Ho kheloha li-ethe tsa celluulose e ka ba mokhoa o rarahaneng ka lebaka la sebopeho sa tlhaho sa lik'hemik'hale tse ikhethang tsa lik'hemik'hale. Ethen ea poleloana ea selefoui e nkiloeng ka metsing e nkiloeng ho kutu, ho etsahala polysaccharide e fumanehang marakong a lily. Li sebelisoa haholo indastering e fapaneng e kang meriana, lijo, masela le ho haha litseleng tse ngata tsa lifilimi, li tlamahalla ebile li thatafatsa.
1. Lintlha tsa celly celsim
Ethen ea 'mampoli oa sele celluulose, moo lihlopha tsa hydroyyl li bileng teng ka botlalo le lihlopha tse ling. Mefuta e atileng haholo e kenyelletsa cathyl celnylpropypropityl celluulose. Mofuta o mong le o mong o na le thepa e ikhethang ho latela degree le mofuta oa ho nkeloa sebaka.
2. Lintlha tse amang qubu:
Lintlha tse 'maloa li susumetsa qubu ea li-ethe tsa celluulose:
Degree of Sing, DS): DS e phahameng ka kakaretso e ntlafatsa scobility joalokaha e eketsa hydrophlicity ea polymer ea polymer ea polymer ea polymer ea polymer ea polymer ea polymer ea polymer ea polymer ea polymer ea polymer ea polymer ea polymer ea polymer ea polymer ea polymer ea polymer ea polymer ea polymer ea polymer ea polymer ea polymer ea polymer ea polymer ea polymer ea polymer ea polymer ea polymer ea polymer ea polymer ea polymer ea polymer ea polymer ea polymer ea polymer ea polymer ea polymer ea polymer ea polymer ea polymer ea polymer ea polymer ea polymer ea polymer ea polymer ea polymer.
Boima ba Molecular: Boitsebiso bo phahameng ba limolek'hule ba 'mele ba selefouno ba ka hloka nako kapa matla a eketsehileng bakeng sa ho qhalana.
Thepa ea solt: Loeldrojen e nang le matla a polasetiki le a hydronine, joalo ka li-solvent tse phahameng, tse kang mabili a metsi le polar manyolo ka kakaretso bakeng sa ho khetholla 'nete ea kutu.
Mocheso: mocheso o ntseng o eketseha o ka ntlafatsa linyeeletsing ka ho eketsa matla a limolek'hule tsa kinetic.
Tšusumetso: Kholiso ea mecha e ka thusa ho felisoa ka ho eketsa lebitso lipakeng tsa solvent le polymer.
PH: Bakeng sa etheme e 'ngoe e' ngoe ea cellulose
3. Li-solves bakeng sa ho felisoa:
Metsi: Bo-'Ethe-bo-mme-bo-mme-bo-celbelo basel ba qhibiliha habonolo ka metsing, ba le etsa hore e ahlole likopo tse ngata.
Albols: Ethanol, Methanol, Methanol, Methanol, Methanol e sebelisoa hangata ho ntlafatsa tharollo ea bo-ralimba ea celluulo, haholo-holo ba nang le alloudity ea metsi.
Li-solvents tsa khale: dimbethl sulfoxide (dmso), dimethyformamide (DMF) hangata e sebelisoa le likopo tse ikhethang moo soltubility e ntle.
4. Tsuba ea disfototion:
Mosupi o bonolo: Bakeng sa lits'ebetso tse ngata, feela ho hlohlelletsa lintlha tsa cll lerabeng ka thata ka mocheso o lekaneng oa ho khesoa. Leha ho le joalo, lithemparetjha tse phahameng le linako tse phahameng tse susumetsang li ka hlokahala bakeng sa ho felisoa ka botlalo.
Ho futhumatsa: Ho futhumatsa motsoako oa Solivent-Plymer-Plymer-Plymer
Phokotso: Tšepa ea ultranyoc e khona ho ntlafatsa disfottion ka ho theha lithutsoana ka ho theha li-bubble tse kopaneng le ho ntlafatsa ho kenella ha Solivent.
Ts'ebeliso ea li-solvents tsa chokono: li-solven tse ling tsa joala kapa tse ling tsa polar li ka ntlafatsang qubu e nang le selefounu.
5. Mehopolo e sebetsang:
Sekhahla sa dififi: EMS e ntle ea celluulole e tsoekere e qhibilihe haholo ho feta likarolo tse kholo ka lebaka la sebaka se ntseng se eketseha.
Ho hlophisoa ha tharollo: Ho pheha tharollo ka mokhoa oa cellseulo ka mokhoa o hlakileng, joalo ka ho lahla polyer ka pele, e ka thusa ho thibela ho khoepa le ho netefatsa discoretion.
Phetoho ea PH: Bakeng sa li-Ethes tsa cellulose
Ts'isira: Li-solven tse ling tse sebelisitsoeng bakeng sa e-so ho soma celluulose li ka baka likotsi tsa bophelo bo botle le tsa polokeho. Boitlamo bo nepahetseng le lisebelisoa tsa ts'ireletso li lokela ho sebelisoa ha ba sebetsana le li-solvent tsena.
6. Ke nahana ka kopo:
Mehala ea merima: Khetho ea mokhoa oa solvent le disfolution o ipapisitse le litlhoko tse tobileng ea ho theha.
Lijo: likopo tsa lijo, e-ba-e-ba-li-e-ba-e-ba-callseable base ba sebelisoa e le bolotsana, ba hlabillisang le ba libaka tsa mafura. Solvelts e lumellanang le melao ea lijo e lokela ho sebelisoa, 'me maemo a qholoriso a lokela ho ntlafatsoa ho boloka boleng ba sehlahisoa.
Kaho ea li-ethe tsa selefou tsa clumulose li sebelisoa lisebelisoa tsa kaho tse kang seretse, ho betla le hod'eno. Solventing Khetha ea Khetha le ea Delvention e bohlokoa ho fumana ho fihlela pono e lakatsehang le thepa ea ts'ebetso.
7. Leseli la ka moso:
Patlisiso e le lipatlisiso tsa likhohlo tsa likhohlo le mahlale a dissuption a ntse a tsoela pele ho ntšetsa pele tšimo ea Cellulo Somery. Likoloi tse tala, tse kang lino tse maputsoa tse bobileng li-co2 le lisifi tsa li-Ionic, fana ka melemo e meng ea tikoloho. Ho feta moo, tsoelo-pele ea boenjiniere ba Polymer le Nannatechnology e ka lebisa nts'etsopele ea lisele tsa celluulose le litšobotsi tse ntlafalitsoeng.
Khethollo ea ethe ea 'mele oa cellulose ke ts'ebetso e mengata e susumetsoang ke lintlha tse fapaneng tse kang sebopeho sa Pootermer, thepa ea qhobosheane. Ho utloisisa lintlha tsena le ho khetha li-solvent le mekhoa e nepahetseng ho bohlokoa bakeng sa ho fihlela pherekano e nepahetseng le ho ntlafatsa ts'ebetso ea li-cellulose tse qaqileng lits'ebetsong tse fapaneng.
Nako ea poso: AP-10-2024