Hupenyu hwakazara nekurongedza kunopenya, mabhodhoro ekushongedza, ndiro dzemichero nezvimwewo, asi zvakawanda zvacho zvakagadzirwa nezvinhu zvine chepfu uye zvisingagari kwenguva refu zvinoparira kusvibiswa kwepurasitiki.
Munguva pfupi yapfuura, vaongorori vepaYunivhesiti yeCambridge muUK vakawana nzira yekugadzira glitter inogara kwenguva refu, isina chepfu uye inoora kubva ku cellulose, chivakwa chikuru chemadziro esero emiti, michero nemiriwo. Mapepa ane chekuita neizvi akabudiswa mujenari reNature Materials musi wa11.
Yakagadzirwa kubva ku cellulose nanocrystals, iyi glitter inoshandisa ruvara rwechimiro kuchinja chiedza kuti ibudise mavara akajeka. Semuenzaniso, zvakasikwa, kupenya kwemapapiro emashavishavi neminhenga yepikoko mabasa ehunyanzvi eruvara rwechimiro, ayo asingazoperi mushure mezana remakore.
Vachishandisa nzira dzekuzvigadzira, cellulose inogona kugadzira mafirimu ane mavara akajeka, vanodaro vaongorori. Nekugadzirisa mhinduro ye cellulose uye maparamita ekuputira, timu yekutsvagisa yakakwanisa kudzora zvizere maitiro ekuzvigadzira, zvichiita kuti zvinhu zvigadzirwe muzvikamu zvakawanda. Maitiro avo anoenderana nemichina iripo yeindasitiri. Uchishandisa zvinhu zve cellulosic zvinowanikwa mukutengeserana, zvinotora matanho mashoma chete kuti uchinje kuita suspension ine iyi glitter.
Mushure mekugadzira mafirimu e cellulose akawanda, vaongorori vakaakuya kuita zvidimbu zvakakura izvo zvinoshandiswa kugadzira glitter kana effect pigments. Mapellets acho anogona kuora, haana purasitiki, uye haana chepfu. Uyezve, maitiro acho haadi simba rakawanda kupfuura nzira dzemazuva ese.
Zvinhu zvavo zvinogona kushandiswa kutsiva zvidimbu zvepurasitiki zvinopenya uye zvidimbu zvidiki zvemineral zvinoshandiswa zvakanyanya muzvizoro. Mapigment echinyakare, akadai semapoda anopenya anoshandiswa zuva nezuva, zvinhu zvisingagone kuchengetedzeka uye zvinosvibisa ivhu nemakungwa. Kazhinji, zvicherwa zvine pigment zvinofanirwa kupiswa patembiricha yepamusoro ye800°C kuti zvigadzire zvidimbu zvepigment, izvo zvisingakodzeriwo nharaunda.
Firimu re cellulose nanocrystal rakagadzirwa nechikwata rinogona kugadzirwa zvakanyanya uchishandisa nzira ye "roll-to-roll", sezvinoita bepa rinogadzirwa nemapuranga ehuni, zvichiita kuti chinhu ichi chive cheindasitiri kekutanga.
MuEurope, indasitiri yezvizoro inoshandisa matani angangoita 5,500 epurasitiki gore rega rega. Munyori mukuru wepepa iri, Purofesa Silvia Vignolini, wekuYusuf Hamid Department of Chemistry paYunivhesiti yeCambridge, akati vanotenda kuti chigadzirwa ichi chinogona kuchinja indasitiri yezvizoro.
Nguva yekutumira: Mbudzi-22-2022