Matumba osungiramo zinthu zowonongeka amatanthauza kuti akhoza kuchepetsedwa, koma kuwonongeka kungagawidwe kukhala "owonongeka" ndi "owonongeka kwathunthu".
Kuwonongeka pang'ono kumatanthauza kuwonjezera zina zowonjezera (monga wowuma, wowuma wosinthidwa kapena cellulose, photosensitizers, biodegradants, etc.) panthawi yopanga kuti ikhale yokhazikika.
Pambuyo kugwa, zimakhala zosavuta kusokoneza mapulasitiki m'chilengedwe.
Kuwonongeka kwathunthu kumatanthauza kuti zinthu zonse zapulasitiki zimawonongeka kukhala madzi ndi carbon dioxide. Zopangira zazikuluzikulu zomwe zimatha kuwonongeka kwambiri zimasinthidwa kukhala lactic acid (chimanga, chinangwa, etc.),
PLA. Polylactic acid (PLA) ndi mtundu watsopano wazinthu zokhazikika komanso zongowonjezedwanso. Wowuma zopangira zowuma zimasanjidwa kuti apeze shuga, yomwe imafufutidwa ndi glucose ndi mitundu ina.
Imasandulika kukhala lactic acid yapamwamba, ndiyeno molekyulu yolemera polylactic acid imapangidwa ndi njira yophatikizira mankhwala. Ili ndi biodegradability yabwino ndipo imatha kugwiritsidwa ntchito ndi tizilombo tating'onoting'ono m'chilengedwe.
Imawonongeka kotheratu pamikhalidwe ina ndipo potsirizira pake imatulutsa carbon dioxide ndi madzi popanda kuipitsa chilengedwe. Izi ndizopindulitsa kwambiri pakuteteza chilengedwe ndipo zimazindikirika ngati zinthu zoteteza chilengedwe. Pakali pano matumba olongedza amatha kuwonongeka
Zinthu zazikuluzikulu zochokera ku bio zimapangidwa ndi PLA + PBAT, zomwe zimatha kuwonongeka kwathunthu m'madzi ndi carbon dioxide m'miyezi 3-6 pansi pa chikhalidwe cha composting (madigiri 60-70), omwe saipitsa chilengedwe.
Chifukwa chiyani muwonjezere PBAT Shenzhen Jiuxinda pano kuti ndikuuzeni kuti PBAT ndi copolymer ya dicarboxylic acid, 1,4-butanediol, ndi terephthalic acid. Ndi mtundu wa biodegradable kwathunthu.
A mankhwala apanga aliphatic onunkhira polima, PBAT ali kusinthasintha kwambiri ndipo angagwiritsidwe ntchito filimu extrusion, kuwomba processing, extrusion ❖ kuyanika ndi akamaumba processing zina. PLA ndi PBAT
Cholinga cha kusakaniza ndi kukonza kulimba kwa PLA, biodegradation ndi kuumba processability. PLA ndi PBAT sizigwirizana, kotero kusankha cholumikizira choyenera kungapangitse kuti PLA ikhale yofunika kwambiri.kusintha.
Nthawi yotumiza: Sep-03-2021