Ingabe i-HPMC ne-CMC zingaxubana
I-Methyl celluloseimhlophe noma imhlophe njengempuphu enemicu noma e-granular; Ayinaphunga, ayinambitheki. Lo mkhiqizo emanzini uyavuvukala ube yisisombululo se-colloidal esicacile noma esinamafu kancane; Ayincibiliki ku-ethanol ephelele, i-chloroform noma i-diethyl ether. Ihlakazeka ngokushesha futhi ivuvuke emanzini ashisayo ku-80-90 ℃, futhi incibilike ngokushesha ngemva kokupholisa. Isixazululo samanzi sizinzile impela ekushiseni kwegumbi, futhi singayigcoba ekushiseni okuphezulu, futhi ijeli ingashintsha nesisombululo ekushiseni.
Inokumanzika okuhle kakhulu, ukuhlakazeka, ukunamathela, ukuqina, i-emulsification, ukugcinwa kwamanzi kanye nokwakheka kwefilimu, kanye nokungangeni kwamafutha. Ifilimu inokuqina okuhle kakhulu, ukuguquguquka kanye nokucaca. Ngenxa yokuthi ayiyona i-ionic, ingahambisana nezinye i-emulsifiers, kodwa kulula ukuyikhipha usawoti, futhi isixazululo sizinzile ebangeni le-PH2 — 12. I-Sodium carboxymethyl cellulose Lo mkhiqizo usawoti we-sodium we-cellulose carboxymethyl ether, ungowe-anionic cellulose ether, umhlophe noma umhlophe okwesibhakabhaka impuphu noma izinhlayiya, ubukhulu obungu-0.5-0.7 g/cubic centimeter, cishe awunaphunga, awunambitheki, awu-hygroscopic. Kulula ukuhlakazeka emanzini uye esixazululweni se-gelatinous esibonakalayo, esinganyibiliki ku-ethanol nakwezinye izinyibilikisi eziphilayo.
Uma i-pH yesisombululo samanzi ingu-6.5 — 8.5, i-viscosity ye-slurry iyancipha kakhulu uma i-pH ingu->10 noma <5, futhi ukusebenza kungcono kakhulu uma i-pH ingu-7. Ukuze kube nokuzinza kokushisa, i-viscosity ikhuphuka ngokushesha ngaphansi kuka-20℃, ishintsha kancane ku-45℃, futhi i-colloid denaturation kanye ne-viscosity kanye nezakhiwo zehla kakhulu uma kushiswa isikhathi eside ngaphezu kuka-80℃. Incibilika kalula emanzini, isisombululo esibonakalayo; Izinzile kakhulu kwisisombululo se-alkaline, futhi kulula ukuyi-hydrolyze uma kune-asidi. Uma inani le-pH lingu-2-3, kuzokwenzeka imvula, futhi kuzokwenzeka imvula uma kune-multivalent metal salts. I-Hydroxypropyl methyl cellulose, eyaziwa nangokuthi i-hydroxypropyl methyl cellulose, i-cellulose hydroxypropyl methyl ether, ukukhetha i-cellulose kakotini emsulwa kakhulu njengezinto zokusetshenziswa, ngaphansi kwezimo ze-alkaline ngokulungiswa okukhethekile kanye nokulungiswa.
Incibilika emanzini kanye ne-polar C eningi kanye nesilinganiso esifanele se-ethanol/amanzi, i-propanol/amanzi, i-dichloroethane, njll., ayincibiliki ku-diethyl ether, i-acetone, i-ethanol ephelele, ivuvukala emanzini abandayo ibe yisisombululo se-colloidal esicacile noma esinomswakama kancane. Isixazululo samanzi sinomsebenzi wobuso, ukucaca okuphezulu kanye nokusebenza okuzinzile.I-HPMCinesimo sejeli eshisayo. Ngemva kokushisa, isixazululo samanzi somkhiqizo sakha i-gel precipitation, bese sincibilika ngemva kokupholisa. Izinga lokushisa lejeli lezinhlobo ezahlukene lihlukile.
Isikhathi sokuthunyelwe: Ephreli-25-2024