I-Polylactic acid (PLA), eyaziwa nangokuthi i-polylactide, i-aliphatic polyester eyenziwe nge-dehydration polymerization ye-lactic acid ekhiqizwa ukuvutshelwa kwe-microbial njenge-monomer.Isebenzisa i-biomass evuselelekayo efana nommbila, umoba, nomdumbula njengezinto ezingavuthiwe, futhi inemithombo eminingi eminingi futhi ingavuseleleka.Inqubo yokukhiqiza i-polylactic acid inekhabhoni ephansi, ayihambisani nemvelo, futhi ayingcolisi kangako.Ngemuva kokusetshenziswa, imikhiqizo yayo ingafakwa umquba futhi yehliswe ukuze ibone umjikelezo emvelweni.Ngaphezu kwalokho, isetshenziswa kabanzi futhi inezindleko eziphansi kunamanye amapulasitiki ajwayelekile awonakele njenge-PBAT, i-PBS, ne-PHA.Ngakho-ke, isiphenduke into ebolayo esebenza kakhulu futhi ekhula ngokushesha kakhulu eminyakeni yamuva nje.
Ukuthuthukiswa kwe-polylactic acid kwaziswa kakhulu emhlabeni jikelele.Ngo-2019, izinhlelo zokusebenza eziyinhloko ze-PLA yomhlaba wonke ekufakweni nasekufakweni kwetafula, ukunakekelwa kwezokwelapha nokomuntu siqu, imikhiqizo yamafilimu, nezinye izimakethe zokugcina zibalelwa ku-66%, 28%, 2%, no-3% ngokulandelana.
Ukusetshenziswa kwemakethe kwe-polylactic acid kusabuswa i-tableware elahlayo kanye nokupakishwa kokudla okuneshelufu elifushane lempilo, kulandelwa i-tableware ehlala isikhathi eside noma esetshenziswa kaningi.Imikhiqizo yamafilimu apheshuliwe njengezikhwama zokuthenga kanye nemboza ngabo izithombo zezihlahla isekelwa ngokuqinile uhulumeni, futhi usayizi wemakethe ungase ube nokugxuma okukhulu esikhathini esifushane.Imakethe yemikhiqizo yefayibha elahlwayo njengamanabukeni namanabukeni e-sanitary ingase ikhuphuke kakhulu ngaphansi kwezidingo zemithethonqubo, kodwa ubuchwepheshe bayo obuyinhlanganisela busadinga impumelelo.Imikhiqizo ekhethekile, efana nokuphrinta kwe-3D ngenani elincane kodwa inani eliphakeme elingeziwe, nemikhiqizo edinga ukusetshenziswa kwesikhathi eside noma izinga lokushisa eliphezulu, njengezinto zikagesi nezisetshenziswa zemoto.
Kulinganiselwa ukuthi umthamo wonyaka wokukhiqiza we-polylactic acid emhlabeni wonke (ngaphandle kweChina) ungamathani ayi-150,000 futhi umphumela wonyaka ungamathani ayi-120,000 ngaphambi kuka-2015. Ngokwemakethe, kusukela ngo-2015 kuya ku-2020, imakethe yomhlaba wonke ye-polylactic acid izokhula ngokushesha. ngesilinganiso sokukhula sonyaka esiyinhlanganisela esingaba ngu-20%, futhi amathemba emakethe mahle.
Ngokwezifunda, i-United States iyisizinda esikhulu sokukhiqiza se-polylactic acid, ilandelwa yi-China, enesabelo semakethe sokukhiqiza esingu-14% ngo-2018. Mayelana nokusetshenziswa kwesifunda, i-United States isalokhu igcina isikhundla sayo esiholayo.Ngesikhathi esifanayo, liphinde libe ngumthumeli omkhulu kunawo wonke emhlabeni.Ngo-2018, imakethe yomhlaba wonke ye-polylactic acid (PLA) yalinganiselwa ku-$659 million.Njengepulasitiki ewohlokayo esebenza kahle kakhulu.Abangaphakathi emakethe banethemba ngemakethe yesikhathi esizayo
Isikhathi sokuthumela: Dec-17-2021