I-Polylactic acid (PLA) iyinoveli esekelwe ku-bio futhi ivuselelwe okonakaliswa kwempahla eyenziwe ngesitashi sezinto ezingavuthiwe ezitholakala ezinsizeni zezitshalo ezivuselelekayo njengommbila nomdumbula.
Izinto ezisetshenziswayo zesitashi ziyashiswa ukuze kutholwe i-glucose, esuke ivutshelwa ngezinhlobo ezithile ukuze kukhiqizwe i-lactic acid emsulwa. Indwangu yommbila ye-PLA engalukiwe isuke ihlanganiswa ngamakhemikhali ukuze kuhlanganiswe isisindo samangqamuzana esithile se-polylactic acid. Ine-biodegradability enhle. Ngemuva kokusetshenziswa, ngaphansi kwezimo ezithile, kungonakalisa ngokuphelele ama-microorganisms emvelweni, ukukhiqiza i-carbon dioxide namanzi ngaphandle kokungcolisa imvelo. Lokhu kuzuzisa kakhulu ekuvikeleni imvelo. Indwangu engalukiwe ye-PLA ibhekwa njengento enobungani bemvelo.
I-Polylactic acid fiber yenziwa ngemikhiqizo yezolimo enesitashi enjengommbila, ukolweni, namabhitrudi ashukela, avutshelwa ukukhiqiza i-lactic acid, bese incibilika futhi incibilike ngokuphothwa. I-Polylactic acid fiber iyifayibha yokwenziwa engatshalwa futhi kulula ukuyikhulisa. Imfucuza ingonakaliswa ngokwemvelo.
Izici zemicu ye-polylactic acid
Ukusebenza kwe-Biodegradable
Izinto zokusetshenziswa ze-polylactic acid fibre ziningi futhi zigaywa kabusha. Imicu ye-Polylactic acid inokubola okuhle kwe-biodegradability futhi ingabola ngokuphelele ibe yi-carbon dioxide kanye ne-H2O ngokwemvelo ngemva kokulahlwa. Zombili zingaba izinto zokusetshenziswa zesitashi se-lactic acid nge-photosynthesis. Ngemuva kweminyaka engu-2-3 enhlabathini, amandla emicu ye-PLA azonyamalala. Uma igqitshwe kanye neminye imfucuza yezinto eziphilayo, izobola phakathi nezinyanga ezimbalwa. Ngaphezu kwalokho, i-polylactic acid i-hydrolyzed ibe yi-lactic acid nge-asidi noma ama-enzyme emzimbeni womuntu. I-Lactic acid iwumkhiqizo wamaseli futhi ingabuye igaywe ngama-enzyme ukuze ikhiqize isikhutha namanzi. Ngakho-ke, imicu ye-polylactic acid nayo ine-biocompatibility enhle.
Ukusebenza kokumuncwa umswakama
Imicu ye-PLA inokumunca kahle umswakama kanye nokuhamba kahle, okufana nokuwohloka. Ukusebenza kokumunca umswakama nakho kuhlobene ne-morphology kanye nesakhiwo semicu. I-longitudinal surface ye-PLA fibers inamachashaza angajwayelekile kanye nemivimbo engaqhubeki, izimbotshana noma imifantu, engenza kalula imiphumela ye-capillary futhi ibonise ukumuncwa okuhle okuyisisekelo, ukuthambisa kanye nezindawo zokusabalalisa amanzi.
Okunye ukusebenza
Inokuvutha okuphansi kanye nokuhlehla komlilo okuthile; Ukusebenza kokudaya kubi kakhulu kunemicu yendwangu evamile, ayimelani ne-asidi ne-alkali, futhi kulula ukuyi-hydrolyze. Ngesikhathi senqubo yokudaya, ukunakwa okukhethekile kufanele kukhokhwe ethonyeni le-acidity ne-alkalinity; Ukubekezelela okuqinile emisebeni ye-ultraviolet, kodwa kujwayele ukuchithwa kwezithombe; Ngemuva kwamahora angama-500 wokuchayeka ngaphandle, amandla emicu ye-PLA angagcinwa cishe ku-55% futhi abe nokumelana nesimo sezulu esihle.
Izinto ezisetshenziswayo zokukhiqiza i-polylactic acid fiber (PLA) yi-lactic acid, eyenziwe ngesitashi sombila, ngakho lolu hlobo lwefiber lubizwa nangokuthi i-corn fiber. Ingenziwa ngokuvubela ama-beet ashukela noma okusanhlamvu nge-glucose ukuze kwehliswe izindleko zokulungisa ama-polymer e-lactic acid. Isisindo samangqamuzana aphezulu i-polylactic acid ingatholakala ngokusebenzisa i-chemical polymerization ye-lactic acid cyclic dimers noma i-polymerization eqondile ye-lactic acid.
Izici zemicu ye-polylactic acid
Imikhiqizo eyenziwe nge-polylactic acid inokuvumelana okuhle kwe-biocompatibility, i-bioabsorbability, i-antibacterial kanye ne-flame retadancy, futhi i-PLA inokumelana nokushisa kuma-polymer we-thermoplastic awonakalayo.
I-Polylactic acid fiber ingabola ibe yi-carbon dioxide namanzi emhlabathini noma emanzini olwandle. Uma ushisiwe, awukhiphi amagesi anobuthi futhi awubangeli ukungcola. Iwumucu oqhubekayo wemvelo. Indwangu yayo izwakala iyinhle, ine-drape enhle, imelana nemisebe ye-UV, inokuvutha okuphansi, nokusebenza okuhle kakhulu kokucubungula. Ifanele imfashini ehlukahlukene, izingubo zokungcebeleka, izimpahla zezemidlalo, nemikhiqizo yenhlanzeko, futhi inamathemba abanzi wokufaka isicelo.
Ukusetshenziswa kwe-polylactic acid fibers
Izici ezingokomzimba zeIndwangu yommbila ye-PLA engalukiwe
Ikakhulukazi emkhakheni we-biomedicine, inamathemba okusebenza abanzi kulezi zici ezine ezilandelayo.
1. Umthungo wokuhlinza
Imicu ye-Polylactic acid (PLA) kanye nama-copolymers awo angasetshenziswa njengezinto zokuhlinza ukuze kuthuthukiswe ukuphulukiswa kwesilonda kanye nokuwohloka okulandelayo nokumuncwa, njengoba inokubola nokumuncwa kwe-vivo. Idatha yokuhlinzwa ye-suture elindelekile kufanele ibe nokunwetshwa okuqinile kokuqala
Izinga lokuwohloka kwe-co lokuqina kanye nesikhathi sokuphola kwesilonda.
Eminyakeni yamuva, izingxoxo ziye zagxila ikakhulukazi ekubunjweni kwe-polylactic acid yesisindo samangqamuzana aphezulu, ukuthuthukiswa kobuchwepheshe bokucubungula i-suture, kanye nokuthuthukiswa kwamandla omshini we-suture; Ukwakhiwa kwama-polymers e-photoactive i-PDLA ne-PLLA kufaneleka kakhulu kuma-sutures okuhlinzwa, njengoba i-semicrystalline PDLA ne-PLLA inamandla amakhulu omshini, isilinganiso esikhulu sokuqina, kanye nezinga lokufinyeza eliphansi kune-amorphous PDLA; Multi functional suture ukuhlela.
2. Impahla yangaphakathi engashintshi
Indwangu engalukiwe ye-PLA ingasetshenziswa ukuthuthukisa i-polylactic acid, ithuthukise kakhulu amandla okuqala ezinto ezingaguquki.
3. Hlela izinto zobunjiniyela
Imicu ye-polylactic acid ingasetshenziswa njengezinto zokuluka noma ukuhlela izisekelo zobunjiniyela. Ngokulungisa i-microenvironment ye-scaffold, ukukhula kweseli nokusebenza kungalawulwa, bese kumenyezelwa ukuhlela okushintshekayo, izingxenye, noma i-in vitro ukuze kufezwe umgomo wokulungisa nokwakha kabusha imisebenzi engekho.
4. Ifilimu yokuvuselela ngezikhathi ezithile
I-Periodontal membrane iyithuluzi lokuqondisa nokuhlela ukuvuselelwa. Isebenzisa i-membrane njengesithiyo sokugwema nokulawula ukuthintana phakathi kwezinsini nokubukeka kwempande yezinyo, ikhulula isikhala sokukhula kwemigqa ye-periosteal kanye / noma amangqamuzana amathambo e-alveolar, ngaleyo ndlela kufinyelele umphumela wokubuyisela wesifo se-periodontal. Usebenzisa imicu ye-polylactic acid njengezinto zokusetshenziswa, weluka amashidi okuvuselela i-periodontal ukuze amunce umuntu.
5. I-Neural conduit
6. Okunye
Ngenxa yezakhiwo zayo ezivelele zemishini kanye nokubola kwayo, imicu ye-polylactic acid ingasetshenziswa njengamanabukeni, amateyipu e-gauze, nezingubo zokusebenza ezilahlwayo. Imfucuza yabo ingahlukaniswa phakathi nezinyanga eziyisi-6 ngemva kokugqitshwa emhlabathini.
I-Dongguan Liansheng Nonwoven Fabric Co., Ltd., umkhiqizi wezindwangu ezingezona eziboshwe kanye nezindwangu ezingezona ezilukiwe, ufanelwe ukwethenjwa kwakho!
Isikhathi sokuthumela: Jun-13-2024