1. Moralo oa Limolek'hule le Tšobotsi ea 'Mele
1.1 Sebopeho sa Lik'hemik'hale le Mehaho ea Polymer
(Fiber ea PVA)
Polyvinyl joala (PVA) fiber ke polymer ea maiketsetso e tsoang ho hydrolysis ea polyvinyl acetate, e lebisang ho ketane e otlolohileng e entsoeng ka ho qopitsa–(CH ₂– CHOH)– likarolo tse nang le maemo a fapaneng a hydroxylation.
Ho fapana le likhoele tse ngata tsa maiketsetso tse entsoeng ke polymerization e tobileng, Hangata, PVA e etsoa ka mokhoa oa alcoholysis, moo li-monomers tsa polasetiki tsa acetate li qala ho etsoa polymerized 'me ka mor'a moo li kenngoa tlas'a mathata a acidic kapa alkaline ho nkela lihlopha tsa acetate sebaka ka hydroxyl. (– OH) bokgoni.
Boemo ba hydrolysis– ho fapana le 87% ho feta 99%– e susumetsa haholo ho qhibiliha, bokhabane, le intermolecular hydrogen bonding, ka hona e laola mekhoa ea mochini le mocheso oa fiber.
PVA e nang le hydrolyzed ka botlalo e bonts'a khanya e phahameng ka lebaka la maqhama a pharalletseng a haedrojene lipakeng tsa liketane tse haufi., ho fella ka ho tiea ha premium le ho fokotsa ho qhibiliha ha metsi ha ho bapisoa le mefuta e sa tsoaneng ea hydrolyzed..
Mokhoa ona oa limolek'hule o ka sebelisoang o lumella moralo o nepahetseng oa likhoele tsa PVA ho fihlela litlhoko tsa kopo, ho tloha ho lithuso tsa nakoana tse qhibilihang ka metsing ho ea ho litšehetso tsa nako e telele tsa meralo.
1.2 Likarolo tsa Mechini le Thermal
Likhoele tsa PVA li tumme ka matla a tsona a phahameng a tsitsipano, e ka fetang 1000 MPa ka mefuta e fapaneng ea boemo ba indasteri, e ts'oanang le ea likhoele tse ling tsa aramid ha e ntse e boloka ts'ebetso e betere.
Modulus ea bona ea mefuta e sa tšoaneng ea elasticity pakeng tsa 3 le 10 Karolelano ea lintlha tsa mophato, ho fana ka tekanyo e molemo ea ho tiea le ho ikamahanya le maemo ho loketseng bakeng sa lisebelisoa tsa masela le tse kopantsoeng.
Ntho e ka sehloohong e khethollang ke hydrophilicity ea bona e sa tloaelehang; Lithaele tsa PVA li ka nka hoo e ka bang 30– 40% boima ba tsona metsing ntle le ho qhibidiha, ho itšetlehile ka tekanyo ea hydrolysis le crystallinity.
Thepa ena ea bolulo kapa ea khoebo e etsa hore ho khonehe bakeng sa mongobo o potlakileng oa wicking le phefumoloho, ho etsa hore e be tse nepahetseng bakeng sa masela a bongaka le lihlahisoa tsa bohloeki.
Thermally, Likhoele tsa PVA li bonts'a botsitso bo boholo joalo ka 200 ° C maemong a omileng, le hoja ho pepesehela mocheso nako e telele ho baka ho felloa ke metsi 'meleng le ho fifala ka lebaka la ho senyeha ha ketane.
Leha ho le joalo, ha li qhibilihe ka lebaka la mocheso o phahameng, ho lokolla metsi le ho theha meralo e kopaneng, e thibelang tshebediso ya tsona sebakeng se futhumetseng haholo ntle le haeba di fetotsoe ka dikhemikhale.
( Fiber ea PVA)
2. Mekhoa ea Tlhahiso le Scalability ea Indasteri
2.1 Mekhoa ea ho Ohla e Metsi le Ka mor'a Kalafo
Mokhoa o ka sehloohong oa ho theha likhoele tsa PVA ke ho potoloha ha mongobo, moo ts'ebeletso e kopaneng ea metsi ea PVA e fetisetsoang ka li-spinnerets ka phaposing ea ho hlapela e kopanyang– ka kakaretso ho kenyeletsoa joala, eseng matsoai a tlhaho, kapa acid– ho potlakisa likhoele tse tiileng.
Mokhoa oa ho kopanya o laola fiber morphology, bophara, le ho beha maemo, ka litekanyo tsa ho hula ho pholletsa le ho potoloha ho amang ho beoa ha limolek'hule le matla a phahameng.
Ka mor'a coagulation, likhoele li nka mehato e mengata ea ho taka ka metsing a chesang kapa mouoane o boima ho matlafatsa kristale le maemo., ho ntlafatsa haholo meaho ea bolulo kapa ea khoebo ka mokhoa oa kristallise o bakoang ke mathata.
Liphekolo tsa morao-rao tse kang acetalization, ho rarahana ha borate, kapa kalafo ea mofuthu tlas'a tsitsipano e ntlafatsa ho sebetsa hantle.
E le mohlala, kalafo e nang le formaldehyde e hlahisa likhoele tsa polyvinyl acetal (mohlala, vinylon), ho matlafatsa ho hanyetsa metsi ha o ntse o boloka matla.
Borate crosslinking e etsa hore ho be bonolo ho lokisa marang-rang a thusang masela a bohlale le lihlahisoa tsa ho ipholisa..
2.2 Fiber Morphology le Liphetoho tsa Mosebetsi
Lifaele tsa PVA li ka etsoa ka mefuta e fapaneng ea 'mele, ho kenyelletsa monofilaments, likhoele tse ngata, likhoele tse khuts'oane tse tloaelehileng, le li-nanofiber tse hlahisoang ka mokhoa oa electrospinning.
Metebo ea PVA ea Nanofibrous, ka bophara ba 50– 500 nm, fana ka karo-karolelano e phahameng haholo ea sebaka-ho-volume, ho ba etsa bakhethoa ba hloahloa ba tlhoekiso, phano ea lithethefatsi, 'me lisele li etsa li-scaffolds.
Mekhoa ea ho fetola bokaholimo joalo ka kalafo ea plasma, ho kopanya copolymerization, kapa ho qeta ka nanoparticles ho nolofalletsa bokhoni bo ikhethileng joalo ka ts'ebetso ea antimicrobial, Ho hanyetsa UV, kapa sehokelo se ntlafalitsoeng ka matrices a kopaneng.
Liphetoho tsena li holisa ts'ebeliso ea likhoele tsa PVA ho feta ts'ebeliso e tloaelehileng ho fihlela ho thekenoloji ea sejoale-joale ea biomedical le ecological..
3. Litšobotsi Tse Molemo le Mekhoa e Mengata ea Boitšoaro
3.1 Biocompatibility le Biodegradability
O mong oa melemo ea bohlokoa ka ho fetisisa ea likhoele tsa PVA ke biocompatibility ea tsona, ho lumella ts'ebeliso e se nang kotsi ha e kopana ka kotloloho le lisele tsa motho le maro.
Li sebelisoa haholo lithupeng tsa ho buoa, liaparo tsa kotsi, le litho tsa 'mele tse entsoeng ke motho ka lebaka la lintho tsa tsona tse senyehileng tse se nang chefo le karabelo ea ho ruruha e ka thoko.
Le hoja PVA ka tlhaho e sa khone ho hlaseloa ke likokoana-hloko, e ka fuoa biodegradable ka copolymerization ka litsamaiso tse senyehang ka tlhaho kapa kalafo ea enzymatic e sebelisang libaktheria tse kang Pseudomonas le Bacillus tse hlahisang li-enzyme tse senyang PVA..
Tlhaho ena e 'meli– e phehella tlas'a mathata a tloaelehileng empa a senyeha tlas'a maemo a leholimo a laoloang– e etsa hore PVA e loketse li-implants tsa nakoana tsa biomedical le litlhare tsa ho paka lihlahisoa tse tala.
3.2 Solubility and Stimuli-Arabelo Liketso
Ho qhibiliha ha metsi ha likhoele tsa PVA ke tšobotsi e ikhethang e sebelisoang lits'ebetsong tse fapaneng, ho tloha ho litšehetso tsa nakoana tsa textile ho ea ho litsamaiso tse laoloang tsa ho qala.
Ka ho lokisa boemo ba hydrolysis le crystallinity, barekisi ba ka hlophisa maemo a mocheso oa ho qhibiliha ho tloha mocheso oa kamore ho ea holimo 90 °C, ho etsa hore ho be bonolo bakeng sa boits'oaro bo arabelang ka mokhoa o ts'oanelang linthong tse bohlale.
Mohlala, likhoele tsa PVA tse qhibilihang ka metsi li sebelisoa ho loha le ho loha e le litšehetso tsa sehlabelo tse qhibilihang ka mor'a ho sebetsa., ho siea liforeimi tse majabajaba tsa masela.
Temong, Lipeo tse koahetsoeng ka PVA kapa lipilisi tsa manyolo li ntša limatlafatsi ha li le metsi, ho matlafatsa ts'ebetso le ho fokotsa metsi.
Ka khatiso ea 3D, PVA e sebetsa e le sehlahisoa sa thuso e qhibilihang bakeng sa li-geometri tse rarahaneng, ho ntša metsi ha bonolo ntle le ho senya moralo oa mantlha.
4. Likopo Hohle Liindasteri le Meeli e Tsoang
4.1 Lesela, Bongaka, le Tšebeliso ea Tikoloho
Likhoele tsa PVA li sebelisoa ka botlalo indastering ea masela bakeng sa ho hlahisa marang-rang a matla a holimo a ho tšoasa litlhapi., liropo tsa indasteri, le masela a kopantsoeng a ntlafatsang bophelo bo bolelele le taolo ea mongobo.
Ka meriana, ba etsa liaparo tsa hydrogel tse bolokang tikoloho ea maqeba a mongobo, phatlalatsa ho hlaphoheloa, le ho fokotsa maqeba.
Bokhoni ba bona ba ho bopa pepeneneng, lifilimi tse feto-fetohang li etsa hore e be tse loketseng ho hokahana le lilense, matheba a hlahisang lithethefatsi, le li-stents tsa bioresorbable.
Ho latela tikoloho, Li-fibers tse thehiloeng ho PVA li ntse li thehoa e le mekhoa e meng ea li-microplastic ka li-detergents le litlolo, moo li qhibilihang ka ho feletseng le ho thibela tšilafalo ea nako e telele.
Meralo e tsoetseng pele ea ho sefa e kenyelletsang li-electrospun PVA nanofibers ka katleho e rekota likaroloana tse ntle., marotholi a oli, esita le ts'oaetso ka lebaka la porosity ea tsona e phahameng le bokhoni ba tsona bo ka holimo.
4.2 Tšehetso le Smart Product Assimilation
Kahong le kahong, likhoele tse khutšoane tsa PVA li kenyellelitsoe ho li-composites tsa samente ho ntlafatsa ho tiea ha matla, khanyetso e arohaneng, le ho etsa hore ho be le botsitso ho metsoako ea samente e entsoeng ka boenjiniere (ECCs) kapa lihlahisoa tse thehiloeng ho samente tse thatafatsang.
Likhonkreite tsena tse matlafalitsoeng ka fiber li bontša boitšoaro ba pseudo-ductile, e nang le bokgoni ba ho mamella khohlano e kgolo ntle le ho hloleha ho bohloko– e loketseng meaho e hananang le tšisinyeho ea lefatše.
Ka elektroniki le liroboto tse bonolo, Li-hydrogel tsa PVA li sebetsa e le li-substrates tse feto-fetohang bakeng sa likarolo tsa ho utloa le li-actuator, ho araba mongobo, pH, kapa masimo a motlakase ka tsela e batlang e le bonolo ho lokisa ho ruruha le ho fokotsa.
Ha e kopantsoe le li-filler tse tsamaisang tse kang graphene kapa carbon nanotubes, Li-composite tse thehiloeng ho PVA li sebetsa e le li-conductors tse thellang bakeng sa lisebelisoa tse aparoang.
Joalo ka nts'etsopele ea boithuto ho li-polymers tse tšoarellang le lihlahisoa tse sebetsang ka bongata, Likhoele tsa PVA li ntse li le teng ho fetoha ts'ebetso ea borokho bo feto-fetohang, tshireletso, le boitlamo ba tikoloho.
Ka kakaretso, likhoele tsa joala tsa polyvinyl li emela mokhoa o ikhethileng oa lihlahisoa tsa maiketsetso tse kopanyang ts'ebetso e phahameng ea mochini le hydrophilicity e makatsang., biocompatibility, le tunable solubility.
Ho ikamahanya le maemo ho pholletsa le biomedical, khoebo, le libaka tsa tikoloho li hatisa karolo ea bona ea bohlokoa ho saense ea thepa ea moloko o latelang le kholo e tsitsitseng ea theknoloji ea morao-rao.
5. Morekisi
Cabr-Concrete ke mofani oa thepa tlas'a TRUNNANO ea Calcium Aluminate Cement e nang le over 12 lilemo tsa boiphihlelo ba ho boloka matla a nano-building le nts'etsopele ea nanotechnology. E amohela tefo ka Credit Card, T/T, West Union le Paypal. TRUNNANO e tla romella thepa ho bareki ba mose ho maoatle ka FedEx, DHL, ka moea, kapa ka lewatle. Haeba u batla pva fiber e matlafalitsoeng ka konkreite, ka kopo ikutloe u lokolohile ho ikopanya le rona le ho romela potso.
Li-tag: pva fiber,fiber ea joala ea polyvinyl, konkreite ea pva
Lingoliloeng tsohle le litšoantšo li tsoa Marang-rang. Haeba ho na le litaba tsa copyright, ka kopo ikopanye le rona ka nako ho hlakola.
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