Polylactic acid (PLA)yog ib qho tshiab bio raws li thiab txuas ntxiv degradation cov ntaub ntawv ua los ntawm cov hmoov txhuv nplej siab raw cov ntaub ntawv muab los ntawm cov nroj tsuag txuas dua tshiab xws li pob kws thiab cassava.
Cov hmoov txhuv nplej siab raw cov ntaub ntawv yog saccharified kom tau cov piam thaj, uas yog tom qab ntawd fermented nrog tej hom los tsim high-purity lactic acid. PLA pob kws fiber ntau uas tsis yog-woven npuag yog tom qab ntawd cov tshuaj sib xyaw ua ke los ua ke ib qho hnyav molecular ntawm polylactic acid. Nws muaj biodegradability zoo. Tom qab siv, nyob rau hauv tej yam kev mob, nws yuav degraded tag nrho los ntawm microorganisms nyob rau hauv cov xwm, ua carbon dioxide thiab dej tsis muaj paug ib puag ncig. Qhov no muaj txiaj ntsig zoo rau kev tiv thaiv ib puag ncig.PLA tsis-woven npuagyog suav hais tias yog ib qho khoom siv rau ib puag ncig.
Polylactic acid fiber yog tsim los ntawm cov khoom ua liaj ua teb starchy xws li pob kws, nplej, thiab qab zib beets, uas yog fermented los tsim lactic acid, thiab ces shrunk thiab melted los ntawm spinning. Polylactic acid fiber yog cov khoom siv hluavtaws uas tuaj yeem cog thiab cog tau yooj yim. Cov khib nyiab tuaj yeem raug degraded hauv qhov xwm txheej.
Biodegradable kev ua tau zoo.
Polylactic acid fiber raw cov ntaub ntawv muaj ntau thiab recyclable. Polylactic acid fibers muaj biodegradability zoo thiab tuaj yeem decomposed rau hauv carbon dioxide thiab H2O hauv xwm tom qab muab pov tseg. Ob leeg tuaj yeem dhau los ua cov ntaub ntawv raw rau lactic acid starch los ntawm photosynthesis. Tom qab 2-3 xyoos hauv av, lub zog ntawm PLA fibers yuav ploj mus. Yog tias faus ua ke nrog lwm cov khoom pov tseg, nws yuav decompose nyob rau hauv ob peb lub hlis. Tsis tas li ntawd, polylactic acid yog hydrolyzed rau hauv lactic acid los ntawm acid lossis enzymes hauv tib neeg lub cev. Lactic acid yog cov khoom lag luam metabolic ntawm cov hlwb thiab tuaj yeem txuas ntxiv metabolized los ntawm enzymes los tsim carbon dioxide thiab dej. Yog li ntawd, polylactic acid fibers kuj muaj biocompatibility zoo.
Moisture absorption kev ua haujlwm
PLA fibers muaj qhov nqus dej zoo thiab ua tau zoo, zoo ib yam li degradability. Qhov kev nqus dej noo kuj tseem cuam tshuam nrog morphology thiab cov qauv ntawm fibers. Qhov ntev ntawm PLA fibers muaj qhov tsis sib xws thiab cov kab txaij tsis tu ncua, qhov pores lossis tawg, uas tuaj yeem tsim cov teebmeem capillary yooj yim thiab nthuav tawm cov tub ntxhais zoo nqus, moisturizing thiab dej diffusion zog.
Lwm yam kev ua haujlwm
Nws muaj flammability tsawg thiab tej nplaim retardancy; Kev ua haujlwm dyeing yog qhov phem tshaj li cov ntaub ntawv zoo tib yam, tsis tiv taus cov kua qaub thiab alkali, thiab yooj yim rau hydrolyze. Thaum lub sij hawm dyeing txheej txheem yuav tsum tau them tshwj xeeb mloog mus rau lub acidity thiab alkalinity; Muaj zog kam rau ultraviolet hluav taws xob, tab sis nquag mus rau photodegradation; Tom qab 500 teev ntawm kev tawm sab nraum zoov, lub zog ntawm PLA fibers tuaj yeem khaws cia nyob ib ncig ntawm 55% thiab muaj huab cua tsis zoo.
Cov khoom siv raw rau kev tsim cov polylactic acid fiber (PLA) yog lactic acid, uas yog tsim los ntawm pob kws hmoov txhuv nplej siab, yog li hom fiber ntau no kuj hu ua pob kws fiber. Nws tuaj yeem ua los ntawm fermenting qab zib beets los yog nplej nrog piam thaj kom txo tus nqi ntawm kev npaj lactic acid polymers. High molecular hnyav polylactic acid tuaj yeem tau los ntawm cov tshuaj polymerization ntawm lactic acid cyclic dimers lossis ncaj qha polymerization ntawm lactic acid.
Cov khoom tsim los ntawm polylactic acid muaj biocompatibility zoo, bioabsorbability, antibacterial thiab nplaim retardancy, thiab PLA muaj cua sov kuj nyob rau hauv degradable thermoplastic polymers.
Polylactic acid fiber tuaj yeem decomposed rau hauv carbon dioxide thiab dej hauv av lossis dej hiav txwv. Thaum hlawv, nws tsis tso cov pa phem thiab tsis ua rau muaj kuab paug. Nws yog ib qho ruaj khov ecological fiber. Nws cov ntaub zoo zoo, muaj drape zoo, tiv taus UV rays, tsis tshua muaj nplaim taws, thiab kev ua haujlwm zoo heev. Nws yog haum rau ntau yam zam, leisure khaub ncaws, cov khoom ua si, thiab cov khoom siv tu cev, thiab muaj daim ntawv thov dav dav.
Post lub sij hawm: May-23-2024