Mekhoa ea ho qhala ether ea cellulose ke efe?

Ho qhala li-ether tsa cellulose e ka ba mohato oa bohlokoa liindastering tse fapaneng tse kang meriana, lijo, masela le kaho.Li-ether tsa seluloseli sebelisoa haholo ka lebaka la thepa ea tsona e kang ho teteana, ho tlama, ho etsa filimi le ho tsitsisa. Leha ho le joalo, ho se qhibilihe ha tsona litharollong tse ngata tse tloaelehileng ho ka baka mathata. Mekhoa e 'maloa e ntlafalitsoe ho qhala li-ether tsa cellulose ka katleho.

Li-solvent tsa tlhaho:

Li-alcohol: Li-alcohol tse nang le boima bo tlase ba limolek'hule tse kang ethanol, methanol, le isopropanol li ka qhala li-ether tsa cellulose ho isa bohōleng bo itseng. Leha ho le joalo, li kanna tsa se lokele mefuta eohle ea li-ether tsa cellulose 'me li ka hloka mocheso o phahameng.
Metswako ya Ether-Jwala: Metswako ya diethyl ether le ethanol kapa methanol hangata e sebediswa ho qhala di-ether tsa cellulose. Di-solvent tsena di fana ka ho qhibiliha ho hotle mme di sebediswa hangata dibakeng tsa laboratori.
Li-Ketone: Li-ketone tse ling tse kang acetone le methyl ethyl ketone (MEK) li ka qhala mefuta e itseng ea li-ether tsa cellulose. Acetone, haholo-holo, e sebelisoa haholo ka lebaka la litšenyehelo tsa eona tse tlase le katleho.
Li-Ester: Li-Ester tse kang ethyl acetate le butyl acetate li ka qhala li-ester tsa cellulose ka katleho. Leha ho le joalo, li ka 'na tsa hloka ho futhumatsoa ho fihlela ho qhibiliha ka ho feletseng.

Litharollo tsa Metsi:

Litharollo tsa Alkaline: Li-ether tsa cellulose li ka qhibiliha ka har'a litharollo tsa alkaline tse kang sodium hydroxide (NaOH) kapa potassium hydroxide (KOH). Litharollo tsena li hydrolyze li-ether tsa cellulose ho etsa letsoai la tšepe ea alkali, tse qhibilihang habonolo.
Litharollo tsa Ammonia: Litharollo tsa Ammonia (NH3) li ka boela tsa sebelisoa ho qhala li-ether tsa cellulose ka ho etsa matsoai a ammonium a ether.
Litharollo tsa Hydroxyalkyl Urea: Litharollo tsa Hydroxyalkyl urea, tse kang hydroxyethyl urea kapa hydroxypropyl urea, li ka qhala li-ether tsa cellulose ka katleho, haholo-holo tse nang le maemo a tlase a ho nkeloa sebaka.

Metsi a Ionic:

Metsi a ionic ke matswai a tlhaho a leng mokelikeli mochesong o tlase haholo, hangata ka tlase ho 100°C. Metsi a mang a ionic a fumanoe a qhala li-ether tsa cellulose ka katleho ntle le tlhoko ea maemo a thata. A fana ka melemo e kang ho feto-fetoha ho tlase, botsitso bo phahameng ba mocheso, le ho sebelisoa hape.

Mekhoa e Kopantsoeng ea Solvent:

Ho kopanya ditharollo tse fapaneng ka nako e 'ngoe ho ka ntlafatsa ho qhibiliha ha di-ether tsa cellulose. Mohlala, metswako ya metsi le setharollo se kopaneng jwalo ka dimethyl sulfoxide (DMSO) kapa N-methyl-2-pyrrolidone (NMP) e ka ntlafatsa thepa ya ho qhibilihisa.
Khopolo ea Hansen Solubility Parameters hangata e sebelisoa ho rala litsamaiso tse sebetsang tsa solvent tse tsoakiloeng bakeng sa ho qhala li-ether tsa cellulose ka ho nahana ka liparamente tsa ho qhibiliha ha solvents ka bomong le likamano tsa tsona.

Mekhoa ea 'Mele:

Ho kuta ka mechine: Ho kopanya ka ho shear kapa ho soaea ka mokhoa o phahameng ho ka thusa ho qhalakanya li-ether tsa cellulose ka har'a li-solvents le ho ntlafatsa kinetics ea ho qhibiliha.
Taolo ea Mocheso: Hangata mocheso o phahameng o ka eketsa ho qhibiliha ha li-ether tsa cellulose li-solvents tse itseng, empa tlhokomelo e lokela ho nkoa ho qoba ho senyeha ha polymer.

Phetoho ea Lik'hemik'hale:

Maemong a mang, phetoho ea lik'hemik'hale ea li-ether tsa cellulose e ka ntlafatsa thepa ea tsona ea ho qhibiliha. Mohlala, ho kenyelletsa lihlopha tse sa rateng metsi kapa ho eketsa tekanyo ea ho nkeloa sebaka ho ka etsa hore li-ether tsa cellulose li qhibilihe haholoanyane ka har'a li-solvents tsa tlhaho.

Litharollo tsa Micellar:

Li-surfactants li ka etsa li-micelles ka har'a tharollo, e ka qhibilihangli-ether tsa seluloseKa ho fetola mahloriso a surfactant le maemo a tharollo, ho a kgoneha ho qhala di-ether tsa cellulose ka katleho.
Qetellong, khetho ea mokhoa oa ho qhala li-ether tsa cellulose e itšetlehile ka lintlha tse kang mofuta oa ether ea cellulose, ho qhibiliha ho lakatsehang, lintho tse nahanoang ka tikoloho, le ts'ebeliso e reriloeng. Mokhoa o mong le o mong o na le melemo le mefokolo ea oona, 'me bafuputsi ba tsoela pele ho hlahloba mekhoa e mecha ea ho ntlafatsa ho qhala ha li-ether tsa cellulose ka har'a li-solvents tse fapaneng.