Zoo meej polymers - polymers uas sib npaug ntawm cov khoom siv lub cev thiab ib puag ncig - tsis muaj, tab sis polybutylene (PBat) yog ze dua rau kev zoo tag nrho ntau dua.
Tom qab kaum tawm ntawm kev ua tsis tiav lawv cov khoom lag luam xaus rau hauv cov av qias neeg thiab dej hiav txwv, cov khoom siv hluav taws xob, cov cuab yeej ua hluavtaws muaj txiaj ntsig tau muaj lub luag haujlwm. Ntau tus yog redoubling lawv cov kev siv zog los txhawb kev rov ua dua tshiab rau kev thuam cov lus thuam. Lwm cov tuam txhab uas sim ua kom haum rau cov teeb meem pov tseg los ntawm kev nqis peev hauv biodegradable biodarctions xws li kev cia siab tias txhua yam pov tseg.
Tab sis ob qho tib si rov ua dua tshiab thiab biopolymers ntsib cov teeb meem. Piv txwv li, txawm hais tias muaj kev mob siab rau xyoo, Tebchaws Asmeskas tseem rov siv dua tsawg dua 10 feem pua ntawm cov plastics. Thiab bio-based polymers - feem ntau cov khoom ntawm fermentation - yog kev tawm tsam kom ua tiav qhov kev ua tau zoo thiab teev ntawm cov hluavtaws hluavtaws lawv tau siv los hloov.
PBAT ua ke ib co ntawm cov khoom muaj txiaj ntsig ntawm cov khoom hluavtaws thiab bio-bio raws polymers. Nws yog muab tau los ntawm cov khoom petrochemical - ua kom zoo dua Terephthalic acid (PTA), Butanediol thiab adipic acid, tab sis nws yog biodegradable. Raws li cov hluavtaws polymer, nws tuaj yeem yooj yim loj, thiab nws muaj cov khoom siv lub cev uas xav tau los ua cov yeeb yaj kiab hloov pauv rau cov kev ua yeeb yam.
Txaus siab rau PBAT yog nyob ntawm qhov nce. Tsim cov neeg tsim khoom xws li Lub Tebchaws Yelemees's Basef thiab Ltalis yog pom kev thov nce ntxiv tom qab nurtures kev ua lag luam. Lawv tau koom nrog ntau tshaj li ib nrab ntawm cov neeg tsim khoom Asian uas cia siab tias kev lag luam rau cov neeg muaj kev vam meej li cov tsoomfwv hauv cheeb tsam rau kev ruaj khov.
Marc Verbruggen, yav dhau los CEO ntawm PLA cov chaw tsim khoom cov khoom lag luam thiab tam sim no PBat yog "tus neeg muaj peev xwm ntseeg tau, nws yog ua ntej ntawm Poles Succediol Ester ( PBS) thiab Pha Cov Neeg Sib Tw. Thiab nws yog yuav nyob raws li cov khoom ua ke nrog ob qho tseem ceeb biodegradable plastics, uas nws hais yog ua cov khoom lag luam rau cov ntawv siv nruj.
Ramani Narayan, yog ib tug xibfwb ntawm lub xeev cov khoom lag luam, tsis yog cov pa roj carbon monoxide, ntau dua li cov pa roj carbon monoxide Ester Bonds yog yooj yim hydrolyzed thiab puas los ntawm enzymes.
Piv txwv li, polylacactic acid thiab pha yog cov polyesters uas thuam thaum lawv cov nyiaj es muag. Tab sis cov polyester feem ntau - polyethylene terephthalate (tsiaj), siv hauv fibers thiab dej qab zib fwj - tsis tawg yooj yim. Qhov no yog vim tias cov tsos ntxhiab tsw nyob rau hauv nws lub pob txha los ntawm PTA. Raws li Narayan, lub nplhaib uas muab cov qauv teeb tsa kuj ua rau tsiaj hydrophobic. "Dej tsis yooj yim kom tau txais hauv thiab nws qeeb qeeb tag nrho cov txheej txheem hydrolysis," nws hais.
Basf ua rau polybutylene Terephthalate (PBT), lub polyester ua los ntawm Butanediol. Lub tuam txhab cov kws tshawb nrhiav tau saib rau cov biodegradable polymer lawv tuaj yeem tsim tau yooj yim. Lawv hloov qee PTA hauv PBT nrog adipose diacid glycolic acid. Nyob rau hauv txoj kev no, cov ntxhiab tsw ntawm cov polymer sib cais kom lawv tuaj yeem biodegradable. Nyob rau tib lub sijhawm, txaus PTA yog sab laug kom muab cov polymer muaj txiaj ntsig zoo lub cev.
Narayan ntseeg PBat yog me ntsis ntau dua biodegradable dua li cov pla, uas yuav tsum muaj kev muaj cov nplooj lwg kom decompose. Tab sis nws tsis tuaj yeem sib tw nrog cov lag luam phas, uas yog biodegradable nyob rau hauv ntuj tej yam kev mob, txawm nyob hauv ib puag ncig marine.
Cov kws tshaj lij feem ntau muab cov khoom siv lub cev ntawm pbat rau cov polyethylene, ib lub hnab ntim khoom loj, xws li hnab khib nyiab.
PBAT feem ntau sib xyaw nrog cov PLA, cov tawv polymer nrog polystyrene-zoo li cov khoom. BASF ECOVIO hom yog raws li qhov sib xyaw no. Piv txwv li, Verbruggen hais tias lub hnab ntim khoom txuas ntxiv muaj 85% PBAT thiab 15% PLA.
Novamont ntxiv lwm qhov loj me rau daim ntawv qhia. Lub tuam txhab sib xyaw PBat thiab lwm cov biodegradable aliphaatic cov ntxhiab tsw qab nrog cov hmoov txhuv nplej siab los tsim cov khoom siv rau cov ntawv thov tshwj xeeb.
Stefano Facco, tus thawj tswj hwm lub tuam txhab tshiab, "Novamont tau tsom mus rau cov kev thov uas muaj peev xwm ntxiv tau cov khoom nws tus kheej. "
Kev ua lag luam loj rau PBat yog mulch, uas tau sib kis hauv cov qoob loo kom tiv thaiv cov nroj thiab pab khaws cia noo noo. Thaum polyethylene zaj duab xis yog siv, nws yuav tsum tau rub tawm thiab ntau zaus faus rau hauv av pov tseg. Tab sis biodegradable cov yeeb yaj kiab tuaj yeem cog ncaj qha rau hauv av.
Lwm qhov kev ua lag luam loj yog cov hnab khib nyiab txuas rau cov khoom noj khoom haus thiab sau cov khoom noj khoom haus thiab chaw pov tseg.
Hnab los ntawm cov tuam txhab xws li biobag, tsis ntev los no tau los ntawm novamont, tau raug muag ntawm cov khw muag khoom rau xyoo.
Lub sij hawm ncua: 26-11-21