Ingabe i-HPMC ne-CMC ingaxuba
I-Methyl celluloseimhlophe noma imhlophe njenge-fibrous noma i-granular powder; Ayinaphunga, ayinambitheki. Lo mkhiqizo emanzini ukuvuvukala ube isixazululo ecacile noma kancane turbid colloidal; Ayincibiliki ku-ethanol, i-chloroform noma i-diethyl ether. Ihlakazeka ngokushesha futhi ivuvuke emanzini ashisayo ku-80-90 ℃, futhi incibilike ngokushesha ngemva kokupholisa. Isixazululo se-aqueous sizinzile ekamelweni lokushisa, futhi singafaka i-gel ekushiseni okuphezulu, futhi ijeli ingashintsha nesisombululo ngezinga lokushisa.
Inokumanzisa okuhle kakhulu, ukuhlakazeka, ukunamathela, ukuqina, i-emulsification, ukugcinwa kwamanzi kanye nokwakheka kwefilimu, kanye nokungangenisi kwamafutha. Ifilimu inokuqina okuhle kakhulu, ukuguquguquka nokungafihli. Ngenxa yokuthi ayiyona i-ionic, ingahambisana namanye ama-emulsifiers, kodwa kulula ukukhipha usawoti, futhi isisombululo sizinzile ku-PH2 - 12. I-sodium carboxymethyl cellulose Lo mkhiqizo usawoti we-sodium we-cellulose carboxymethyl ether, ingeye-anionic cellulose ether, iyimpushana emhlophe noma emhlophe emhlophe noma izinhlayiyana, ukuminyana 0.5-0.7 g/cubic isentimitha, cishe ayinaphunga, ayinambitheki, i-hygroscopic. Kulula ukusabalalisa emanzini kusixazululo se-gelatinous esobala, esingancibiliki ku-ethanol nezinye izincibilikisi eziphilayo.
Uma i-pH yesisombululo samanzi ingu-6.5 — 8.5, i-viscosity ye-slurry iyancipha ngokuphawulekayo uma i-pH ingu>10 noma <5, futhi ukusebenza kuba kuhle kakhulu uma i-pH ingu-7. Ngokuzinza kokushisa, i-viscosity ikhuphuka ngokushesha ngaphansi. I-20 ℃, ishintsha kancane ku-45 ℃, futhi i-colloid denaturation kanye ne-viscosity kanye nezakhiwo kuncipha kakhulu uma kushiswa isikhathi eside. ngaphezu kuka-80 ℃. Incibilika kalula emanzini, isixazululo esobala; Izinzile kakhulu kusisombululo se-alkaline, futhi kulula ukuyi-hydrolyze esimweni se-asidi. Uma inani le-pH lingu-2-3, imvula izokwenzeka, futhi imvula izoba khona esimweni sosawoti wensimbi oningi. IHydroxypropyl methyl cellulose, eyaziwa nangokuthi i-hydroxypropyl methyl cellulose, i-cellulose hydroxypropyl methyl ether, ukukhethwa kwe-cotton cellulose ecwenge kakhulu njengempahla eluhlaza, ngaphansi kwezimo ze-alkali ngokufaka i-etherification ekhethekile nokulungiswa.
Incibilika emanzini kanye nengxenye enkulu ye-polar C kanye nengxenye efanele ye-ethanol/amanzi, i-propanol/amanzi, i-dichloroethane, njll., engancibiliki ku-diethyl ether, i-acetone, i-ethanol ephelele, ukuvuvukala emanzini abandayo ibe yisixazululo se-colloidal esicacile noma esithe ukuvuvuka kancane. Isixazululo esinamanzi sinomsebenzi ongaphezulu, ukukhanya okuphezulu nokusebenza okuzinzile.I-HPMCinempahla yejeli elishisayo. Ngemuva kokushisa, isisombululo se-aqueous somkhiqizo sakha imvula ye-gel, bese siyancibilika ngemva kokupholisa. Izinga lokushisa lejeli lokucaciswa okuhlukile lihlukile.
Isikhathi sokuthumela: Apr-25-2024