Hupenyu huzere nekupenya kurongedza, mabhodhoro ekuzora, mbiya dzemichero uye nezvimwe, asi mazhinji acho akagadzirwa nezvinhu zvine muchetura uye zvisingagoneki zvinokonzeresa kusvibiswa kwepurasitiki.
Munguva pfupi yapfuura, vatsvakurudzi veYunivhesiti yeCambridge muUnited States vakawana nzira yekugadzira inopenya, isina chepfu uye biodegradable glitter kubva ku cellulose, iyo huru yekuvaka yemadziro emadziro emiti, michero nemiriwo.Mapepa ane hukama akabudiswa mujenari Nature Materials musi wa11.
Yakagadzirwa kubva ku cellulose nanocrystals, ichi chinopenya chinoshandisa chimiro chemavara kushandura mwenje kuti ibudise mavara anopenya.Muzvisikwa, semuenzaniso, kupenya kwemapapiro e butterfly neminhenga yepeacock inyanzvi dzemavara ezvimiro, izvo zvisingazoperi mushure mezana ramakore.
Uchishandisa maitiro ekuzvibatanidza, cellulose inogona kugadzira mafirimu ane mavara akajeka, vanoongorora vanodaro.Nekugadzirisa iyo cellulose mhinduro uye coating paramita, timu yekutsvagisa yakakwanisa kudzora zvizere maitiro ekuzvibatanidza, zvichibvumira kuti zvinhu zvibudiswe mumipumburu.Maitiro avo anofambirana nearipo maindasitiri-scale michina.Uchishandisa zvinhu zvinotengeswa zve cellulosic, zvinotora nhanho shoma chete kuchinjisa kune kuturika ine iyi inopenya.
Mushure mekugadzira mafirimu e-cellulose pamwero mukuru, vatsvakurudzi vakaagaya kuita zvidimbu zvehukuru izvo zvinoshandiswa kugadzira kubwinya kana kuita pigment.Iwo ma pellets anoodza, epurasitiki-asina, uye asina chepfu.Uyezve, maitiro acho haanyanyi kusimba simba pane nzira dzakajairika.
Zvinhu zvavo zvinogona kushandiswa kutsiva mapurasitiki anopenya uye madiki mamineral pigment anoshandiswa zvakanyanya muzvizoro.Mavara echinyakare, akadai sehupfu hunopenya hunoshandiswa mukushandiswa kwemazuva ese, zvinhu zvisingagoneki uye zvinosvibisa ivhu nemakungwa.Kazhinji, zvicherwa zve pigment zvinofanirwa kupiswa pakupisa kwe800 ° C kuti zvigadzire pigment particles, izvo zvakare zvisingaenderane nemamiriro ekunze.
Iyo cellulose nanocrystal firimu inogadzirwa nechikwata inogona kugadzirwa pamwero mukuru uchishandisa "roll-to-roll" maitiro, kungofanana nepepa rinogadzirwa kubva muhuni pulp, ichiita ichi chinhu indasitiri kekutanga.
MuEurope, indasitiri yezvizorwa inoshandisa anenge 5,500 matani emicroplastics gore rega rega.Munyori mukuru webepa, Muzvinafundo Silvia Vignolini, weYusuf Hamid Dhipatimendi reChemistry paYunivhesiti yeCambridge, akati vanotenda kuti chigadzirwa ichi chinogona kushandura indasitiri yezvizoro.
Nguva yekutumira: Nov-22-2022