Puas yog PLA biodegradable?
•Polylactic acid, tseem hu ua Pla, tau nyob ib puag ncig tau ntau xyoo. Txawm li cas los xij, cov neeg tsim khoom loj ntawm PLA muaj tsuas yog nyuam qhuav nkag mus hauv kev lag luam tom qab kev ruaj ntseg nyiaj los ntawm cov tuam txhab loj los hloov hluavtaws plastics. Yog li, yog pla biodegradable?
•Thaum cov lus teb tsis yooj yim, peb tau txiav txim siab los muab kev piav qhia thiab pom zoo nyeem ntxiv rau cov neeg nyiam. PLA tsis yog biodegradable, tab sis nws yog degradable. Cov enzymes uas tuaj yeem tsoo cov PLA tsis tshua pom muaj nyob hauv ib puag ncig. Proteinase K yog ib qho enzyme uas catalenyzes qhov kev cuam tshuam ntawm pla los ntawm hydrolysis. Cov kws tshawb fawb xws li Williams nyob rau xyoo 1981 thiab Miyauchi hauv 2001 tshawb nrhiav qhov teeb meem ntawm seb Pla yog biodegradable. Lawv cov txiaj ntsig tau sib tham hauv phau ntawv BiomileS kev kawm tawm: Kev qhia rau cov ntaub ntawv kho mob thiab nthuav tawm ntawm kev sib ntsib ntawm European Biomicassis Lub Koom Haum. Raws li cov peev txheej no, PLA yog tswj tau ntau los ntawm hydrolysis, ywj siab ntawm txhua cov neeg sawv cev muaj xyoob ntoo. Thaum coob tus neeg yuav xav tias pla yog biodegradable, nws yog ib qho tseem ceeb kom paub qhov no.
•Qhov tseeb, hydrolysis ntawm cov pla los ntawm proteinase k yog li tsis tshua muaj tias nws tsis tseem ceeb txaus kom tau sib tham ntxiv nyob rau hauv biomaterial scient. Peb vam tias qhov no qhia meej cov teeb meem uas ib puag ncig biodegradability thiab peb yuav txuas ntxiv kev daws teeb meem zoo tshaj plaws rau koj cov kev xav tau zoo thiab biodegradable yas xav tau.
In Xaus:
PLA yog biodegradable yas dav siv nyob rau hauv cov khoom txhua hnub xws li hnab uas siv cov dej thiab khob. Txawm li cas los xij, nws tuaj yeem tsuas yog txwv hauv kev muaj kev sib xyaw ua ke lossis anaerobic zom zaws ib puag ncig, ua rau muaj kev cuam tshuam hauv ib puag ncig ib puag ncig cov nyom. Cov kev tshawb fawb tau lees tias pla deg degrades me me hauv kev ua tub rog marine.
Lub Sijhawm Post: Nov-01-2023
