Iplastiki yenye yemithombo emikhulu yongcoliseko kwiplanethi, kwaye kuthatha amakhulu eminyaka ukuthotywa ngokwendalo. Ngokweengxelo zeendaba zangaphandle, abaphandi kwiYunivesithi yaseYale kwiSikolo sokuSingqongileyo kunye neYunivesithi yaseMaryland basebenzise iimveliso zokhuni ukwenza i-bioplastics ehlala ixesha elide kwaye ezinzileyo ukusombulula enye yezona ngxaki zicinezelayo zokusingqongileyo.

UNjingalwazi oNcedisayo uYuan Yao weSikolo seNdawo seYunivesithi yaseYale kunye noNjingalwazi uLiangbing Hu weYunivesithi yaseMaryland Centre for Materials Innovation kunye nabanye baye basebenzisana kuphando ukuze bahlaziye i-matrix enemingxuma emthini wendalo ibe ludaka. Abaphandi bathi iplastiki eyenziwe ye-biomass ibonisa amandla aphezulu kunye nozinzo xa iqulethe ulwelo, kunye nokumelana ne-UV. Isenokwenziwa kwakhona kwimo engqongileyo yendalo okanye yonakaliswe ngokukhuselekileyo. Xa kuthelekiswa neeplastiki ezisekwe kwipetroleum kunye nezinye iiplastiki ezinokubola, umjikelo wobomi bayo impembelelo yokusingqongileyo incinci.

U-Yao uthe: "Siye saqulunqa inkqubo yokuvelisa elula kunye nechanekileyo engasebenzisa iinkuni ukuvelisa iiplastiki ze-bio-based kunye nezixhobo ezifanelekileyo zomatshini."

Ukuze benze umxube we-slurry, abaphandi basebenzisa iitshiphusi zokhuni njengezinto ezikrwada kwaye basebenzisa i-biodegradable kunye ne-recyclable e-eutectic enzulu yokunyibilikisa ukwakhiwa kwesakhiwo se-porous esikhululekile kumgubo. Kumxube ofunyenweyo, ngenxa ye-nano-scale entanglement kunye ne-hydrogen bonding phakathi kwe-lignin ehlaziyiweyo kunye ne-cellulose micro / nano fiber, izinto eziphathekayo zinomxholo ophezulu oqinileyo kunye ne-viscosity ephezulu, kwaye inokuphoswa kwaye igqitywe ngaphandle kokuqhekeka.

Abaphandi ke baqhuba uvavanyo olubanzi lomjikelo wobomi ukuvavanya impembelelo yokusingqongileyo ye-bioplastics kunye neeplastiki eziqhelekileyo. Iziphumo zibonise ukuba xa iphepha le-bioplastic lingcwatywa emhlabeni, izinto zaphuka emva kweeveki ezimbini kwaye zachithwa ngokupheleleyo emva kweenyanga ezintathu; Ukongeza, abaphandi bathi i-bioplastics inokwahlulwa ibe ludaka ngokuvuselela oomatshini. Ngaloo ndlela, i-DES ifunyenwe kwaye isetyenziswe kwakhona. U-Yao uthe: "Inzuzo yale plastiki kukuba iyakwazi ukuphinda isetyenziswe ngokupheleleyo okanye i-biodegraded. Siye sanciphisa inkunkuma yezinto eziphathekayo ezihamba kwindalo."

UNjingalwazi uLiangbing Hu uthe le bioplastic inoluhlu olubanzi lwezicelo, umzekelo, inokubunjwa kwifilimu yokusetyenziswa kwiingxowa zeplastiki kunye nokupakishwa. Le yenye yezona zinto zisetyenziswayo kwiiplastiki kunye nenye yezizathu zenkunkuma. Ukongeza, abaphandi bathi le bioplastic inokubunjwa kwiimilo ezahlukeneyo, ngoko ke kulindeleke ukuba isetyenziswe kwimveliso yeemoto.

Iqela liya kuqhubeka lihlola impembelelo yokwandisa umlinganiselo wemveliso kumahlathi, kuba imveliso enkulu ingafuna ukusetyenziswa kweenkuni ezininzi, ezinokuthi zibe neempembelelo ezinzulu kumahlathi, ulawulo lomhlaba, i-ecosystems, kunye nokutshintsha kwemozulu. Iqela lophando liye lasebenza kunye ne-ecologists yehlathi ukwenza imodeli yokulinganisa ihlathi edibanisa umjikelo wokukhula kwehlathi kunye nenkqubo yokwenziwa kweeplanga zeplastiki.

Iphinde yashicilelwa kwiGasgoo