Kev Taw Qhia luv luv rau plaub pawg ntawm Biodegradable Materials

Tam sim no, nws tau muab faib ua plaub pawg: polylactic acid (PLA), polylactate (Phat) thiab polylactate (PBAT).

Polylactic acid: Nws yog ib qho ntawm feem ntau degradable plastics ua los ntawm lactic acid ua raw khoom. Cov txheej txheem ntau lawm ntawm polylactic acid yog tsis muaj kuab paug, thiab cov khoom yog biodegradable. Pov tseg polylactic acid 55 degree Qhov saum toj no compost los yog oxygen enrichment thiab microbial kev txiav txim yuav decomposed rau hauv carbon dioxide thiab dej, realizing lub natural material voj voog thiab tsis muaj kev cuam tshuam rau ib puag ncig. Tam sim no, lactide nplhaib-qhib polymerization tshuab yog tsuas yog siv rau zus tau tej cov polylactic acid. Ua ntej, lactic acid yog lub cev qhuav dej los tsim cov oligomers, tom qab ntawd cov polymer tau tawg los ua cov kua qaub acrylic, thiab tom qab ntawd lub nplhaib-qhib polymerization tsim cov kua qaub polylactic. Polylactic acid kuj muaj kev ruaj ntseg biosafety profile. Biodegradation. Nws muaj cov khoom siv kho tshuab zoo thiab kev ua haujlwm yooj yim, thiab siv dav hauv kev ntim khoom. Textile. Agricultural yas zaj duab xis thiab biomedical polymers. Qhov tsis zoo ntawm PLA yog qhov degradation tej yam kev mob hnyav. Txawm li cas los xij, vim yog tus nqi qis ntawm polylactic acid hauv biodegradable plastics, kev noj ntawm polylactic acid yog nyob rau hauv pem hauv ntej.

PBS: Cov khoom siv raw yog succinic acid thiab 11.4-butanediol shrinkage. PBS tau yooj yim hloov mus rau hauv carbon dioxide thiab dej los ntawm ntau yam kab mob los yog cov enzymes hauv cov xwm txheej, thiab yog biocompatible heev. Bioabsorbent thiab kub-resistant. PBS tuaj yeem siv rau ntim cov yeeb yaj kiab. Cov tais diav. Foam qhwv khoom. Lub raj mis txhua hnub. Lub raj mis. Cov ntaub ntawv yas. tshuaj tua kab, chiv, cov ntaub ntawv tso tawm qeeb thiab lwm yam teb. Vim muaj cov khoom siv tsawg tsawg ntawm succinic acid hauv Suav teb, kev tsim cov PBS derivatives PBAT thiab PBSA ua tau raws li qhov yuav tsum tau ua. Nws qhov kev ua tau zoo thiab nws qhov kev ua tau zoo thiab nws qhov kev ua tau zoo. PBS yog qhov zoo sib xws, tab sis kev ua haujlwm tsis zoo li PBS.

PBAT: Nws yog thermoplastic degradable yas. Fatty acids thiab butylene glycol feem ntau yog tsim los ntawm petrochemical lossis biological fermentation. Nws muaj zog ductility thiab tensile lub zog, nrog rau cov cua sov zoo thiab cuam tshuam tsis kam. PBAT muaj cov khoom ua yeeb yaj kiab zoo. Nws yog dav siv nyob rau hauv lub teb ntawm pov tseg ntim zaj duab xis thiab ua liaj ua teb zaj duab xis. PBAT muaj biodegradability zoo thiab yog ib qho ntawm cov khoom siv degradable tshaj plaws hauv kev tshawb fawb thiab kev lag luam ntawm cov yas degradable.

PHA: PHA degradable plastics suav nrog polyhydroxyalkanoate (PHA), poly3 hydroxybutyrate (PHB) thiab lwm pawg. PHA yog ib txoj kev degradation tshwj xeeb heev. PHA tuaj yeem degraded tag nrho hauv -hydroxybutyric acid hauv cov kab mob muaj sia tom qab siv. carbon dioxide thiab dej. Thermoplastic thiab thermoplastic tsis zoo, tab sis cov txheej txheem thermoplastic tsis ruaj khov.