I-Methylcellulose (MC) kanye ne-Hydroxypropyl Methylcellulose (HPMC) kokubili okuphuma ku-cellulose encibilikayo emanzini, asetshenziswa kakhulu ekudleni, emithini yemithi, ekwakhiweni nasekunakekeleni komuntu siqu.
1. Ukwehluka kwesakhiwo
I-Methylcellulose (MC):
I-Methylcellulose iphuma ku-cellulose etholakala ngokushintsha ingxenye yamaqembu e-hydroxyl e-cellulose nge-methyl (-OCH3).
Isakhiwo sayo samakhemikhali silula, ikakhulukazi sakhiwe uhlaka lwe-cellulose kanye ne-methyl esikhundleni.
IHydroxypropyl Methylcellulose (HPMC):
I-HPMC yakheka ngokuqhubeka nokwethula i-hydroxypropyl (-C3H7O) esikhundleni se-methylcellulose.
Lolu shintsho lwesakhiwo lwenza kube nenzuzo eyengeziwe mayelana nezici ze-solubility kanye ne-viscosity emanzini.
2. Ukuncibilika
I-Methylcellulose incibilika kalula emanzini abandayo, kodwa ayincibiliki kalula emanzini ashisayo, futhi ngokuvamile ibonisa imvelo ye-colloidal. Lokhu kwenza izici ze-MC zingashintsha lapho izinga lokushisa likhuphuka.
IHydroxypropyl Methylcellulose ingancibilika kahle emanzini abandayo nashisayo, futhi ukuncibilika kwayo kungcono kunaleyo ye-methylcellulose. I-HPMC isengagcina ukunyibilika kwayo emanzini kumazinga okushisa aphezulu futhi ifanele izinhlelo zokusebenza ezidinga ukwelashwa kokushisa.
3. Izici ze-viscosity
I-Methylcellulose ine-viscosity ephansi futhi ifanele ukwakheka okungadingi i-viscosity ephezulu.
IHydroxypropyl methylcellulose ine-viscosity ephakeme futhi ingalungiswa ngokushintsha isisindo sayo samangqamuzana kanye nezinga lokushintshwa. Lokhu kwenza i-HPMC ikwazi ukuguquguquka kakhulu ekusetshenzisweni okuhlukahlukene, ikakhulukazi ezimbonini zokwakha nezemithi.
4. Izindawo zokufaka izicelo
I-Methylcellulose ivame ukusetshenziswa embonini yokudla njenge-thickener, emulsifier kanye ne-stabilizer, futhi ibuye isetshenziswe kweminye imikhiqizo yezemithi njengento yokumboza izidakamizwa.
IHydroxypropyl methylcellulose inohlelo lokusebenza olubanzi. Ngaphezu kokudla nemithi, ibuye isetshenziswe kakhulu ezintweni zokwakha (njengodaka olomile) kanye nemikhiqizo yokunakekela umuntu (njengamafutha esikhumba nama-shampoos) ngenxa yezakhiwo zayo ezinhle zokwakha ifilimu nokunamathela.
5. Izici zokusebenza
I-Methylcellulose inezindawo ezinhle kakhulu zokugcina amanzi kanye nezakhiwo zefilimu futhi ivame ukusetshenziswa emikhiqizweni edinga ukugcina umswakama.
I-Hydroxypropyl methylcellulose inokumelana nokushisa okuhle kanye nezakhiwo ezinhle kakhulu zokwakha ifilimu ngaphezu kokugcinwa kwamanzi, ngakho-ke isebenza kangcono ekusetshenzisweni okunokushisa okuphezulu.
6. Ukuphepha nokuzinza
Zombili ziyizithasiselo zokudla ezingenabuthi futhi ngokuvamile zibhekwa njengeziphephile. Nokho, i-HPMC ingase ikhethwe ezinhlelweni ezithile ngenxa yokuzinza nokuhambisana kwayo okungcono.
I-Methylcellulose kanye ne-hydroxypropyl methylcellulose ihluke kakhulu ekwakhekeni kwamakhemikhali, ukunyibilika, izici ze-viscosity nezindawo zokusebenzisa. Ukukhethwa kwezinto ezifanele ngokuvamile kuncike ezidingweni zohlelo oluthile. I-MC ilungele ukuqina nokuqiniswa kwezinhlelo zokusebenza ezilula, kuyilapho i-HPMC ifaneleka kakhulu izinhlelo zokusebenza eziyinkimbinkimbi zezimboni nezohwebo ngenxa yokuncibilika kwayo okuphakeme namandla okulungisa i-viscosity.
Isikhathi sokuthumela: Oct-21-2024