1. Polylactic acid (PLA) yog hom tshiab ntawm cov khoom siv biodegradable, ua los ntawm cov hmoov txhuv nplej siab los ntawm cov khoom siv cog qoob loo tshiab tuaj yeem cog (xws li pob kws). Cov hmoov txhuv nplej siab cov ntaub ntawv yog saccharified kom tau txais cov piam thaj, uas tom qab ntawd fermented los ntawm cov piam thaj thiab qee yam kab mob los tsim cov siab-lity acid lactic acid, thiab tom qab ntawd qee yam tshwj xeeb molecular phaus polylactic acid yog tsim los ntawm cov tshuaj lom neeg. Nws muaj kev ruaj khov ntawm biodegradability thiab tuaj yeem raug xeb los ntawm cov kab mob me me hauv qhov xwm tom qab siv, thiab thaum kawg carbon dioxide thiab dej tsim tawm yam tsis muaj kuab paug ib puag ncig. Qhov no tau txais txiaj ntsig zoo rau kev tiv thaiv ib puag ncig thiab raug lees paub tias yog cov khoom siv ib puag ncig. Cov av plhom yog tseem kho los ntawm kev kub hnyiab thiab kev ua kom tuag, ua rau kom muaj ntau ntawm cov tsev cog khoom roj cua kom tawm mus rau saum huab cua, thaum polylactic acid plastics raug faus rau hauv av kom ua rau paug, thiab cov pa roj carbon dioxide tsim tawm ncaj qha nkag cov av organic teeb meem los yog nqus tau los ntawm cov nroj tsuag, thiab yuav tsis raug rho tawm mus rau saum huab cua. Yuav tsis ua rau lub tsev xog paj nyhuv.
2. Cov khoom siv ruaj khov thiab lub cev. Polylactic acid yog tsim nyog rau ntau txoj kev ua xws li tshuab moulding thiab thermoplastic thiab nws yooj yim rau txheej txheem thiab muaj ntau yam kev siv. Nws tuaj yeem siv los ua ntau yam khoom siv yas, cov khoom noj khoom noj, cov thawv ntim zaub mov, lub thawv ntim khoom noj tsis nrawm, ntaub tsis-ntaub, kev lag luam thiab cov khoom lag luam los ntawm kev lag luam mus rau kev siv pej xeem. Thiab tom qab ntawd ua tiav rau kev ua liaj ua teb cov ntaub, kev saib xyuas kev noj qab haus huv, ntaub so, cov khoom siv tsis huv, sab nraum zoov tiv thaiv ultraviolet ntaub, tsev pheebsuab ntaub, ntaub pua plag, thiab lwm yam.
3. Kev ua tau zoo ntawm kev ua haujlwm thiab degradability. Polylactic acid kuj tseem siv dav hauv cov tshuaj, xws li kev tsim cov khoom siv pov tseg cov khoom pov tseg, kev rho tawm cov phais mob tsis ua haujlwm, thiab lwm yam, thiab cov roj ntsha uas tsis tshua muaj molecular-hnyav polylactic ua cov tshuaj tiv thaiv-tso cov ntim khoom ntim.
4. Ntxiv rau cov yam ntxwv tseem ceeb ntawm plooj av (biodegradable plastics), polylactic acid (PLA) kuj muaj nws tus kheej cov yam ntxwv tshwj xeeb. Lub zog, ua kom pom tseeb, thiab tiv taus kev nyab xeeb hloov ntawm ib txwm siv cov tshuab biodegradable tsis zoo li cov plastics zoo tib yam.
5. Cov khoom siv lub cev tseem ceeb ntawm polylactic acid (PLA) thiab petrochemical hluavtaws plastics yog qhov zoo sib xws, nws tuaj yeem siv dav los tsim ntau yam khoom siv. Polylactic acid kuj muaj qhov ci thiab ua kom pom tseeb, uas piv nrog cov yeeb yaj kiab ua los ntawm polystyrene, thiab tsis tuaj yeem muab los ntawm lwm cov khoom lag luam biodegradable.
6. Polylactic acid (PLA) muaj qhov muaj zog zoo tshaj plaws thiab ductility. Polylactic acid kuj tseem tuaj yeem tsim los ntawm ntau cov txheej txheem kev ua, xws li: yaj mauv extrusion molding, txhaj tshuaj moulding, tshuab zaj duab xis moulding, ua npuas ncauj molding thiab nqus tsev molding. Nws muaj cov ntawv zoo sib xws raws li cov ntaub ntawv siv dav, thiab nws kuj muaj kev ua luam ntawv zoo ib yam li cov tsoos ua yeeb yaj kiab. Nyob rau hauv txoj kev no, polylactic acid tuaj yeem ua rau ntau yam khoom siv hauv teb rau cov kev xav tau ntawm kev lag luam sib txawv.
7. Polylactic acid (PLA) zaj duab xis muaj huab cua txaus permeability, oxygen permeability thiab carbon dioxide permeability, thiab nws tseem muaj cov yam ntxwv ntawm kev ntxhiab tsw. Cov kab mob thiab cov pwm yog qhov yooj yim kom yooj yim rau cov nplaim biodegradable plastics, yog li muaj kev txhawj xeeb txog kev nyab xeeb thiab kev nyiam huv. Txawm li cas los xij, polylactic acid tsuas yog yas biodegradable nrog cov tshuaj tua kab mob zoo thiab ua kom zoo nkauj.
8. Thaum polylactic acid (PLA) yog incinerated, nws txoj kev sib xyaw calorific nqi yog tib yam li ntawm daim ntawv incineration, uas yog ib nrab ntawm qhov ntawd ntawm ib txwm plastics (xws li polyethylene), thiab lub incineration ntawm polylactic acid yuav tsis tso cov pa roj lom zoo li raws li nitrides thiab sulfides. Tib neeg lub cev tseem muaj cov kab mob lactic acid hauv hom monomer, uas qhia txog kev nyab xeeb ntawm cov khoom decomposable no.