Phapano ke efe pakeng tsahydroxypropyl methylcellulose(HPMC) ka kapa ntle le S?
1. HPMC e arotsoe ka mofuta oa hang-hang le mofuta oa ho hasana ka potlako
Mofuta oa ho qhala ka potlako oa HPMC o kenngoa ka tlhaku S. Nakong ea ts'ebetso ea tlhahiso, glyoxal e lokela ho ekeletsoa.
Mofuta oa hang-hang oa HPMC ha o kenye litlhaku, joalo ka "100000" ke "100000 viscosity fast dispersion type HPMC".
2. Ka kapa ntle le S, litšobotsi li fapane
Ka potlako HPMC e qhalakana ka potlako metsing a batang ebe e nyamela ka metsing.Ka nako ena, mokelikeli ha o na viscosity, hobane HPMC e qhalakanngoa feela metsing, 'me ha ho na ho qhibiliha ha sebele.Ka mor'a metsotso e ka bang peli, viscosity ea mokelikeli e ntse e eketseha butle-butle, e etsa mokelikeli o khomarelang o bonaletsang.Colloid e teteaneng.
Instant HPMC e ka hasana ka potlako metsing a chesang a ka bang 70°C.Ha mocheso o theohela mocheso o itseng, viscosity e bonahala butle-butle ho fihlela ho thehoa li-viscous colloid tse hlakileng.
3. Ka kapa ntle le S, morero o fapane
Instant HPMC e ka sebelisoa feela ka putty powder le seretse.Likhomaretsing tsa metsi, liphahlo le lisebelisoa tsa ho hloekisa, ho tla ba teng 'me ho ke ke ha sebelisoa.
Ho qhalakanya ka potlako HPMC e na le mefuta e mengata ea lits'ebetso.E ka sebelisoa ka phofo ea putty, seretse, sekhomaretsi sa metsi, pente le lihlahisoa tsa ho hlatsoa ntle le li-contraindications.
Mokhoa oa ho qhala
1. Nka palo e hlokahalang ea metsi a chesang, e behe ka har'a setshelo 'me ue chese ka holimo ho 80 ° C,' me butle-butle u kenye sehlahisoa sena tlas'a ho sisinyeha butle-butle.Selulose e phaphamala ka holim'a metsi qalong, empa butle-butle e qhalakanngoa ho etsa seretse se tšoanang.Folisa tharollo ka ho hlohlelletsa.
2. Kapa futhumatsa 1/3 kapa 2/3 ea metsi a chesang ho feta 85 ° C, eketsa selulose ho fumana slurry ea metsi a chesang, ebe u eketsa palo e setseng ea metsi a batang, tsoela pele ho hlohlelletsa, 'me u pholile motsoako o hlahisoang.
3. Cellulose e na le palo e batlang e le ntle, 'me e teng e le karoloana e le' ngoe e nyenyane ka har'a phofo e ts'oaroang ka mokhoa o ts'oanang, 'me e qhibiliha ka potlako ha e kopana le metsi ho etsa viscosity e hlokahalang.
4. Eketsa selulose butle-butle le ka mokhoa o ts'oanang mocheso oa motsoako, 'me u tsoele pele ho hlohlelletsa nakong ea ho eketsa ho fihlela ho etsoa tharollo e hlakileng.
Ke lintlha life tse amang ho bolokoa ha metsi a hydroxypropyl methylcellulose?
Ho boloka metsi a hydroxypropyl methylcellulose HPMC sehlahisoa ka bosona hangata ho angoa ke lintlha tse latelang:
1. Cellulose ether HPMC homogeneity
HPMC e sebetsanang ka mokhoa o ts'oanang e na le kabo e tšoanang ea lihlopha tsa methoxy le hydroxypropoxy le ho boloka metsi a phahameng.
2. Cellulose ether HPMC mocheso oa mocheso oa gel
Ha mocheso oa gel o futhumatsang o phahame, sekhahla sa ho boloka metsi se phahame;ho seng joalo, sekhahla sa ho boloka metsi se ka tlase.
3. Cellulose ether HPMC viscosity
Ha viscosity ea HPMC e eketseha, tekanyo ea ho boloka metsi e boetse e eketseha;ha viscosity e fihla boemong bo itseng, ho eketseha ha sekhahla sa ho boloka metsi ho atisa ho ba bonolo.
Cellulose ether HPMC palo ea tlatsetso
Ha palo e ekelitsoeng ea cellulose ether HPMC e le kholoanyane, e phahamisa sekhahla sa ho boloka metsi le phello e ntle ea ho boloka metsi.
Boemong ba 0.25-0.6%, tekanyo ea ho boloka metsi e eketseha ka potlako ka ho eketseha ha chelete ea ho eketsa;ha palo ea tlatsetso e ntse e eketseha, mokhoa o ntseng o eketseha oa sekhahla sa ho boloka metsi o ea butle.
Nako ea poso: Oct-17-2022