Bioplastic ke eng?

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Bioplastic ke lisebelisoa tse fapaneng tseo e leng tsa tlhaho le tse senyehileng tlhahong ntle le mathata. Sehlopha sena se kenyelletsa lihlahisoa tse fapaneng tse tala tse sebelisoang masimong a mefuta eohle. Lisebelisoa tse joalo li hlahisoa ka biomass (microorganisms le limela), tse bolokang tikoloho hantle. Kamora ho sebelisoa tlholehong, li bola ho ba manyolo, metsi le carbon dioxide. Ts'ebetso ena e etsahala tlasa ts'usumetso ea maemo a tikoloho. Ha e angoe ke sekhahla sa phetoho ea limela. Mohlala, polasetiki e entsoeng ka peterole e theoha kapele haholo ho feta polasetiki e tsoang bio.

Kemiso ea likokoana-hloko

Mefuta e fapaneng ea bioplastics ka kakaretso e arotsoe ka lihlopha tse latelang:

  • Sehlopha sa pele. E kenyelletsa li-plastiki tse nang le tlhaho ea tlhaho le ea likokoana-hloko, tse se nang bokhoni ba ho fetola lihlahisoa. Tsena ke PE, PP le PET. Hona ho kenyelletsa biopolymers - PTT, TPC-ET
  • Ea bobeli. Sehlopha sena se kenyelletsa polasetiki e ka senyehang habonolo ea biodegradability. Ke PLA, PBS le PH
  • Sehlopha sa boraro. Lisebelisoa tsa sehlopha sena li fumanoa liminerale, ka hona li ka senyeha habonolo. Ena ke PBAT

Mokhatlo oa Machaba oa Chemistry o nyatsa mohopolo oa "bioplastic" kaha lentsoe lena le khelosa batho. Taba ke hore batho ba sa tsebeng letho ka litšobotsi le melemo ea li-bioplastics ba ka e amohela e le sesebelisoa se bolokang tikoloho. Ho bohlokoa haholo ho sebelisa mohopolo oa "li-polymers tsa tlhaho ea tlhaho". Ka lebitso lena, ha ho na leselinyana la melemo ea tikoloho, empa e hatisa feela mofuta oa thepa. Kahoo, li-bioplastics ha li betere ho feta lipolima tse tloaelehileng tsa maiketsetso.

Mmaraka oa sejoale-joale oa bioplastics

Kajeno 'maraka oa bioplastic o emeloa ke lisebelisoa tse fapaneng tse entsoeng ka lisebelisoa tse nchafatsoang. Likokoana-hloko tse entsoeng ka 'moba le poone li ratoa haholo. Ba fana ka starch le selulose, eo ha e le hantle e leng lipolisi tsa tlhaho tseo ho tsona ho ka khonehang ho fumana polasetiki.

Li-bioplastics tsa poone li fumaneha ho tsoa lik'hamphaning tse kang Metabolix, NatureWorks, CRC le Novamont. 'Moba o sebelisoa ho hlahisa thepa ho tsoa k'hamphaning ea Braskem. Oli ea Castor e fetohile sesebelisoa sa lihlahisoa tsa bioplastics tse hlahisoang ke Arkema. Asiti ea polylactic e entsoeng ke Sanyo Mavic Media Co Ltd. e entse CD e senyehang habonolo. Rodenburg Biopolymers e hlahisa bioplastics ho tsoa litapole. Hajoale, tlhahiso ea bioplastics e tsoang linthong tse nchafatsoang e ea hlokahala, bo-rasaense ba lula ba hlahisa lisampole tse ncha le nts'etsopele ntlheng ena.

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Shebella video: DIY bioplastics from orange peels and ground coffee (November 2024).