Ho utloisisa Hydroxypropyl Methyl Cellulose (HPMC)
Hydroxypropyl Methyl Cellulose (HPMC) ke polymer e feto-fetohang e sebelisoang haholo liindastering tse fapaneng, ho kenyeletsoa meriana, lijo, litlolo le kaho. Lintho tsa eona tse ikhethang, tse kang ho qhibiliha ha metsi, gelation holim'a mocheso, le bokhoni ba ho etsa filimi, e etsa hore e be motsoako oa bohlokoa mekhoeng e mengata. E 'ngoe ea lintho tse mahlonoko tsa HPMC ke viscosity ea eona, e amang haholo ts'ebetso le ts'ebeliso ea eona.
Lintlha tse Susumetsang Viscosity ea HPMC
Lintlha tse 'maloa li ama viscosity ea HPMC, ho kenyelletsa:
Boima ba Molek'hule: Limaraka tsa HPMC tsa boima bo phahameng ba limolek'hule hangata li bonts'a viscosity e phahameng.
Concentration: The viscosity e eketseha ka bongata ba HPMC tharollong.
Mocheso: Viscosity e fokotseha ka mocheso o ntseng o eketseha ka lebaka la liketane tsa polymer tse tsamaeang le ho feta.
pH: HPMC e tsitsitse ho pholletsa le mefuta e mengata ea pH, empa maemo a pH a feteletseng a ka ama viscosity.
Degree of Substitution (DS) le Molar Substitution (MS): Tekanyo ea phapanyetso (palo ea lihlopha tsa hydroxyl e nkeloe sebaka ke lihlopha tsa methoxy kapa hydroxypropyl) le phapanyetso ea molar (palo ea lihlopha tsa hydroxypropyl ka yuniti ea tsoekere) e susumetsa ho solubility le viscosity ea HPMC
Viscosity e nepahetseng bakeng sa lits'ebetso tse fapaneng
Viscosity e nepahetseng ea HPMC e itšetlehile ka ts'ebeliso e khethehileng. Mona ke ho sheba ka botlalo hore na litlhoko tsa viscosity li fapana joang liindasteri tse fapaneng:
1. Meriana ea meriana
Litlhareng tsa meriana, HPMC e sebelisoa e le se tlamang, sa pele sa filimi, le se laoloang-ho lokolloa ka matlapeng le li-capsules.
Ho roala Letlapa: Viscosity e tlaase ho ea bohareng HPMC (3-5% tharollo e nang le 50-100 cps) e loketse ho roala filimi, ho fana ka lera le boreleli, le sireletsang.
Phatlalatso e Laoloang: High viscosity HPMC (1% tharollo e nang le 1,500-100,000 cps) e sebelisoa matlapeng a matrix ho laola sekhahla sa ho lokolloa ha motsoako o sebetsang, ho netefatsa hore ho lokolloa ho tsitsitseng ha nako e ntse e ea.
Binder ho Granulation: Bohareng ba viscosity HPMC (tharollo ea 2% e nang le 400-4,000 cps) e khethoa bakeng sa mekhoa ea granulation e metsi ho etsa granules ka matla a matle a mochine.
2. Indasteri ea Lijo
Indastering ea lijo, HPMC e sebelisoa e le setenya, se tsitsitseng, le emulsifier.
Thickening Agent: Viscosity e tlase ho isa ho e mahareng HPMC (1-2% tharollo e nang le 50-4,000 cps) e sebelisetsoa ho tenya lisoso, meseho le sopho.
Emulsifier le Stabilizer: Low viscosity HPMC (1% tharollo e nang le 10-50 cps) e loketse ho tsitsisa emulsion le foams, ho fana ka sebopeho se lakatsehang lihlahisoa tse kang ice cream le toppings tse shapuoa.
3. Litlolo le Tlhokomelo ea Motho
HPMC e sebelisoa ho litlolo bakeng sa ho tenya, ho etsa lifilimi le thepa ea eona e mongobo.
Lotions le Creams: Tlase ho ea bohareng ba viscosity HPMC (1% tharollo e nang le 50-4,000 cps) e fana ka botsitso bo lakatsehang le botsitso.
Lihlahisoa tsa Tlhokomelo ea Moriri: HPMC e nang le viscosity e bohareng (1% tharollo e nang le 400-4,000 cps) e sebelisoa ka li-shampoo le li-conditioner ho ntlafatsa sebopeho le ts'ebetso.
4. Indasteri ea Kaho
Kahong, HPMC ke karolo ea bohlokoa lihlahisoa tse kang likhomaretsi tsa lithaele, lipolasetere le lisebelisoa tse thehiloeng ho samente.
Likhomaretsi tsa Lithaele le Li-Grouts: Bohareng ho ea holimo ho viscosity HPMC (tharollo ea 2% e nang le 4,000-20,000 cps) e ntlafatsa ho sebetsa, ho boloka metsi, le thepa ea ho khomarela.
Li-Plaster tsa Cement: HPMC ea viscosity e bohareng (1% tharollo e nang le 400-4,000 cps) e ntlafatsa ho boloka metsi le ho sebetsa, ho thibela mapetsong le ho ntlafatsa qetello.
Tekanyo ea Viscosity le Maemo
Viscosity ea HPMC hangata e lekanyetsoa ka viscometer, 'me liphetho li hlahisoa ka centipoise (cps). Mekhoa e tloaelehileng joalo ka Brookfield viscometry kapa capillary viscometry e sebelisoa ho latela mofuta oa viscosity. Khetho ea sehlopha se nepahetseng sa HPMC e tataisoa ke litlhaloso tse fanoeng ke bahlahisi, tse kenyelletsang lintlha tse qaqileng tsa viscosity.
Mehopolo e Sebetsang
Ha u khetha HPMC bakeng sa ts'ebeliso e itseng, lintlha tse 'maloa tse sebetsang li lokela ho nahanoa:
Tokisetso ea Tharollo: hydration e nepahetseng le ho qhibiliha li bohlokoa bakeng sa ho fihlela viscosity e lakatsehang. Ho eketsa butle-butle ho metsi ka ho sisinyeha ho sa khaotseng ho thusa ho thibela ho thehoa ha leqeba.
Tšebelisano: Ho lumellana ha HPMC le metsoako e meng ea ho etsoa ho lokela ho lekoa ho netefatsa botsitso le katleho.
Maemo a Polokelo: Viscosity e ka angoa ke maemo a polokelo joalo ka mocheso le mongobo. Poloko e nepahetseng sebakeng se phodileng, se omileng ke sa bohlokwa ho boloka boleng ba HPMC.
The viscosity e loketseng ea Hydroxypropyl Methyl Cellulose (HPMC) e fapana haholo ho itšetlehile ka kopo, ho tloha ho viscosity e tlaase bakeng sa emulsification le botsitso lihlahisoa tsa lijo ho ea ho li-viscosity tse phahameng bakeng sa ho lokolloa ha lithethefatsi tse laoloang litlhare. Ho utloisisa litlhoko tse ikhethang tsa indasteri e 'ngoe le e' ngoe le ts'ebeliso ho bohlokoa bakeng sa ho khetha sehlopha se nepahetseng sa HPMC, ho netefatsa ts'ebetso le ts'ebetso e nepahetseng. Ka ho nahana ka lintlha tse kang boima ba limolek'hule, mahloriso, mocheso le pH, bahlahisi ba ka khona ho lokisa tharollo ea HPMC ho finyella litlhoko tse nepahetseng tsa tlhahiso.
Nako ea poso: May-22-2024