PLA puas yog Biodegradable?
•Polylactic acid, tseem hu ua PLA, tau muaj nyob rau ntau xyoo. Txawm li cas los xij, cov neeg tsim khoom loj ntawm PLA nyuam qhuav nkag mus rau hauv kev ua lag luam tom qab tau txais nyiaj los ntawm cov tuam txhab loj uas xav hloov cov yas hluavtaws. Yog li, PLA puas yog biodegradable?
•Txawm hais tias cov lus teb tsis yooj yim, peb txiav txim siab los piav qhia thiab pom zoo kom nyeem ntxiv rau cov neeg txaus siab. PLA tsis yog biodegradable, tab sis nws yog degradable. Cov enzymes uas tuaj yeem rhuav tshem PLA tsis tshua pom muaj nyob rau hauv ib puag ncig. Proteinase K yog ib qho enzyme uas catalyzes qhov kev puas tsuaj ntawm PLA los ntawm hydrolysis. Cov kws tshawb fawb xws li Williams hauv xyoo 1981 thiab Tsuji thiab Miyauchi hauv xyoo 2001 tau tshawb nrhiav qhov teeb meem ntawm seb PLA puas yog biodegradable. Lawv cov txiaj ntsig tau tham hauv phau ntawv Biomaterials Science: An Introduction to Medical Materials thiab nthuav tawm ntawm lub rooj sib tham ntawm European Biomaterials Society. Raws li cov peev txheej no, PLA yog tswj hwm los ntawm hydrolysis, ywj pheej ntawm cov neeg sawv cev biological. Txawm hais tias ntau tus neeg yuav xav tias PLA yog biodegradable, nws yog ib qho tseem ceeb kom paub qhov no.
•Qhov tseeb, hydrolysis ntawm PLA los ntawm proteinase K yog qhov tsawg heev uas nws tsis tseem ceeb txaus los tham ntxiv hauv biomaterial science. Peb vam tias qhov no piav qhia 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 yas uas zoo rau ib puag ncig thiab biodegradable.
Ixaus lus:
PLA yog ib hom yas uas lwj tau yooj yim uas siv dav hauv cov khoom siv niaj hnub xws li cov hnab pov tseg thiab khob. Txawm li cas los xij, nws tsuas yog lwj tau hauv kev ua compost hauv kev lag luam lossis kev zom zaub mov anaerobic, ua rau kev lwj hauv cov chaw ib txwm muaj teeb meem. Cov kev tshawb fawb tau lees paub tias PLA lwj tsawg kawg nkaus hauv ib puag ncig hauv dej hiav txwv.
Lub sijhawm tshaj tawm: Kaum Ib Hlis-01-2023
