Ngokuvamile, i-viscosity yei-hydroxypropyl methylcelluloseiphakeme, kodwa futhi kuya ngezinga lokushintshwa kanye nezinga elimaphakathi lokushintshwa. IHydroxypropyl methyli-celluloseiyi-ether engeyona i-ionic cellulose ebukeka njengempushana emhlophe futhi ayinaphunga futhi ayinambitheki, encibilika emanzini nasezincibilikilweni eziningi eziphila endaweni epholile nezilinganiso ezifanele ze-ethanol/amanzi, i-propanol/amanzi, i-dichloroethane, njll., engancibiliki ku-acetone ne-ethanol ephelele, ikhukhumala ibe i-colloid ecacile noma eguqubele kancane emanzini abandayo. Isixazululo esinamanzi sinomsebenzi ongaphezulu, sakha ifilimu elincanyana ngemva kokomiswa, sishintshashintsha ukusuka ku-sol siye kujeli ngokulandelana lapho sishisa futhi sipholiswa. Ukucaca okuphezulu nokusebenza okuzinzile.
IHydroxypropyl methylcellulose inendawo ye-gelation eshisayo. Ngemuva kokuthi isixazululo esinamanzi somkhiqizo sishisiwe, sakha ijeli futhi sincibilike, futhi sihlakazeke ngemuva kokupholisa. Izinga lokushisa le-gelation lokucaciswa okuhlukile lihlukile. I-Solubility iyahlukahluka ngokuya nge-viscosity. I-viscosity ephansi, i-solubility enkulu. Izakhiwo ze-hydroxypropyl methylcellulose ezinemininingwane ehlukene zihlukile. Ukuchithwa kwe-hydroxypropyl methylcellulose emanzini akuthintwa inani le-pH.
Izici: Inezici zekhono lokuqina, ukukhipha usawoti, ukuzinza kwe-PH, ukugcinwa kwamanzi, ukuzinza kwe-dimensional, impahla enhle kakhulu yokwenza ifilimu, ububanzi obuningi bokumelana nama-enzyme, ukuhlakazeka nokuhlangana.
Iukugcinwa kwamanziyemikhiqizo ye-hydroxypropyl methylcellulose ivamise ukuthintwa yizici ezilandelayo:
1. Ukufana kwe-hydroxypropyl methylcellulose
I-hydroxypropyl methylcellulose, i-methoxyl ne-hydroxypropoxyl esabela ngendlela efanayo isatshalaliswa ngokulinganayo, futhi izinga lokugcinwa kwamanzi liphezulu.
2. I-Hydroxypropyl methylcellulose izinga lokushisa elishisayo lejeli
Lapho izinga lokushisa lejeli elishisayo liphakeme, izinga lokugcinwa kwamanzi liphakeme; Uma kungenjalo, izinga lokugcinwa kwamanzi liyancipha.
3. I-Viscosity ye-hydroxypropyl methylcellulose
Lapho i-viscosity ye-hydroxypropyl methylcellulose ikhula, izinga lokugcinwa kwamanzi liyanda; lapho i-viscosity ifinyelela ezingeni elithile, ukwanda kwezinga lokugcinwa kwamanzi kuvame ukuba mnene.
4. Inani le-hydroxypropyl methylcellulose elengeziwe
Uma likhulu inani le-hydroxypropyl methylcellulose elingeziwe, izinga lokugcinwa kwamanzi likhuphuka futhi kuba ngcono umphumela wokugcina amanzi. Ebangeni lokuhlanganisa okungu-0.25-0.6%, izinga lokugcinwa kwamanzi likhuphuka ngokushesha ngokunyuka kwenani elingeziwe; lapho inani elingeziwe likhuphuka, inkambiso yokwenyuka kwezinga lokugcina amanzi iyancipha.
Isikhathi sokuthumela: Aug-28-2023