I-Polylactic acid (i-PLA) yi-novel bio esekelwe kunye nezinto ezihlaziywayo zokuthotywa kwe-starch ekrwada ephuma kwimithombo yezityalo ezivuselelekayo ezifana nombona kunye ne-cassava.
Izinto zesitatshi ekrwada zihlanjululwa ukuze kufunyanwe iswekile, ethi emva koko ivundiswe ngeentlobo ezithile ukuvelisa iasidi ye-lactic ecocekileyo. I-PLA ifayibha yombona ilaphu elingaphothiweyo lize lidityaniswe ngokwemichiza ukuze lidibanise ubunzima obuthile bemolekyuli ye-polylactic acid. Inokonakala kwezinto eziphilayo. Emva kokusetyenziswa, phantsi kweemeko ezithile, inokutshatyalaliswa ngokupheleleyo ngama-microorganisms kwindalo, ukuvelisa i-carbon dioxide kunye namanzi ngaphandle kokungcolisa indalo. Oku kuluncedo kakhulu ekukhuseleni okusingqongileyo. Ilaphu le-PLA elingalukwanga lithathwa njengesixhobo sokusingqongileyo.
Ifiber yePolylactic acid yenziwe ngeemveliso zezolimo ezisisitatshi ezifana nombona, ingqolowa, kunye neswekile beet, ezibiliswayo ukuze zivelise iasidi ye-lactic, emva koko ishwabene kwaye inyibilike ngokusonta. I-Polylactic acid fiber yintsinga eyenziweyo enokuthi ityalwe kwaye kulula ukuyikhulisa. Inkunkuma inokuthotywa ngokwendalo.
Iimpawu zemicu ye-polylactic acid
Ukusebenza kwe-Biodegradable
I-Polylactic acid fiber izinto ekrwada zininzi kwaye ziyarisayikilishwa. Imicu ye-Polylactic acid ine-biodegradability elungileyo kwaye inokubola ngokupheleleyo ibe yi-carbon dioxide kunye ne-H2O kwindalo emva kokulahlwa. Zombini zinokuba yimathiriyeli ekrwada ye-lactic acid starch ngephotosynthesis. Emva kweminyaka engama-2-3 emhlabeni, amandla e-PLA fibers aya kunyamalala. Ukuba ingcwatywe kunye nenye inkunkuma ephilayo, iya kubola kwiinyanga ezimbalwa. Ukongeza, i-polylactic acid i-hydrolyzed kwi-lactic acid nge-asidi okanye i-enzymes emzimbeni womntu. Iasidi yeLactic yimveliso yemetabolism yeeseli kwaye inokuphinda ifakwe kwi-enzymes ukuvelisa ikharbon diokside kunye namanzi. Ngoko ke, iifiber ze-polylactic acid nazo zine-biocompatibility efanelekileyo.
Ukusebenza kokufunxa ukufuma
Iifiber ze-PLA zinokufunxa kakuhle ukufuma kunye nokuqhuba, okufana nokuthotywa. Ukusebenza kokufunxa ukufuma kukwanxulumene ne-morphology kunye nesakhiwo semicu. Umphezulu we-longitudinal we-PLA fibers unamabala angaqhelekanga kunye nemivimbo engapheliyo, i-pores okanye i-cracks, enokuthi yenze lula imiphumo ye-capillary kwaye ibonise i-core core absorption, i-moisturizing kunye neempawu zokusasazwa kwamanzi.
Okunye ukusebenza
Inokutsha okuphantsi kunye nokubuyiswa okuthile komlilo; Ukusebenza kokudaya kubi ngakumbi kunemicu ye-textile eqhelekileyo, ayixhathisi kwi-asidi kunye ne-alkali, kwaye kulula ukuyi-hydrolyze. Ngexesha lenkqubo yokudaya, ingqalelo ekhethekileyo kufuneka ihlawulwe kwimpembelelo ye-acidity kunye ne-alkalinity; Ukunyamezela okunamandla kwimitha ye-ultraviolet, kodwa kukulungele ukutshatyalaliswa kweefoto; Emva kweeyure ezingama-500 zokuvezwa ngaphandle, amandla e-PLA fibers anokugcinwa malunga ne-55% kwaye abe nokumelana nemozulu elungileyo.
Izinto eziluhlaza zokuvelisa i-polylactic acid fiber (PLA) yi-lactic acid, eyenziwa kwi-corn starch, ngoko olu hlobo lwefiber lukwabizwa ngokuba yi-corn fiber. Inokwenziwa ngokubilisa iibhithi zeswekile okanye iinkozo ngeglucose ukunciphisa iindleko zokulungiselela iipolima ze-lactic acid. Ubunzima obuphezulu bemolekyuli i-polylactic acid inokufumaneka ngokusebenzisa i-chemical polymerization ye-lactic acid cyclic dimers okanye i-polymerization ngqo ye-lactic acid.
Iimpawu ze-polylactic acid fibers
Iimveliso ezenziwe nge-polylactic acid zine-biocompatibility efanelekileyo, i-bioabsorbability, i-antibacterial kunye ne-flame retardancy, kwaye i-PLA inokumelana nobushushu kwiipolymers ze-thermoplastic ezonakeleyo.
I-Polylactic acid fiber inokubola ibe yi-carbon dioxide kunye namanzi emhlabeni okanye emanzini olwandle. Xa itshiswa, ayikhuphi iigesi ezinetyhefu kwaye ayibangeli ungcoliseko. Lusinga oluzinzileyo lwendalo. Ilaphu layo livakala lilungile, line-drape elungileyo, liyaxhathisa kwimitha ye-UV, linokutsha okuphantsi, kunye nokusebenza okugqwesileyo. Ifanelekile kwiifashoni ezahlukeneyo, iimpahla zokuzonwabisa, iimpahla zemidlalo, kunye neemveliso zococeko, kwaye inethemba elibanzi lokusetyenziswa.
Ukusetyenziswa kwe-polylactic acid fibers
Iimpawu ezibonakalayo zeIlaphu le-PLA lombona elingaphothiweyo
Ngokukodwa kwintsimi ye-biomedicine, inamathemba okusebenza ngokubanzi kule miba ilandelayo ine.
1. Umthungo wotyando
Iifiber ze-Polylactic acid (PLA) kunye ne-copolymers yazo zingasetyenziswa njenge-sutures yokuhlinzwa ukukhuthaza ukuphulukiswa kwenxeba kunye nokuthotywa okulandelayo kunye nokufunxa, njengoko banokuguquguquka kwezinto eziphilayo kunye nokuxhamla kwi-vivo. Idatha elindelekileyo yotyando ye-suture kufuneka ibe nokuzolula okuqinileyo kokuqala
Isantya sokuthotywa kokuqina kunye nexesha lokuphola kwenxeba.
Kwiminyaka yakutshanje, iingxoxo zigxininise kakhulu ekubunjweni kwe-polylactic acid ephezulu ye-molecular weight, ukuphuculwa kweteknoloji yokucubungula i-suture, kunye nokuphucula amandla omatshini we-suture; Ukubunjwa kweepolymers ze-photoactive ze-PDLA kunye ne-PLLA zifanelekile ngakumbi kwi-sutures yokuhlinzwa, njengoko i-semicrystalline PDLA kunye ne-PLLA zinamandla amakhulu omatshini, umlinganiselo omkhulu we-tensile, kunye nesantya esincinci sokunciphisa kune-amorphous PDLA; Isicwangciso se-suture esisebenzayo ezininzi.
2. Izixhobo ezimiselweyo zangaphakathi
Ilaphu le-PLA elingalukwanga lingasetyenziselwa ukuphucula i-polylactic acid, ukuphucula kakhulu amandla okuqala ezinto ezisisigxina.
3. Lungiselela izixhobo zobunjineli
Iintsinga ze-Polylactic acid zinokusetyenziswa njengezinto zokuluka okanye ukulungisa izixhaso zobunjineli. Ngokulungelelanisa i-microenvironment ye-scaffold, ukukhula kweeseli kunye nomsebenzi kunokulawulwa, kwaye ke amalungiselelo okutshintshwa, amacandelo, okanye izixhobo ze-in vitro zinokubhengezwa ukufezekisa injongo yokulungisa nokuvuselela imisebenzi engekhoyo.
4. Ifilimu yokuhlaziya iperiodontal
I-Membrane yePeriodontal sisixhobo sokukhokela kunye nokulungiselela ukuvuselelwa. Isebenzisa i-membrane njengesithintelo sokuphepha kunye nokulawula ukudibanisa phakathi kwe-gum kunye nokubonakala kweengcambu zezinyo, ukukhulula indawo yokukhula kwe-periosteal ligaments kunye / okanye iiseli zethambo ze-alveolar, ngaloo ndlela ufezekise umphumo wokubuyisela isifo se-periodontal. Ukusebenzisa iintsinga ze-polylactic acid njengezinto ezikrwada, weluka amaphepha okuhlaziya i-periodontal ukuze afunxe.
5. I-Neural conduit
6. Okunye
Ngenxa yeempawu zayo ezibalaseleyo zoomatshini kunye ne-biodegradability, iifayibha ze-polylactic acid zingasetyenziswa njengama-diapers, iiteyipu ze-gauze, kunye neempahla zokusebenza ezilahlwayo. Inkunkuma yabo inokwahlulwa kwiinyanga ezi-6 emva kokungcwatywa emhlabeni.
Dongguan Liansheng Nonwoven Fabric Co., Ltd., umenzi weempahla ezingalukiweyo kunye neendwangu ezingabonakaliyo, ufanelekile ukuthembela kwakho!
Ixesha lokuposa: Jun-13-2024