Plastiki ndiyo imwe yenzvimbo huru dzekusvibisa pasirese, uye zvinotora mazana emakore kuti zvidzikise zvisikwa. Zvinoenderana nemishumo yenhau dzekunze, vaongorori veYale University's Chikoro cheEvironment uye University yeMaryland vakashandisa huni-zvigadzirwa kugadzira yakasimba uye yakagadzikana bioplastics kugadzirisa rimwe rematambudziko ezvakatipoteredza zvakanyanya pasi rose.

Mubatsiri Muzvinafundo Yuan Yao weYale University's School of Environment uye Muzvinafundo Liangbing Hu weUniversity yeMaryland Center for Materials Innovation nevamwe vakabatsirana pakutsvagisa kuti vagadzirise matrix ane porous mumatanda chaiwo kuita slurry. Vatsvagiri vakati iyo yakagadzirwa biomass plastiki inoratidza yakakwira mechaniki simba uye kugadzikana kana iine zvinwiwa, pamwe neUV kuramba. Inogona zvakare kudzokororwa munzvimbo yechisikigo kana kuti yakachengeteka biodegraded. Zvichienzaniswa nepetroleum-based plastics uye mamwe mapurasitiki anoodegradable, mararamiro ayo kutenderera kwezvakatipoteredza idiki.

Yao akati: "Takagadzira nzira iri nyore uye yakatwasuka yekugadzira iyo inogona kushandisa huni kugadzira bio-based plastiki uye ine yakanaka mechanical properties."

Kuti vagadzire musanganiswa weslurry, vaongorori vakashandisa machipisi ehuni semidziyo yakabikwa uye vakashandisa biodegradable uye inodzokororwa yakadzika eutectic solvent kuti vagadzire iyo yakasununguka porous chimiro muupfu. Mumusanganiswa wakawanikwa, nekuda kwenano-scale entanglement uye hydrogen bonding pakati pe regenerated lignin uye cellulose micro / nano fiber, zvinyorwa zvine zvinyorwa zvakasimba zvakasimba uye viscosity yakakwirira, uye inogona kukandwa nekukungurutswa pasina kuputika.

Vatsvagiri vakabva vaita ongororo yehupenyu hwese kuti vayedze kukanganiswa kwezvakatipoteredza kwebioplastics uye mapurasitiki akajairwa. Zvigumisiro zvakaratidza kuti apo bioplastic sheet yakavigwa muvhu, zvinhu zvakaputsika mushure memavhiki maviri uye zvakasvibiswa zvachose mushure memwedzi mitatu; uyezve, vaongorori vakati iyo bioplastics inogona zvakare kuputswa kuita slurry kuburikidza nemechani inomutsa. Saka, DES inodzoserwa uye inoshandiswa zvakare. Yao akati: "Kunakisa kwepurasitiki iyi ndeyekuti inogona kudzokororwa zvachose kana kuomeswa.

Muzvinafundo Liangbing Hu akataura kuti iyi bioplastic ine huwandu hwakawanda hwekushandisa, semuenzaniso, inogona kuumbwa kuita firimu rekushandisa mumabhegi epurasitiki uye kurongedza. Ichi ndicho chimwe chekushandiswa kukuru kwepurasitiki uye chimwe chezvikonzero zvemarara. Pamusoro pezvo, vaongorori vakati iyi bioplastic inogona kuumbwa kuita akasiyana maumbirwo, saka inotarisirwa zvakare kushandiswa mukugadzira mota.

Chikwata chicharamba chichiongorora kukanganisa kwekuwedzera chiyero chekugadzirwa kwemasango, nokuti kugadzirwa kwakakura kungada kushandiswa kwehuni yakawanda, iyo inogona kuva nemigumisiro yakakomba pamasango, kutonga kwevhu, ecosystems, uye kuchinja kwemamiriro ekunze. Chikwata chekutsvagisa chakashanda nevanoongorora zvisikwa zvemasango kugadzira dondo rekufananidza modhi rinobatanidza kutenderera kwekukura kwesango kune huni-plastiki yekugadzira maitiro.

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