Ngokuvamile, i-viscosity ye-hydroxypropyl methylcellulose iphakeme. Kodwa-ke, kuya futhi ngezinga lokushintshwa kanye nesilinganiso sezinga lokushintshwa. IHydroxypropyl methyl cellulose ingeye-non-ionic cellulose ether, ukubukeka kwayo kuyimpushana emhlophe, ayinaphunga futhi ayinambitheki, incibilika emanzini kanye nezincibilikisi eziningi eziphila ezindaweni ezishisayo kanye nengxenye efanele ye-ethanol/amanzi, i-propanol/amanzi, i-dichlorethylene Ayincibiliki kuma-alkanes, i-acetone, kanye ne-ethanol ephelele, futhi ikhukhumale ibe isixazululo se-colloidal esicacile noma esithuthuma kancane emanzini abandayo. Isixazululo esinamanzi sinomsebenzi ongaphezulu, sakha ifilimu elincanyana ngemva kokomiswa, sishintshashintsha sisuka kusol 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.
Ukugcinwa kwamanzi kwemikhiqizo ye-hydroxypropyl methylcellulose kuvame 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 liphansi.
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: Mar-14-2023