Lactic Acid nyob rau hauv Biodegradable Polymers: Sustainable Manufacturing Guide

Raws li lub ntiaj teb kev thawb rau kev ruaj khov zuj zus, kev lag luam tau hloov pauv mus rau biodegradable polymers raws li lwm txoj hauv kev siv roj av ib txwm muaj- cov khoom siv yas. Lactic acid, ib qho tshwm sim ntawm cov organic acid, tau tshwm sim los ua cov khoom siv tseem ceeb rau kev tsim cov biodegradable polymers, muab kev ruaj khov thiab eco-cov tshuaj zoo rau ntim, textiles, thiab lwm yam khoom siv. Phau ntawv qhia no tshawb txog seb lactic acid siv li cas hauv biodegradable polymer manufacturing, nws cov txiaj ntsig, thiab cov qauv tshiab hauv qhov kev loj hlob sai.

 

Lactic acid yog tsim los ntawm fermentation ntawm cov khoom siv txuas ntxiv dua tshiab xws li pob kws hmoov nplej, qab zib, thiab cassava. Cov txheej txheem fermentation no yog ib puag ncig tus phooj ywg, vim nws siv cov kab mob ntuj tsim los hloov cov carbohydrates rau hauv lactic acid, txo kev cia siab ntawm fossil fuels. Cov txiaj ntsig lactic acid yog tom qab ntawd polymerized los ua polylactic acid (PLA), feem ntau biodegradable polymer ua los ntawm lactic acid. PLA yog biodegradable, compostable, thiab muaj cov khoom zoo sib xws rau cov yas yas, ua rau nws haum rau ntau yam kev siv.

 

Ib qho ntawm cov txiaj ntsig tseem ceeb ntawm kev siv lactic acid hauv biodegradable polymers yog nws txoj kev ruaj khov. Tsis zoo li roj av-raws li plastics, uas siv sij hawm ntau pua xyoo los decompose, PLA ua los ntawm lactic acid lov ua carbon dioxide thiab dej hauv composting ib puag ncig, txo cov pov tseg yas thiab ib puag ncig muaj kuab paug. Qhov no ua rau nws yog qhov kev xaiv zoo tshaj plaws rau ib qho - siv ntim khoom, xws li cov thawv ntim khoom noj, lub hnab ntim khoom, thiab cov khoom siv pov tseg, uas yog cov koom tes loj rau cov pov tseg yas thoob ntiaj teb.

 

Ntxiv nrog rau nws txoj kev ruaj khov, lactic acid muaj cov khoom siv zoo heev rau kev tsim cov polymer. PLA ua los ntawm lactic acid muaj zog tensile zoo, yooj, thiab pob tshab, ua rau nws haum rau ntau yam kev siv, xws li ntim zaj duab xis, fibers, thiab 3D luam ntawv cov ntaub ntawv. Nws kuj tseem tuaj yeem sib xyaw nrog lwm cov polymers los txhim kho nws cov khoom, xws li kub tsis kam thiab kav ntev, nthuav dav nws cov kev siv ntau yam.

 

Kev tsim cov txheej txheem ntawm lactic acid-raws li biodegradable polymers kuj ua tau zoo dua thiab raug nqi- zoo. Kev nce qib hauv fermentation thev naus laus zis tau txo cov nqi tsim khoom, ua rau PLA muaj kev sib tw nrog cov tsoos yas. Tsis tas li ntawd, kev siv cov khoom siv txuas ntxiv txuas ntxiv pab txo cov pa roj carbon emissions, ua raws li cov hom phiaj kev nyab xeeb thoob ntiaj teb thiab cov koom haum kev lag luam ruaj khov.

 

Rau cov chaw tsim khoom thiab cov neeg xa khoom nrhiav kom tau txais kev coj ua zoo,lactic acidyog ib yam khoom muaj nqis heev. Thaum muab cov lactic acid rau biodegradable polymer ntau lawm, nws yog ib qho tseem ceeb uas yuav tau xaiv cov khoom siab tshaj -purity (feem ntau 90% los yog siab dua) uas yog tsim los ntawm cov khoom noj tauj dua tshiab. Saib rau cov chaw muag khoom uas muaj ntawv pov thawj xws li USDA Organic, EU ECOCERT, lossis FDA pom zoo, nyob ntawm daim ntawv thov npaj. Nrog rau kev thov thoob ntiaj teb rau biodegradable polymers nce, lactic acid tau npaj los ua lub luag haujlwm tseem ceeb hauv kev tsim khoom lag luam yav tom ntej.