Polylactic acid (PLA) yog ib qho tshiab biobased thiab rov ua dua cov khoom degradation ua los ntawm cov hmoov txhuv nplej siab raw cov ntaub ntawv tau los ntawm cov khoom siv cog 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 non-woven npuag yog suav hais tias yog cov khoom siv hauv 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.
Cov khoom ntawm polylactic acid fibers
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 yam ntxwv ntawm polylactic acid fibers
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.
Kev siv cov polylactic acid fibers
Lub cev muaj zog ntawmPLA pob kws fiber ntau tsis woven ntaub
Tshwj xeeb tshaj yog nyob rau hauv lub teb ntawm biomedicine, nws muaj dav daim ntawv thov prospects nyob rau hauv plaub yam nram qab no.
1. Kev phais suture
Polylactic acid fibers (PLA) thiab lawv cov copolymer tuaj yeem siv los ua kev phais mob los txhawb kev kho qhov txhab thiab tom qab degradation thiab nqus, vim lawv muaj biodegradability thiab absorbability hauv vivo. Cov ntaub ntawv phais phais suture yuav tsum muaj zog pib ncab
Lub co degradation tus nqi ntawm kev siv thiab lub sijhawm kho qhov txhab.
Nyob rau hauv xyoo tas los no, kev sib tham tau tsom mus rau qhov muaj pes tsawg leeg ntawm qhov hnyav molecular polylactic acid, kev txhim kho ntawm kev siv tshuab suture, thiab kev txhim kho ntawm suture mechanical zog; Cov muaj pes tsawg leeg ntawm photoactive polymers PDLA thiab PLLA yog tsim nyog rau kev phais sutures, raws li semi crystalline PDLA thiab PLLA muaj zog txhua yam, ntau dua tensile piv, thiab luv luv tus nqi tshaj amorphous PDLA; Multifunctional suture npaj.
2. Cov khoom siv ruaj khov sab hauv
PLA non-woven npuag tuaj yeem siv los txhim kho polylactic acid, txhim kho thawj lub zog ntawm cov ntaub ntawv ruaj khov.
3. Npaj cov khoom siv engineering
Polylactic acid fibers tuaj yeem siv los ua cov ntaub ntawv rau kev xaws los yog kev txhawb nqa engineering. Los ntawm kev kho qhov microenvironment ntawm scaffold, kev loj hlob ntawm tes thiab kev ua haujlwm tuaj yeem tswj tau, thiab tom qab ntawd hloov cov kev npaj, cov khoom siv, lossis cov khoom siv hauv vitro tuaj yeem tshaj tawm kom ua tiav lub hom phiaj ntawm kev kho thiab rov tsim kho cov haujlwm uas ploj lawm.
4. Periodontal regeneration zaj duab xis
Periodontal membrane yog ib qho cuab yeej rau kev taw qhia thiab kev tsim kho dua tshiab. Nws siv ib daim nyias nyias los tiv thaiv thiab tswj kev sib cuag ntawm cov pos hniav thiab cov tsos ntawm cov hniav hauv paus hniav, tso qhov chaw rau kev loj hlob ntawm periosteal ligaments thiab / los yog alveolar pob txha hlwb, yog li ua tiav cov nyhuv rov qab ntawm cov kab mob periodontal. Siv polylactic acid fibers ua raw khoom, weave periodontal regeneration nplooj ntawv rau tib neeg nqus.
5. Neural conduit
6. Lwm yam
Vim nws cov khoom siv zoo heev thiab biodegradability, polylactic acid fibers tuaj yeem siv los ua cov ntaub qhwv, ntaub nplaum, thiab cov khaub ncaws ua haujlwm pov tseg. Lawv cov khib nyiab tuaj yeem sib txawv hauv 6 lub hlis tom qab muab faus rau hauv av.
Dongguan Liansheng Nonwoven Fabric Co., Ltd., cov chaw tsim khoom ntawm cov ntaub ntawv tsis-woven thiab non-woven fabrics, tsim nyog ntawm koj txoj kev ntseeg siab!
Lub sij hawm xa tuaj: Jun-13-2024