Asiti ea Polylactic ke ntho e ka senyehang habonolo ebile ke e 'ngoe ea lisebelisoa tse tšepisang tsa fiber lekholong la bo21 la lilemo.Polylactic acid (PLA)ha e teng ka tlhaho mme e hloka motsoako oa maiketsetso. lactic acid e tala e belisoa ho tsoa lijalong tse kang koro, sugar beet, cassava, poone le manyolo a tlhaho. Polylactic acid fibers, e tsejoang hape e le likhoele tsa poone, e ka fumanoa ka ho ohla.
Nts'etsopele ea likhoele tsa polylactic acid
Lactic acid e fumanoa ka yogurt. Hamorao, bo-rasaense ba ile ba fumana hore asiti e hlahisoang ke ho sisinyeha ha mesifa ea liphoofolo le batho ke lactic acid. Ho qaptjoa ha DuPont Corporation (moqapi oa nylon) e bile eena oa pele oa ho sebelisa li-polymer tsa lactic acid ho lokisa thepa ea polylactic acid polymer ka laboratoring.
Patlisiso le nts'etsopele ea likhoele tsa polylactic acid li na le nalane ea lilemo tse fetang halofo ea lekholo. Cyanamid, k'hamphani ea Amerika, e ile ea hlahisa li-sutures tse monyang acid ea polylactic ka bo-1960. Ka 1989, Setsi sa Japane sa Zhong Fang le Shimadzu Manufacturing Institute se ile sa sebelisana ho hlahisa fiber e hloekileng ea polylactic acid (Lacton TM) le motsoako oa eona le likhoele tsa tlhaho (Corn Fiber TM), e ileng ea bontšoa Lipapaling tsa Mariha tsa Nagano tsa 1998; Unijica Corporation ea Japane e ile ea hlahisa polylactic acid filament le spunbond nonwoven fabric (Terramac TM) ka 2000. Cargill Dow Polymers (CDP) United States (eo hona joale e leng NatureWorks) e ile ea lokolla letoto la lihlahisoa (IngeoTM) tse koahelang polylactic acid resins, fibers, le lifilimi ka 2003 ho hlahisa letoto la Trevirange le laesense ea TM TM ea Trevioven Jeremane. masela a sebelisoang masimong a kang likoloi, masela a lapeng, le bohloeki.
Ts'ebetso le ts'ebeliso ea likhoele tsa polylactic acid
Hajoale, masela a tloaelehileng a PLA a sa lohiloeng a entsoe ka bohloeki bo phahameng ba L-polylactic acid (PLLA) e le lisebelisoa tse tala, a sebelisa litšoaneleho tsa eona tse phahameng tsa crystallinity le sebopeho, 'me a lokiselitsoe ka mekhoa e fapaneng ea ho ohla (ho qhibiliha ho ohia, ho ohia ka metsi, ho ohla ho omileng, ho ohia ka metsi o omileng, ho ohla ha electrostatic, joalo-joalo). Har'a tsona, ho qhibiliha li-spun polylactic acid fibers (likhoele tse telele, likhoele tse khutšoanyane) li ka sebelisoa masimong a liaparo, masela a lapeng, joalo-joalo Thepa ea tlhahiso le ts'ebetso e tšoana le polyester, e nang le spinnability e ntle le ts'ebetso e itekanetseng. Ka mor'a phetoho e nepahetseng, li-fiber tsa polylactic acid li ka finyella matla a phahameng a ho thibela lelakabe (ho itima ka boeona) le thepa ea tlhaho ea antibacterial. Leha ho le joalo, melt spun PLA fiber e ntse e na le sebaka sa ho ntlafatsa matla a mochini, botsitso ba mocheso o phahameng, ho tiea le ho hanyetsa botsofali.
Ho ohla ka metsi, ho ohla ho ommeng, ho ohla ho ommeng ka metsi, le electrospinning ea polylactic acid fibers (li-membranes) li sebelisoa haholo-holo lefapheng la biomedical. Lihlahisoa tse emelang li kenyelletsa li-sutures tse monyang matla a phahameng, bajari ba lithethefatsi, li-membrane tsa anti adhesion, letlalo la maiketsetso, scaffolds tsa boenjiniere ba lisele, jj.
Ka tlhokahalo e ntseng e eketseha ea masela a sa lohiloeng a lahloang a bongaka, bohloeki, ho sefa, mokhabiso le masimo a mang, masela a sa lohiloeng a polylactic acid le ona a fetohile e 'ngoe ea libaka tsa lipatlisiso le nts'etsopele.
Lilemong tsa bo-1990, Univesithi ea Tennessee e United States e ile ea qala ho ithuta ka polylactic acid spunbond 'me ea qhibilihisa masela a sa lohuoang. Ka mor'a moo, Zhongfang ea Japane e ile ea etsa masela a polylactic acid a spunbond a sa lohuoang bakeng sa tšebeliso ea temo, ha k'hamphani ea Fora ea Fibreweb e ile ea etsa polylactic acid spunbond, masela a sa lohuoang a qhibilihisitsoeng, le meaho e nang le likarolo tse ngata (Deposita TM). Har'a tsona, lesela la lesela la spunbond nonwoven le fana ka ts'ehetso ea mochini haholo, ha lesela le qhibilihang le sa lohuoang le lesela la spunbond le sa lohoeng ka kopanelo le fana ka mokoallo, papatso, filtration le litlamorao tsa ho kenya letsoho.
Domestic Tongji University, Shanghai Tongjieliang Biomaterials Co., Ltd., Hengtian Changjiang Biomaterials Co., Ltd. le likarolo tse ling li atlehile ho etsa masela a sa lohuoang joalo ka viscose e ohliloeng, e ohliloeng, e bilikang e chesang, moea o chesang, joalo-joalo nts'etsopele ea likhoele tse kopaneng bakeng sa lihlahisoa tse sa lohoeng, tse sebelisoang bakeng sa lihlahisoa tse sa lohoeng, tse sebelisoang bakeng sa lihlahisoa tse sa lohoeng le tse sa lohoeng. li-napkins tsa bohloeki le li-diaper, hammoho le mask a sefahleho, mekotla ea tee, lisebelisoa tsa ho hloekisa moea le metsi le lihlahisoa tse ling.
Polylactic acid fiber e khothalelitsoe haholo le ho sebelisoa ka har'a makoloi a kahare, mekotla ea lisakerete le libakeng tse ling ka lebaka la mohloli oa eona oa tlhaho, biodegradability le botsoalle ba tikoloho.
Litšobotsi tsa fiber ea polylactic acid
E 'ngoe ea melemo e tsebahalang haholo ea li-fiber tsa polylactic acid ke bokhoni ba tsona ba ho senya kapa ho monya 'meleng. Tlas'a maemo a tloaelehileng a manyolo, boemo ba biodegradation bo tlameha ho lekanyetsoa, 'me lihlahisoa tse senyehang ke metsi le carbon dioxide. Likhoele tse tloaelehileng tsa asiti ea polylactic ho hydrolyze butle kapa ho thata ho lemoha ts'ebelisong e tloaelehileng kapa libakeng tse ngata tsa tlhaho. Ka mohlala, haeba e patoa mobung oa tlhaho ka selemo, ha e le hantle ha e fokotsehe, empa tlas'a maemo a tloaelehileng a mocheso oa composting, e senya nako e ka etsang beke.
Ho senyeha le ho monya ha li-fiber tsa polylactic acid ka har'a vivo ho angoa haholo ke crystallinity ea tsona. Liteko tsa ho senyeha ha in vitro li bontšitse hore li-fiber tse phahameng tsa crystallinity polylactic acid li ntse li boloka sebōpeho sa tsona le matla a ka bang 80% ka mor'a lilemo tse 5.3, 'me li ka nka lilemo tse 40-50 ho senya ka ho feletseng.
Boqapi le katoloso ea likhoele tsa acid ea polylactic
Joalo ka mofuta oa fiber ea lik'hemik'hale e ntlafalitsoeng le ho hlahisoa ka nako e fetang halofo ea lekholo la lilemo, ts'ebeliso ea 'nete ea polylactic acid e ntse e le ka tlase ho sekete sa fiber ea polyester. Le hoja ntlha ea litšenyehelo e le ea pele, ts'ebetso ea eona e ke ke ea hlokomolohuoa. Phetoho ke mokhoa oa ho hlahisa likhoele tsa polylactic acid.
China ke mohlahisi ea ka sehloohong le moreki oa likhoele tsa lik'hemik'hale, 'me lilemong tsa morao tjena, lipatlisiso tsa likhoele tse fetotsoeng tsa polylactic acid li behiloe pele. Li-fiber tsa polylactic acid li ka kopanngoa le "k'hothone, line, le boea" ba tlhaho ho etsa masela a lohiloeng le a lohiloeng a nang le ts'ebetso e tlatsetsang, hammoho le likhoele tse ling tsa lik'hemik'hale tse kang spandex le PTT ho etsa masela, a bonahatsa letlalo le botsoalle, le phefumolohang, le liphello tse senyang mongobo. Ba khothalelitsoe tšimong ea masela a liaparo tsa kahare.
Dongguan Liansheng Nonwoven Fabric Co., Ltd., moetsi oa masela a sa lohiloeng le masela a sa lohiloeng, o tšoaneloa ke tšepo ea hau!
Nako ea poso: Jun-11-2024