Hydroxypropypropinyl Methylcelllulolose (HPMC) le methyl hydroullese (mHEC) Na lintlha tsa indasteri Leha ho na le ho tšoanang maemong a bona a lik'hemik'hale le likopo, ho na le phapang e fapaneng pakeng tsa tsena tse peli.
1. Likhatiso tsa lik'hemik'hale:
HPMC (HydroxypropypropyL methylcellOlolose): HPMC ke polymer ea semileng e tsoang cellulose. E hlahisoa ka phetoho ea lik'hemik'hale ea cellular, haholo-holo e ile ea ntša le lintoeng tsa lehong kapa li-k'honthimithara tse ngata. Boemo bo kenyelletsang ho thothomela le alkali, bo lateloang ke masholu le lithyl chloride le lihlopha tsa methyl le lihlopha tsa methyl.
MHC (Methyl hydrousethyl cellulolose): MHEC hape Ether Ether Ether Ether Ether At kafatso ea Climloulose. E tšoanang le ea HPMC, e tsoela pele ho hlahisa methyl le hydroxyethyl lihlopha ho sehlopha sa mokokotlo oa selefounu. MHC e entsoe ka kutu ea seleng ea Alkali, ea lateloang ke masela le methyl chloride le ergylene oxide.
2. KHOTSO EA CHEMAMER:
Le ha HPMC le MHC A arolelana le Cellulo Slibune, e fapana ka mofuta le torong ea lihlopha tse ntjha tse ntjha tse ntjhang tse hokahaneng le mokokotlo ona.
Hpmc sebopeho:
Lihlopheng tsa Hydroxypropyl (-ch2choHhk3) le Lihlopheng tsa Methyl (-ch3) li ajoa ka tlasa ketane ea cellulo.
Karolelano ea hydroxypropyl ke lihlopha tsa methyl li fapana ho latela ts'ebetso ea tlhahiso le thepa e lakatsehang.
Sebopeho sa MHEC:
Methyl le hydroxyethyl lihlopha (-ch2choHhc1
Karolelano ea methyl ho tsa hydroxethyl lihlopha tse ka fetoloang nakong ea syntthesis ho fihlela thepa e itseng.
3. Thepa:
PPMMC Properties:
HPMC e bonts'a sokollong e phahameng ea metsi, e theha litharollo tse pepenoang le tse shebahalang.
E na le thepa e ntle haholo ea lifilimi, e etsa hore e be e loketseng likopo tse hlokang ho koahela baesekopo.
HPMC e fana ka moea o motle le thepa e tlamang, ho ntlafatsa bongoli ho lifohlophisi tse fapaneng.
Visionity ea tharollo ea hpmc e ka tsamaisana ka ho fetola boima ba sebaka le bositaba.
Thepa ea mhc:
MHC e boetse e bontša qubu ea metsi, empa sello sa eona se ka fapana ho latela tekanyo ea sebaka le mocheso.
E bapala tharollo e hlakileng ka boits'oaro ba pseudoplastic, ho bontša lintho tsa maiketsetso tse tšesaane.
MHC e fana ka litlamorao tse ntlehali tsa ho holisa le ho tsitsisa litsamaiso tse se nang thuso.
Joaloka hpmc, vicosity of MHEC tharollo e ka laoloa ka ho fetola boemo ba sebaka le semolao.
4. Likopo:
Litšireletso tsa HPMC:
Indasteri ea kaho: HPMC e sebelisoa haholo malapeng a thehiloeng ho ammuso, le lik'hamphani tse thehiloeng ho ntlafatsa ho tsoela molemo, ho boloka metsi le ho tšoarella.
Meriana: HPMC e sebelisoa ka har'a likhathatso tsa letlapa, likhakanyo tse laoloang, le litokisetso tsa lithaba le lihlooho tsa eona tsa lifilimi le mucadheve.
Lijo le litlolo: HPMC ke Moemeli ea Matlafatsang, Setepano le Emulizer Lihlahisoa tsa Lijo, Lintho tsa Tlhokomelo ea Botho le Litseiti tsa Botho le Litlolo tsa Botho.
Litšireletso tsa MHEC:
Indasteri ea kaho: MHEC e sebelisoa hangata ka mekhoa e mateaneng e kang likhakanyo tsa matla, litheolelo, li tsoele pele ho boloka metsi, ho ba le liphetoho le ho tšoarela.
Patets le bosholu ba eona: MHEC e sebelisoa e le mosebeletsi oa Rheology e nang le lipere tse thehiloeng metsing, bosholu ba ho laola pono, ba thibela ho qhekella, le ho ntlafatsa thepa ea kopo.
Likhatiso tsa pharmaceutical: MHEC e fumana likopo ho lipelaelo, litokisetso tsa li-pharmalmic, le liforomo tsa dosages tse laoloang e le ho hlakoloa le ho hlasimolla.
5. Melemo:
Melemo ea HPMC:
HPMC e fana ka thepa e etsang lintho tse phahameng tsa lifilimi, e etsang hore e tšoaneloe ke likokoana-hloko tsa letlapa le mekhoa e laoloang e laoloang.
E bontša khotheho e ntle ea litšobotsi tse tlamang le tse tlamang, tse ntlafatsa bompoli ba liforomo tse fapaneng.
HPMC e fana ka sebopeho sa ho fetola Visiscossity le ho fetola thepa ea tharollo.
Melemo ea MHEC:
MHC e bonts'a litlamorao tse ikhethang le tse tsitsitseng li tsamaisana le lits'ebetso tse senyehileng, li etsa hore e loketse ho penta, kaho le likhakanyo tsa meriana.
E fana ka thepa e ntle ea metsi a ho boloka metsi, ho ntlafatsa ho ntlafatsa le ho mamella lihlahisoa tse thehiloeng sammente.
MHC e fana ka boits'oaro ba pseudoplar, ho lumella tšebeliso e bonolo le litšobotsi tse ntlafalitsoeng tsa phallo ea bokooa le lipereneng.
while both HPMC and MHEC are cellulose ethers with similar applications, they exhibit differences in their chemical compositions, structures, properties, and advantages. HPMC e tsejoa ka thepa e ntle ea lifilimi le ho bapisa tsa filimi e ntle ea filimi ea baesekopo, athe thepa ea hau, athe a ipabola ka matla, a tsitsitseng le ho boloka metsi. Ho utloisisa linohala tsena ho bohlokoa bakeng sa ho khetha nomoro e loketseng ea cellulose bakeng sa lits'ebetso tse tobileng indastering e fapaneng.
Poso: Feb-18-2025