Hydroxypropylmethylcellulose (HPMC) ke cellulose ether e nkiloeng mehloling ea tlhaho joalo ka makhasi a patsi le lithara tsa k'hothone.Ka lebaka la thepa ea eona e ikhethang, ho kenyelletsa le ho qhibiliha ha metsi, bokhoni ba ho teteka, thepa ea ho etsa lifilimi, joalo-joalo, e sebelisoa haholo liindastering tse sa tšoaneng.E 'ngoe ea lintlha tsa bohlokoa tse lokelang ho nahanoa ha u sebelisa HPMC ke viscosity ea eona, e ka amang ts'ebetso ea eona haholo libakeng tse fapaneng tsa ts'ebeliso.Sehloohong sena, re tšohla hore na ke hobaneng ha cellulose HPMC e nang le viscosity e fapaneng e lokela ho khethoa bakeng sa maemo a fapaneng a ts'ebeliso, le hore na viscosity e nepahetseng e ka thusa joang ho ntlafatsa ts'ebetso ea HPMC.
Viscosity ke tekanyo ea khanyetso ea mokelikeli ho phalla 'me ke ntho ea bohlokoa ho nahanoa ha ho etsoa lihlahisoa tse hlokang litšobotsi tse itseng tsa phallo.Viscosity e ama ts'ebetso ea HPMC hobane e etsa qeto ea bokhoni ba eona ba ho etsa li-gel, tse amang pH ea tharollo, botenya ba ho roala, le lisebelisoa tse ling tsa 'mele.HPMC e fumaneha ka limaraka tse fapaneng tsa viscosity, mefuta e tsebahalang haholo e le low viscosity (LV), medium viscosity (MV) le viscosity e phahameng (HV).E 'ngoe le e' ngoe ea mefuta ena e na le morero o itseng 'me e loketse tikoloho e itseng.
Viscosity e tlase (LV) HPMC
Low viscosity HPMC e na le boima bo tlase ba limolek'hule 'me e qhibiliha habonolo metsing.Ke mofuta o atileng haholo oa HPMC mme o sebelisoa liindastering tse fapaneng tse fapaneng ho kenyeletsoa lijo, litlolo, kaho le litlhare.LV HPMC e loketse hantle bakeng sa lits'ebetso tse hlokang litharollo tsa viscosity tse tlase ho isa ho tse mahareng joalo ka li-gel tse hlakileng, li-emulsion le lipente.LV HPMC e ka boela ea sebelisoa ho lelefatsa sethala sa bophelo ba lijo, ho fokotsa syneresis le ho fana ka sebopeho se boreleli.
LV HPMC e boetse e sebelisoa khafetsa indastering ea kaho ho ntlafatsa ts'ebetso ea lisebelisoa tse thehiloeng ho samente joalo ka seretse, li-grouts le likhomaretsi tsa lithaele.E thusa ho fokotsa tahlehelo ea metsi ka har'a metsoako ea samente, e thibela ho phunyeha, 'me e matlafatsa maqhama pakeng tsa thepa.LV HPMC e boetse e sebelisoa ho eketsa matla le ho tšoarella ha plaster, stucco le lisebelisoa tse ling tse amanang.
Viscosity e Bohareng (MV) HPMC
Viscosity e mahareng HPMC e na le boima ba molek'hule bo holimo ho feta LV HPMC 'me ha e khone ho qhibiliha metsing.Hangata e sebelisoa lits'ebetsong tse hlokang litharollo tse tsepamisitsoeng haholo joalo ka li-coatings, varnishes le inki.MV HPMC e na le taolo e ntle ea phallo le thepa ea ts'ebeliso ho feta LV HPMC, e hlahisang botenya ba filimi bo ts'oanang le bo ts'oanang.MV HPMC e ka boela ea sebelisoa ho feta mefuta e mengata ea pH, e fana ka mekhoa e mengata e fapaneng bakeng sa lisebelisoa tse fapaneng.
MV HPMC e boetse e sebelisoa haholo lihlahisoa tsa meriana, tse kang matlapa a ho lokolloa a laoloang, kaha e liehisa ho qhibiliha 'me kahoo e lelefatsa ho lokolloa ha metsoako e sebetsang.
Viscosity e Phahameng (HV) HPMC
High viscosity HPMC e na le boima bo phahameng ka ho fetisisa ba limolek'hule ho limaraka tse tharo 'me ke eona e qhibilihang ka ho fetisisa metsing.Hangata e sebelisoa lits'ebetsong tse hlokang ho tiisa le ho tsitsisa, joalo ka li-sauces, litlolo le li-gel.HV HPMC e thusa ho ntlafatsa sebopeho le ponahalo ea lihlahisoa, e fana ka boiphihlelo bo monate ba basebelisi.E ka boela ea sebelisoa ho tsitsisa li-emulsions, ho thibela ho lula le ho lelefatsa bophelo ba sethala.Ho feta moo, HV HPMC hangata e sebelisoa indastering ea pampiri ho ntlafatsa matla a pampiri le ho hatisoa.
ha re phethela
Viscosity e nepahetseng ea HPMC e bohlokoa ho ntlafatsa ts'ebetso ea eona libakeng tse fapaneng tsa ts'ebeliso.LV HPMC e loketse hantle bakeng sa lits'ebetso tse hlokang litharollo tsa viscosity tse tlase ho isa ho tse mahareng, athe MV HPMC e loketse litharollo tse tenya joalo ka lipente, li-varnish le li-inks.Qetellong, HV HPMC e loketse lits'ebetso tse hlokang ho tiea le ho tsitsisa joalo ka litlolo, lijeli le lisoso.Ho khetha viscosity e nepahetseng ho ka thusa ho ntlafatsa ts'ebetso ea kakaretso ea HPMC le ho e etsa e loketseng lits'ebetso tse fapaneng.
Nako ea poso: Aug-31-2023