Hydroxypropyl methylcellulose (HPMC) ke polymer e feto-fetohang e fumanang lits'ebetso tse ngata liindastering tse fapaneng ho kenyeletsoa meriana, lijo, litlolo le kaho.E 'ngoe ea thepa ea eona e ikhethang ke bokhoni ba eona ba ho etsa li-gel tlas'a maemo a itseng.Ho utloisisa mocheso oa gelation oa HPMC ho bohlokoa bakeng sa ho ntlafatsa ts'ebeliso ea eona lits'ebetsong tse fapaneng.
Selelekela ho HPMC:
Hydroxypropyl methylcellulose (HPMC) ke semi-synthetic, inert, viscoelastic polymer e nkiloeng ho selulose.Hangata e sebelisoa e le motenya, stabilizer, emulsifier, le filimi ea pele ka lebaka la thepa ea eona e babatsehang ea ho etsa lifilimi le bokhoni ba ho fetola rheology ea tsamaiso ea metsi.HPMC e qhibiliha ka metsing a batang, 'me viscosity ea eona ea tharollo e itšetlehile ka lintlha tse kang boima ba limolek'hule, tekanyo ea ho fetola, le mahloriso.
Mokhoa oa Gelation:
Gelation e bolela ts'ebetso eo tharollo e fetohang gel ka eona, e bonts'a boitšoaro bo tiileng bo nang le bokhoni ba ho boloka sebōpeho sa eona.Tabeng ea HPMC, gelation hangata e etsahala ka mokhoa o susumetsoang ke mocheso kapa ka ho eketsoa ha lintho tse ling tse kang matsoai.
Lintho tse Amang Gelation:
Ho tsepamisa maikutlo hoa HPMC: Maemo a phahameng a HPMC ka kakaretso a lebisa ho jella ka potlako ka lebaka la ho eketseha ha likamano tsa polymer-polymer.
Boima ba Molek'hule: Boima ba limolek'hule tse phahameng tsa HPMC li-polymers li atisa ho theha li-gel habonolo ka lebaka la ho eketseha ha li-entanglements le litšebelisano tsa li-intermolecular.
Degree of Substitution: Tekanyo ea ho kenya sebaka, e bontšang boholo ba hydroxypropyl le methyl substitution mokokotlong oa cellulose, e ama mocheso oa gelation.Likhato tse phahameng tsa ho fetola li ka fokotsa mocheso oa gelation.
Ho ba Teng ha Letsoai: Matsoai a mang, a kang alkali metal chloride, a ka khothalletsa gelation ka ho sebelisana le liketane tsa polymer.
Mocheso: Mocheso o bapala karolo ea bohlokoa ho jellaneng.Ha mocheso o ntse o eketseha, liketane tsa polymer li fumana matla a kinetic, li thusa ho hlophisa bocha limolek'hule tse hlokahalang bakeng sa ho theha li-gel.
Thempereichara ea Gelation ea HPMC:
Mocheso oa mocheso oa HPMC o ka fapana ho latela lintlha tse 'maloa tse boletsoeng pejana.Ka kakaretso, li-gels tsa HPMC ka mocheso o kaholimo ho mocheso oa eona oa gelation, oo hangata o tlohang ho 50°C ho isa ho 90°C.Leha ho le joalo, mofuta ona o ka fapana haholo ho latela sehlopha se ikhethileng sa HPMC, mahloriso a eona, boima ba limolek'hule, le lintlha tse ling tsa sebopeho.
Lisebelisoa tsa HPMC Gels:
Meriana ea Meriana: Li-gel tsa HPMC li sebelisoa haholo mekhoeng ea meriana bakeng sa tokollo ea lithethefatsi e laoloang, lits'ebetso tsa lihlooho, le joalo ka li-modifiers tsa viscosity ka mefuta ea litekanyetso tsa mokelikeli.
Indasteri ea Lijo: Indastering ea lijo, li-gel tsa HPMC li sebelisoa e le li-thickeners, stabilizers, le li-gelling agents lihlahisoa tse fapaneng tse kang li-sauces, li-dessert le lihlahisoa tsa lebese.
Kaho: Li-gels tsa HPMC li fumana ts'ebeliso ea thepa ea kaho joalo ka lirekere tsa samente, moo li sebetsang e le li-agent tsa ho boloka metsi, ho ntlafatsa ts'ebetso le ho khomarela.
Cosmetics: Li-gel tsa HPMC li kenyellelitsoe mekhoeng ea litlolo tse kang litlolo, litlolo, le lihlahisoa tsa tlhokomelo ea moriri bakeng sa thepa ea tsona ea ho tiea le ho tsitsisa.
mocheso oa gelation oa HPMC o itšetlehile ka lintlha tse sa tšoaneng tse kenyeletsang mahloriso, boima ba limolek'hule, tekanyo ea ho fetola, le ho ba teng ha li-additives tse kang letsoai.Le hoja mocheso oa gelation ka kakaretso o oela ka har'a mocheso oa 50 ° C ho ea ho 90 ° C, o ka fapana haholo ho latela litlhoko tse khethehileng tsa ho etsoa.Ho utloisisa boits'oaro ba gelation ba HPMC ho bohlokoa bakeng sa ts'ebeliso ea eona e atlehileng lits'ebetsong tse fapaneng tsa meriana, lijo, kaho le liindasteri tsa litlolo.Lipatlisiso tse ling mabapi le lintlha tse susumetsang HPMC gelation li ka lebisa ntlafatsong ea liforomo tse ntlafalitsoeng le lits'ebetso tse ncha tsa polymer ena e sebetsang ka bongata.
Nako ea poso: Mar-28-2024