Puas yog PLA Biodegradable?
•Polylactic acid, tseem hu ua PLA, tau nyob ib ncig ntawm ntau xyoo.Txawm li cas los xij, cov neeg tsim khoom loj ntawm PLA tsuas yog nyuam qhuav nkag mus rau hauv kev ua lag luam tom qab tau txais nyiaj txiag los ntawm cov tuam txhab loj txaus siab los hloov cov khoom siv hluavtaws.Yog li, yog PLA biodegradable?
•Txawm hais tias cov lus teb tsis yooj yim, peb txiav txim siab los muab cov lus piav qhia thiab pom zoo nyeem ntxiv rau cov neeg nyiam.PLA tsis yog biodegradable, tab sis nws yog degradable.Enzymes uas tuaj yeem rhuav tshem PLA tsis tshua pom muaj nyob hauv ib puag ncig.Proteinase K yog ib qho enzyme uas catalyzes degradation ntawm PLA los ntawm hydrolysis.Cov kws tshawb fawb xws li Williams xyoo 1981 thiab Tsuji thiab Miyauchi xyoo 2001 tau tshawb nrhiav qhov teeb meem ntawm seb PLA puas tuaj yeem ua rau biodegradable.Lawv cov txiaj ntsig tau sib tham hauv phau ntawv Biomaterials Science: Kev Taw Qhia rau Cov Khoom Siv Kho Mob thiab nthuav tawm ntawm lub rooj sib tham ntawm European Biomaterials Society.Raws li cov peev txheej no, PLA yog tswj hwm feem ntau los ntawm hydrolysis, ywj siab ntawm txhua tus neeg ua haujlwm biologic.Txawm hais tias muaj coob tus neeg xav tias PLA yog biodegradable, nws tseem ceeb heev kom paub qhov no.
•Qhov tseeb, hydrolysis ntawm PLA los ntawm proteinase K yog tsawg heev uas nws tsis tseem ceeb txaus los tham ntxiv hauv biomaterial science.Peb cia siab tias qhov no qhia meej txog cov teeb meem nyob ib puag ncig PLA biodegradability thiab peb yuav txuas ntxiv peb cov kev siv zog los muab cov kev daws teeb meem zoo tshaj plaws rau koj cov kev xav tau ntawm ib puag ncig thiab biodegradable yas.
In xaus:
PLA yog cov yas biodegradable siv dav hauv cov khoom siv niaj hnub xws li cov hnab pov tseg thiab khob.Txawm li cas los xij, nws tsuas tuaj yeem degrade nyob rau hauv industrial composting los yog anaerobic digestion ib puag ncig, ua degradation nyob rau hauv tej yam ntuj tso ib puag ncig nyuaj.Cov kev tshawb fawb tau lees paub tias PLA degrades tsawg kawg hauv ib puag ncig marine.
Post lub sij hawm: Nov-01-2023
