg, tsis muaj tshuaj lom thiab biodegradable glitter los ntawm cellulose, lub tsev tseem ceeb ntawm phab ntsa ntawm tes ntawm cov nroj tsuag, txiv hmab txiv ntoo thiab zaub. Cov ntaub ntawv cuam tshuam tau luam tawm nyob rau hauv phau ntawv journal Nature Materials hnub tim 11.
Ua los ntawm cellulose nanocrystals, qhov glitter no siv cov xim xim los hloov lub teeb los tsim cov xim vibrant. Nyob rau hauv qhov xwm txheej, piv txwv li, lub flashes ntawm npauj npaim tis thiab peacock feathers yog masterpieces ntawm cov qauv xim, uas yuav tsis ploj tom qab ib puas xyoo.
Siv cov txheej txheem sib dhos tus kheej, cellulose tuaj yeem tsim cov yeeb yaj kiab ci ntsa iab, cov kws tshawb fawb hais tias. Los ntawm kev ua kom zoo ntawm cov tshuaj cellulose thiab txheej txheej, pab pawg tshawb fawb tau muaj peev xwm tswj hwm tus kheej ntawm cov txheej txheem sib dhos, tso cai rau cov khoom tsim tawm hauv cov yob. Lawv cov txheej txheem yog sib xws nrog cov uas twb muaj lawm industrial-scale machines. Siv cov khoom lag luam muaj cellulosic, nws tsuas yog siv ob peb kauj ruam los hloov mus rau qhov kev ncua uas muaj qhov ci ntsa iab.
Tom qab tsim cov yeeb yaj kiab cellulose rau ntawm qhov loj, cov kws tshawb fawb tau muab lawv tso rau hauv cov khoom me me uas siv los ua glitter lossis cov xim pigments. Cov pellets yog biodegradable, yas-dawb, thiab tsis muaj tshuaj lom. Tsis tas li ntawd, cov txheej txheem yog tsawg zog-intensive ntau dua li cov txheej txheem.
Lawv cov khoom siv tuaj yeem siv los hloov cov yas glitter thiab cov pob zeb me me uas siv dav hauv cov tshuaj pleev ib ce. Cov tshuaj pleev xim ib txwm siv, xws li cov hmoov glitter siv hauv txhua hnub, yog cov khoom siv tsis ruaj khov thiab ua paug rau cov av thiab dej hiav txwv. Feem ntau, pigment minerals yuav tsum tau rhuab ntawm qhov kub ntawm 800 ° C los tsim pigment particles, uas yog tsis conducive rau tej yam ntuj tso ib puag ncig.
Lub cellulose nanocrystal zaj duab xis npaj los ntawm pab neeg yuav tsim nyob rau hauv ib tug loj scale siv ib tug "yob-rau-yob" txheej txheem, ib yam li cov ntawv yog tsim los ntawm cov ntoo pulp, ua cov khoom siv no thawj zaug.
Hauv Tebchaws Europe, kev lag luam tshuaj pleev ib ce siv li 5,500 tons ntawm microplastics txhua xyoo. Tus kws sau ntawv laus ntawm daim ntawv, xibfwb Silvia Vignolini, los ntawm Yusuf Hamid Department of Chemistry ntawm University of Cambridge, tau hais tias lawv ntseeg tias cov khoom tuaj yeem hloov pauv kev lag luam tshuaj pleev ib ce.
Post lub sij hawm: Nov-22-2022