PLA, tseem hu ua polylactic acid yog polymerized los ntawm poly lactic acid.Polylactic acid muaj ib tug zoo heev biodegradability, compatibility thiab nqus, nws yog ib tug uas tsis yog-tshuaj lom, tsis yog hluavtaws polymer khoom .lts raw khoom yog polylactic acid, uas yog tsuas yog muab los ntawm fermentation ntawm starch, xws li com thiab rc.Nws tseem tuaj yeem tau txais los ntawm cellulose, khib nyiab hauv chav ua noj lossis ntses pov tseg.
PLA muaj ntau yam khoom siv raw, thiab cov khoom tsim los ntawm nws tuaj yeem ncaj qha composted lossis incinerated, uas tuaj yeem ua tau raws li cov kev xav tau ntawm kev txhim kho kom ruaj khov Cov pob tshab zoo thiab qee qhov tawv tawv, bio-compatibility thiab kub-tiv taus ntawm PLA yog cov laj thawj tseem ceeb. rau nws daim ntawv thov dav.
Tsis tas li ntawd, PLA muaj thermal-plasticity thiab nws tuaj yeem siv rau ntau qhov chaw, xws li cov khoom ntim, cov khoom ntim, thiab lwm yam.. nws feem ntau yog siv rau cov khoom siv pov tseg xws li cov ntaub ntawv pov tseg thiab cov khoom ntim khoom, nrog rau cov khoom siv hluav taws xob thiab kev kho mob.
Piv nrog rau cov khoom siv petrochemical, kev siv lub zog hauv kev tsim cov polylactic acid tsuas yog 20% txog 50% ntawm cov khoom siv petrochemical, thiab cov pa roj carbon dioxide tsim tsuas yog 50% ntawm cov khoom siv petrochemical .Yog li ntawd, kev tsim cov khoom siv polylactic acid degradable yog tsim nyog. los daws teeb meem thoob ntiaj teb ib puag ncig thiab hluav taws xob.
Cov yam ntxwv ntawm PLA
1. Biodegradability
Piv nrog rau cov yas yas, polylactic acid tuaj yeem degraded rau hauv CO2 thiab H2O los ntawm cov kab mob thiab lub teeb.lts bio-degradation cov khoom yog non-toxic thiab harmless thiab yuav tsis ua phem rau ib puag ncig.Lub monomer rau kev tsim cov polylactic, uas tuaj yeem fermented los ntawm cov qoob loo xws li nplej nplej thiab qab zib beet los yog cov khoom siv ua liaj ua teb. Yog li ntawd, cov khoom siv raw rau kev tsim polylactic acid yog txuas ntxiv.Polylactic acid raws li cov khoom siv biodegradable yog dav siv.
2. Bio-compatibility thiab Absorb-muaj peev xwm
Polylactic acid tuaj yeem hydrolyzed los ntawm acid lossis enzyme los tsim lactic acid hauv tib neeg lub cev.Raws li cov metabolite ntawm cov hlwb, polylactic acid tuaj yeem txuas ntxiv metabolized los ntawm enzymes hauv lub cev, tsim CO2 thiab H2O.Yog li, polylactic acid tsis muaj tshuaj lom thiab tsis muaj teeb meem rau tib neeg lub cev ntxiv rau nws muaj bio-compatibility zoo thiab bio-absorb-muaj peev xwm, Polylactic acid tau ntawv pov thawj los ntawm US Food and Drug Administration uas tuaj yeem siv los ua bio-cov ntaub ntawv rau cog rau hauv tib neeg.
3. Lub cev machinable
Raws li cov khoom siv thermoplastic polymer, poly lactic acid muaj cov yas zoo thiab lub cev ua haujlwm, nrog lub siab melting point, zoo elasticity thiab yooj, thiab zoo heev thermal forming peev xwm.Poly lactic acid cov ntaub ntawv zoo li cov ntaub ntawv polymer xws li polypropylene (PP), polystyrene (PS), thiab polypropylene ether resin (PPO), tuaj yeem ua tiav los ntawm extrusion, ncab, thiab txhaj tshuaj molding.
Post lub sij hawm: Nov-03-2022
