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 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 obubanzi 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