Kodi PLA Biodegradable?
•Polylactic acid, yomwe imadziwikanso kuti PLA, yakhalapo kwa zaka zambiri.Komabe, opanga akuluakulu a PLA angolowa pamsika posachedwa atapeza ndalama kuchokera kumakampani akuluakulu omwe akufuna kusintha mapulasitiki opangira.Ndiye, kodi PLA imatha kuwonongeka?
•Ngakhale yankho silili losavuta, tinaganiza zopereka kufotokozera ndikulimbikitsanso kuwerenga kwa omwe akufuna.PLA si biodegradable, koma ndi degradable.Ma enzyme omwe amatha kuwononga PLA sapezeka kawirikawiri m'chilengedwe.Proteinase K ndi puloteni yomwe imayambitsa kuwonongeka kwa PLA kudzera mu hydrolysis.Ofufuza monga Williams mu 1981 ndi Tsuji ndi Miyauchi mu 2001 adafufuza ngati PLA ikhoza kuwonongeka.Zotsatira zawo zimakambidwa m'buku la Biomaterials Science: An Introduction to Medical Materials ndipo zaperekedwa pamsonkhano wa European Biomaterials Society.Malinga ndi magwero awa, PLA imayendetsedwa makamaka ndi hydrolysis, popanda othandizira aliwonse achilengedwe.Ngakhale anthu ambiri angaganize kuti PLA ndi biodegradable, ndikofunika kuzindikira izi.
•M'malo mwake, hydrolysis ya PLA yopangidwa ndi proteinase K ndiyosowa kwambiri kotero kuti sikofunikira kuti tikambiranenso mu sayansi ya biomaterial.Tikukhulupirira kuti izi zimveketsa bwino nkhani za PLA biodegradability ndipo tipitiliza kuyesetsa kukupatsirani mayankho abwino kwambiri pazosowa zanu zapulasitiki zomwe sizingawononge chilengedwe komanso zowonongeka.
In mapeto:
PLA ndi pulasitiki yosawonongeka yomwe imagwiritsidwa ntchito kwambiri pazinthu zatsiku ndi tsiku monga zikwama zotayidwa ndi makapu.Komabe, zimatha kusokoneza m'malo opangira kompositi kapena ma anaerobic digestion, zomwe zimapangitsa kuwonongeka kwachilengedwe kukhala kovuta.Kafukufuku watsimikizira kuti PLA imawononga pang'ono m'malo am'madzi.
Nthawi yotumiza: Nov-01-2023
