E le ho bapisa CMC (carboxymethylcellulose) le HPMC (hydroxypropylmethylcellulose), re hloka ho utloisisa thepa ea tsona, lits'ebetso, melemo, mefokolo, le maemo a ka sebelisoang. Li-derivatives tsa cellulose ka bobeli li sebelisoa haholo liindastering tse fapaneng, ho kenyeletsoa meriana, lijo, litlolo le kaho. E 'ngoe le e 'ngoe e na le thepa e ikhethang e li etsang hore li lokele merero e fapaneng. A re etseng papiso e tebileng e felletseng ho bona hore na ke efe e betere maemong a fapaneng.
1. Tlhaloso le sebopeho:
CMC (carboxymethylcellulose): CMC ke setlolo se qhibilihang ka metsing se hlahisoang ke karabelo ea cellulose le chloroacetic acid. E na le lihlopha tsa carboxymethyl (-CH2-COOH) tse hokahaneng le tse ling tsa lihlopha tsa hydroxyl tsa li-monomers tsa glucopyranose tse etsang mokokotlo oa cellulose.
HPMC (hydroxypropyl methylcellulose): HPMC hape ke setlolo se qhibilihang ka metsing se hlahisoang ka ho phekola cellulose ka propylene oxide le methyl chloride. E na le lihlopha tsa hydroxypropyl le methoxy tse hoketsoeng mokokotlong oa cellulose.
2. Ho qhibiliha ha metsi:
CMC: E qhibiliha haholo metsing, e etsa tharollo e bonaletsang, e tiileng. E bontša mokhoa oa phallo ea pseudoplastic, e leng se bolelang hore viscosity ea eona ea fokotseha tlas'a khatello ea ho shear.
HPMC: E boetse e qhibiliha ka metsing, e etsa tharollo e nang le viscous hanyane ho feta CMC. E boetse e bontša boitšoaro ba pseudoplastic.
3. Thepa ea rheological:
CMC: E bonts'a mokhoa oa ho fokotsa ho kuta, ho bolelang hore ho teteana ha eona hoa fokotseha ha sekhahla sa ho kuta se ntse se eketseha. Thepa ena e etsa hore e lokele lits'ebetso moo ho hlokahalang ho teteana empa tharollo e hloka ho phalla habonolo tlas'a ho kuta, joalo ka pente, sesepa le meriana.
HPMC: e na le boits'oaro bo tšoanang ba rheological le CMC, empa viscosity ea eona hangata e phahame ha e le maemong a tlase. E na le thepa e betere ea ho etsa filimi, e leng se etsang hore e lokele lits'ebetso tse kang lipente, likhomaretsi le mekhoa ea meriana e laoloang.
4. Botsitso:
CMC: Ka kakaretso e tsitsitse hodima mefuta e mengata ya pH le mocheso. E ka mamella maemo a mahareng a di-electrolyte.
HPMC: E tsitsitse ho feta CMC tlasa maemo a asiti, empa e ka feta hydrolysis tlasa maemo a alkaline. E boetse e na le kutloelo-bohloko ho divalent cations, e ka bakang gelation kapa pula.
5. Kopo:
CMC: e sebelisoa haholo e le sethibisi, se tsitsitseng le moemeli oa ho boloka metsi lijong (joalo ka ice cream, sauce), meriana (joalo ka matlapa, suspension) le liindasteri tsa litlolo (joalo ka tranelate, lotion).
HPMC: E sebediswa hangata thepa ya kaho (mohlala, dikhomaretsi tsa dithaele tsa samente, plaster, seretse), meriana (mohlala, matlapa a lokollwang ka taolo, ditokisetso tsa mahlo), le ditlolo (mohlala, marothodi a mahlo, dihlahiswa tsa tlhokomelo ya letlalo).
6. Chefo le polokeho:
CMC: Ka kakaretso e tsejoa e le e sireletsehileng (GRAS) ke mekhatlo ea taolo ha e sebelisoa ka har'a meeli e boletsoeng lijong le lits'ebetsong tsa meriana. E bola ebile ha e na chefo.
HPMC: E boetse e nkoa e bolokehile bakeng sa tšebeliso ka har'a meeli e khothaletsoang. E lumellana le 'mele 'me e sebelisoa haholo lefapheng la meriana e le sesebelisoa sa ho lokolla se laoloang le se kopanyang matlapa.
7. Litšenyehelo le Boteng ba tsona:
CMC: Hangata e theko e tlase ho feta HPMC. E fumaneha habonolo ho bafepedi ba fapaneng lefatšeng ka bophara.
HPMC: E theko e boima hanyane ka lebaka la ts'ebetso ea eona ea tlhahiso 'me ka linako tse ling phepelo e fokolang ho tsoa ho bafepedi ba itseng.
8. Tšusumetso ea tikoloho:
CMC: E bola, e nkiloeng mehloling e nchafatsoang (cellulose). E nkoa e le mosa tikolohong.
HPMC: Hape e ka bola 'me e tsoa ho cellulose, kahoo e boetse e sireletsa tikoloho haholo.
CMC le HPMC ka bobeli li na le thepa e ikhethang e li etsang hore e be li-additi tsa bohlokoa liindastering tse ngata. Khetho pakeng tsa tsona e itšetlehile ka litlhoko tse itseng tsa ts'ebeliso tse kang ho qhibiliha, ho teteana, botsitso le litšenyehelo. Ka kakaretso, CMC e ka 'na ea khethoa ka lebaka la litšenyehelo tsa eona tse tlase, botsitso bo pharaletseng ba pH, le ho tšoaneleha bakeng sa lijo le lits'ebetso tsa litlolo. HPMC, ka lehlakoreng le leng, e ka 'na ea ratoa ka lebaka la ho teteana ha eona ho hoholo, litšobotsi tse betere tsa ho etsa filimi, le ts'ebeliso meriana le thepa ea kaho. Qetellong, khetho e lokela ho ipapisa le ho nahana ka botlalo ka lintlha tsena le ho lumellana le ts'ebeliso e reriloeng.
Nako ea poso: Hlakola-21-2024