Lub hnab ntim degradable txhais tau tias degradable, tab sis lub hnab ntim degradable tau muab faib ua ob hom: degradable thiab tag nrho degradable.Cov hnab ntim khoom degradable xa mus rau kev ntxiv qee yam ntawm cov khoom ntxiv (xws li cov hmoov txhuv nplej siab, hloov cov hmoov txhuv nplej siab lossis lwm yam cellulose, photosensitizers, biodegraders, thiab lwm yam) degenerate.Cov hnab ntim khoom degradable yog xa mus rau cov hnab ntim yas uas tau degraded tag rau hauv dej thiab carbon dioxide.Lub hauv paus tseem ceeb ntawm cov khoom siv degradable no yog kev ua cov pob kws thiab cov qos yaj ywm rau hauv lactic acid, lossis PLA.
Polylactic acid (PLA) yog cov khoom siv biodegradable tshiab thiab rov ua dua tshiab.Siv cov hmoov txhuv nplej siab ua cov khoom siv raw, saccharification kom tau cov piam thaj, thiab tom qab ntawd fermenting qabzib thiab qee hom kom tau txais high-purity lactic acid, thiab ces synthesizing polylactic acid nrog ib qho hnyav molecular los ntawm cov tshuaj synthesis.Nws muaj biodegradability zoo.Tom qab siv, nws tuaj yeem degraded los ntawm cov kab mob hauv cov kab mob hauv cov xwm txheej tshwj xeeb los tsim cov pa roj carbon dioxide thiab dej, uas tsis ua phem rau ib puag ncig.Nws yog qhov zoo heev los tiv thaiv ib puag ncig thiab yog ib qho khoom siv zoo rau cov neeg ua haujlwm.
Tam sim no, cov khoom siv bio-based tseem ceeb ntawm lub hnab ntim khoom degradable yog tsim los ntawm PLA + PBAT, uas tuaj yeem decomposed tag nrho rau hauv dej thiab carbon dioxide nyob rau hauv 3-6 lub hlis nyob rau hauv composting tej yam kev mob (60-70 degrees), tsis muaj kuab paug. ib puag ncig.Vim li cas ntxiv PBAT, cov chaw tsim khoom lag luam ntawm cov khoom ntim hloov tau yooj yim, cov lus piav qhia hauv qab no yog PBAT adipic acid, 1,4-butanediol, terephthalic acid copolymer, ntau dhau yog biodegradable hluavtaws aliphatic thiab aromatic polymer Taiwan, PBAT muaj kev yooj yim heev, tuaj yeem ua haujlwm. zaj duab xis extrusion, tshuab ua, txheej thiab lwm yam ua.Lub hom phiaj ntawm kev sib xyaw PLA thiab PBAT yog txhawm rau txhim kho toughness, biodegradability thiab formability ntawm PLA.PLA thiab PBAT tsis sib haum nrog ib leeg, yog li xaiv tus neeg sib tw tsim nyog tuaj yeem txhim kho kev ua tau zoo ntawm PLA.
Post lub sij hawm: Jun-30-2022