BBCA polylactic acid uwe ọhụrụ ngwaahịa

Polylactic acid (PLA) bụ ụdị ihe ọhụrụ a na-emepụta site na polymerization ọzọ nke lactic acid sitere na starch ma ọ bụ gbaa ụka shuga. Ọ naghị eji mmanụ ala dị ka akụrụngwa, ma nwee njirimara nke nchebe gburugburu ebe obibi, nke na-adịghị egbu egbu, antibacterial, ire ọkụ na-ere ọkụ, ezigbo biocompatibility na biodegradability. Ọ bụ ihe ọhụrụ na-ekwe nkwa ịma jijiji ọnọdụ ọdịnala nke plastik dabere na mmanụ ala na eriri kemịkal n'ọdịnihu.

Polylactic acid na ngwaahịa ya nwere akụrụngwa anụ ahụ kwụsiri ike n'okpuru ọnọdụ okpomọkụ na iru mmiri nkịtị. Ọ bụ ihe na-emebi emebi kpamkpam, nke enwere ike ịmegharị ya. Mgbe a tụfuru ya, enwere ike imebi ya ka ọ bụrụ carbon dioxide na mmiri. Mgbe photosynthesis site na osisi, osisi nwere ike ịmịnye ya ọzọ wee banye n'ime gburugburu eke na-enweghị ngwụcha. Ọ bụ "ihe eji emegharị gburugburu ebe obibi nke narị afọ nke 21".

Isi njirimara bụ ndị a

(1) ebe enwere ike imeghari: tumadi sitere na ọka, nduku na ihe ubi starch ndi ozo, tinyere ahihia ihe ubi, wdg;

(2) biodegradation zuru oke: ahụ mmadụ nwere ike itinye ya na metabolized; na ngwaahịa na-kpamkpam degraded n'ime CO2 na H2O na ala ma ọ bụ oké osimiri mmiri mgbe a tụfuru na landfill n'ime otu afọ, na-aghọta na carbon okirikiri n'elu na n'ụzọ dị irè na-agbanwe gburugburu ebe obibi mmetọ nke mmanụ ala dabeere ihe;

(3) mmekọrịta ahụ mmadụ na nchekwa: akụrụngwa lactic acid dị n'ime ahụ mmadụ, PLA nwere ike metabolized ma tinye ya n'ahụ mmadụ, PLA bụ FDA kwadoro ihe ntinye mmadụ, bụ nke ejirila ya na ngalaba ahụike ruo ọtụtụ iri afọ;

(4) magburu onwe usoro: enwere ike ịhazi ya n'ọtụtụ ụzọ, dị ka extrusion, spinning, ịbịaru biaxial, ịkpụzi injection;

(5) nje nje na-egbu egbu na mgbochi nje: ọnụ ọgụgụ nje na-egbu egbu na mgbochi nke Candida albicans, Escherichia coli na Staphylococcus aureus ruru ihe karịrị 95%;

(6) ndagide ire ọkụ eke: nchekwa na ire ọkụ, obere anwụrụ ọkụ, enweghị anwụrụ ọkụ ojii na enweghị gas na-egbu egbu;

(7) magburu onwe gloss, nghọta, aka, UV-eguzogide, mmiri conductivity, dịghị mmiri nwetaghachi, wdg.

Enwere ike ime polylactic acid ka ọ bụrụ eriri polylactic acid, arụmọrụ ya dịkwa ka nke owu. Na mgbakwunye, polylactic acid nwere ọrụ yiri nke ahụ na ihe kemịkalụ izugbe dị ka polypropylene (PP), polyethylene (PE), eriri polyester (PET, PTT, PBT). Enwere ike ịhazi ya site na ịkpụzi injection, extrusion, spinning na usoro ndị ọzọ iji mee eriri, ihe nkiri, mpempe akwụkwọ na efere, jiri nwayọọ nwayọọ dochie eriri Petrochemical na plastik petroleum, a na-eji ya na uwe, nkwakọ ngwaahịa, ọrụ ugbo, ụlọ, akụkụ akpaaka, mbipụta 3D. , biomedicine na ọtụtụ ubi ndị ọzọ.