Hydroxypropyl Methylcellulose (HPMC) ke polymer e nang le mesebetsi e mengata e sebelisang matla a mangata indastering e fapaneng, ho kenyeletsoa meriana, lijo, kaho le litlolo.
1. Selelekela ho HPMC:
Hydroxypropyl Methylcellulose (HPMC) ke polymer e entsoeng ka halofo, e sa sebetseng, e nang le viscoelastic e nkiloeng ho cellulose. E etsoa ka phetoho ea lik'hemik'hale ea cellulose, e kenyeletsang ho fetoha ha alkali cellulose ka propylene oxide le methyl chloride. Sehlahisoa se hlahang ke phofo e tšoeu ho isa ho e tšoeu, e se nang monko le e se nang tatso e qhibilihang ka metsing empa e sa qhibiliheng ka har'a metsoako ea lintho tse phelang.
2. Sebopeho le Thepa:
Sebopeho sa HPMC se na le mokokotlo oa cellulose, polymer ea tlhaho e entsoeng ka li-unit tsa glucose tse hokahantsoeng ke litlamo tsa glycosidic tsa β(1→4). Ho HPMC, lihlopha tse ling tsa hydroxyl liyuniting tsa glucose li nkeloa sebaka ke lihlopha tsa 2-hydroxypropyl le methyl. Phetoho ena e fetola thepa ea polymer ha e bapisoa le cellulose ea tlhaho, e fanang ka ntlafatso ea ho qhibiliha, ho teteana le bokhoni ba ho etsa filimi.
Thepa ea HPMC e fapana ho latela lintlha tse kang tekanyo ea phetolo (DS), boima ba limolek'hule, le kabo ea boholo ba likaroloana. Ka kakaretso, HPMC e bontša:
Thepa e ntle haholo ea ho etsa filimi
Boitšoaro ba ho futhumatsa ha mocheso
Bokhoni bo phahameng ba ho boloka metsi
Ho tsitsa holim'a mefuta e mengata ea pH
Ho lumellana le li-polymer tse ling le li-additives
Tlhaho e seng ea ionic, e etsang hore e lumellane le metsoako e fapaneng
3. Ho kopanngoa ha HPMC:
Ho kopanngoa ha HPMC ho kenyelletsa mehato e 'maloa:
Tokisetso ea alkali cellulose: Cellulose e phekoloa ka tharollo ea alkaline ho etsa alkali cellulose.
Etherification: Alkali cellulose e arabela le propylene oxide le methyl chloride ho hlahisa hydroxypropyl le lihlopha tsa methyl mokokotlong oa cellulose.
Ho hlatsoa le ho hloekisa: Sehlahisoa se hlahang sea hlatsuoa, sea hloekisoa, 'me sea hloekisoa ho tlosa litšila.
Ho omisa: HPMC e hloekisitsoeng e a omiswa ho fumana sehlahisoa sa ho qetela ka mokhoa oa phofo.
4. Litšebeliso tsa HPMC:
HPMC e fumana lits'ebetso tse pharaletseng liindastering tse fapaneng:
Meriana: HPMC e sebelisoa haholo e le mothusi oa meriana ho lipente tsa matlapa, mekhoa e laoloang ea ho lokolla, litokisetso tsa mahlo le li-suspension. E sebetsa e le motsoako, sethibela-khatello, se etsang filimi, le moemeli oa ho lokolla o tšoarellang ka mefuta e fapaneng ea litekanyetso.
Indasteri ea Lijo: Indastering ea lijo, HPMC e sebelisoa e le sesebelisoa sa ho teteanya, ho tsitsisa, ho emulsifier le ho boloka mongobo lihlahisoa tse kang lintho tse besitsoeng, lihlahisoa tsa lebese, lisoso le lijo tse tsoekere. E ntlafatsa sebopeho, nako ea ho boloka lijo, le maikutlo a molomo lihlahisoa tsa lijo.
Kaho: HPMC ke motsoako oa bohlokoa thepa ea kaho e kang li-mortar tse thehiloeng samenteng, likhomaretsi tsa thaele, le lihlahisoa tse thehiloeng gypsum. E sebetsa e le sesebelisoa sa ho boloka metsi, e ntlafatsa ho sebetsa hantle, e fokotsa ho thella, 'me e ntlafatsa ho khomarela mefuteng ea kaho.
Litlolo: HPMC e sebelisoa litlolong le lihlahisoa tsa tlhokomelo ea botho e le ntho e tenyang, e tsitsisang, le e etsang filimi lihlahisoa tse kang li-cream, li-lotion, li-shampoo le li-gel. E fana ka viscosity, e ntlafatsa sebopeho, 'me e fana ka maikutlo a boreleli, a se nang mafura.
Ditshebediso tse ding: HPMC e boetse e sebediswa kgatisong ya masela, diseramiki, dipente, disepa, le jwalo ka setlolo ditsamaisong tse fapaneng tsa indasteri.
5. Maikutlo le Liphephetso tsa Nakong e Tlang:
Tlhoko ea HPMC e lebelletsoe ho tsoela pele ho hola ka lebaka la thepa ea eona e feto-fetohang le lits'ebetso tse fapaneng. Leha ho le joalo, liphephetso tse kang ho feto-fetoha ha litheko tsa thepa e tala, lithibelo tsa taolo, le tlholisano ho tsoa ho li-polymer tse ling li ka ama matla a 'maraka. Maiteko a lipatlisiso a shebane le ho ntlafatsa ts'ebetso ea HPMC, ho hlahloba litsela tsa ho kopanya tse tsitsitseng, le ho atolosa lits'ebetso tsa eona masimong a macha a kang biomedicine le nanotechnology.
Hydroxypropyl Methylcellulose (HPMC) ke polymer ea bohlokoa e nang le mefuta e mengata ea lits'ebetso ho pholletsa le liindasteri tse ngata. Sebopeho sa eona se ikhethang, thepa le tlhahiso ea eona li etsa hore e be motsoako oa bohlokoa meriana, lihlahisoa tsa lijo, thepa ea kaho, litlolo le lits'ebetso tse fapaneng tsa indasteri. Ha boiteko ba lipatlisiso le nts'etsopele bo ntse bo tsoela pele, HPMC e ikemiselitse ho lula e le sebapali sa bohlokoa indastering ea polymer, e fana ka litharollo tse ncha ho fihlela litlhoko tsa 'maraka tse ntseng li fetoha.
Nako ea poso: Hlakubele-05-2024