Kev faib tawm ntawm biodegradable hnab raw khoom
Tso lus
Nyob rau theem pib, cov ntaub ntawv biodegradable feem ntau yog cov hmoov txhuv nplej siab - cov yas degradable, uas tuaj yeem txuag tau qee cov khoom siv fossil thiab txo cov pa roj carbon dioxide emissions.Raws li kev ua haujlwm degradation, cov hmoov txhuv nplej siab tuaj yeem degraded, tab sis cov polyolefin polymerized nrog nws tsis tuaj yeem degraded. Nws tsuas tuaj yeem muaj nyob hauv cov xwm txheej me me, uas tsis tuaj yeem daws cov pa phem dawb huv thiab tseem yuav ua phem rau ib puag ncig ecological.
Ib qho ntawm cov ntaub ntawv cog lus yav tom ntej yog cov khoom siv biodegradable, uas yog biodegradable tag nrho thiab tsis muaj kuab paug rau ib puag ncig, uas muaj txiaj ntsig zoo rau kev tiv thaiv ib puag ncig, thiab tau lees paub tias yog cov khoom siv zoo ib puag ncig.
Cov khoom tseem ceeb ntawm cov khoom siv biodegradable yog PLA biodegradable khoom uas yog ua los ntawm ntuj siab polymer lossis ntuj monomer hluavtaws siab polymer.
Polylactic acid (PLA) : degradation muab faib ua ob theem: 1, thawj yog ntshiab tshuaj hydrolysis rau lactic acid monomer.2. Qhov kev txiav txim ntawm lactic acid monomer hauv cov kab mob txo qis thiab decomposes rau hauv carbon dioxide thiab dej.Biodegradable hnab tuaj yeem decomposed rau hauv carbon dioxide thiab dej hauv cov av ntuj lossis cov khoom siv compost rau 180 hnub yam tsis muaj kuab paug rau ib puag ncig.