Dab tsi yog bioplastic?

Pin
Send
Share
Send

Bioplastic yog ntau yam khoom siv uas yog keeb kwm roj ntsha thiab txeem hauv qhov tsis muaj teeb meem. Pab pawg no suav nrog ntau cov khoom siv raw khoom siv hauv txhua hom teb. Cov ntaub ntawv zoo li no yog tsim los ntawm biomass (microorganisms thiab nroj tsuag), uas yog ib puag ncig zoo. Tom qab siv rau hauv xwm, lawv ploj mus rau hauv cov nplooj lwg, dej thiab carbon dioxide. Tus txheej txheem no tshwm sim nyob rau hauv kev cuam tshuam ntawm ib puag ncig ib puag ncig. Nws tsis muaj kev cuam tshuam los ntawm tus nqi ntawm biodegradation. Piv txwv li, yas ua los ntawm roj av degrades ntau nrawm dua li cov xyoob ntoo tuaj.

Kev faib tawm ntawm bioplastic

Ntau hom bioplastics yog conventionally muab faib ua cov pawg hauv qab no:

  • Thawj pab pawg. Nws suav nrog cov plastics ntawm qee qhov txheeb raws roj ntsha thiab cov hauv paus chiv keeb, uas tsis muaj peev xwm biodegrade. Cov no yog PE, PP thiab PET. Qhov no kuj suav nrog biopolymers - PTT, TPC-ET
  • Thib Ob. Cov pab pawg no suav nrog biodegradable plastics. Nws PLA, PBS thiab PH
  • Pawg thib peb. Cov ntaub ntawv ntawm pawg neeg no tau txais los ntawm cov ntxhia, yog li ntawd lawv yog biodegradable. Nov yog PBAT

Lub Koom Haum International ntawm Chemistry thuam lub tswvyim ntawm "bioplastic", raws li cov lus no ua rau tib neeg yuam kev. Qhov tseeb yog tias cov tib neeg uas paub me ntsis txog cov khoom thiab cov txiaj ntsig ntawm bioplastics tuaj yeem lees txais nws yog cov khoom siv ib puag ncig. Nws yog qhov muaj txiaj ntsig ntau los siv rau lub tswv yim ntawm "polymers ntawm keeb kwm roj ntsha". Hauv lub npe no, tsis muaj qhov tseeb ntawm cov txiaj ntsig ib puag ncig, tab sis tsuas yog hais meej txog qhov xwm ntawm cov khoom siv. Yog li, bioplastics tsis zoo dua li tsoos hluavtaws polymers.

Kev lag luam bioplastics niaj hnub

Niaj hnub no kev lag luam bioplastic yog sawv cev los ntawm ntau cov ntaub ntawv ua los ntawm cov khoom siv txuas dua tshiab. Cov tshuab xyoob ntoo ua los ntawm kab tsib thiab pob kws yog nrov. Lawv muab cov hmoov txhuv nplej siab thiab cellulose, uas yog, qhov tseeb, cov tshuaj polymers los ntawm qhov uas nws ua tau kom tau cov yas.

Cov pob kws muaj xyoob ntoo muaj nyob ntawm cov tuam txhab xws li Metabolix, NatureWorks, CRC, thiab Novamont. Kev siv pas nrig yog siv los tsim cov khoom siv los ntawm lub tuam txhab Braskem. Cov roj taum Castor tau dhau los ua cov khoom siv rau bioplastics uas ua los ntawm Arkema. Polylactic acid tsim los ntawm Sanyo Mavic Media Co Ltd. ua ib tug CD biodegradable. Rodenburg Biopolymers ua bioplastics los ntawm cov qos yaj ywm. Nyob rau lub sijhawm tam sim no, kev tsim cov xyoob ntoo los ntawm cov khoom siv dua tshiab yog qhov xav tau, cov kws tshawb fawb niaj hnub nthuav tawm cov qauv tshiab thiab kev tsim kho nyob rau hauv cov kev taw qhia no.

Pin
Send
Share
Send

Saib cov video: Yog Hmoov Dab Tsi - Linda Vang (Kaum Ib Hlis 2024).