Hydroxypropyl methylcellulose (HPMC) ipolymer inoshandiswa zvakasiyana-siyana ine hunhu hwe hydrophobic ne hydrophilic, zvichiita kuti ive yakasiyana mumhando dzakasiyana dzemashandisirwo mumaindasitiri akasiyana. Kuti tinzwisise hydrophobic ne hydrophilic ye HPMC, tinofanira kudzidza chimiro chayo, hunhu hwayo uye mashandisirwo ayo zvakadzama.
Maumbirwo ehydroxypropyl methylcellulose:
HPMC inobva mu cellulose, polymer yechisikigo inowanikwa mumadziro emasero emiti. Kugadziriswa kwe cellulose kunosanganisira kuiswa kwe hydroxypropyl ne methyl groups mumusana we cellulose. Kugadziriswa uku kunoshandura hunhu hwe polymer, zvichipa hunhu hwakasiyana hunobatsira pakushandiswa kwakasiyana-siyana.
Kunyungudika kwemvura kweHPMC:
Hydroxy:
HPMC ine mapoka ehydroxypropyl uye inopfava. Mapoka aya ehydroxyl ane hukama hwakakura nemamorekuru emvura nekuda kwekubatana kwehydrogen.
Boka rehydroxypropyl rinogona kuumba zvisungo zvehydrogen nemamorekuru emvura, zvichiita kuti HPMC isununguke mumvura kusvika pamwero wakati.
methyl:
Kunyange zvazvo boka re methyl richibatsira mukukanganiswa kwemvura nemorekuru, harirwisani nekukanganiswa kwemvura neboka re hydroxypropyl.
Boka re methyl harina polar, asi kuvapo kweboka re hydroxypropyl kunosarudza hunhu hwe hydrophilic.
Kusatya mvura kweHPMC:
methyl:
Mapoka emethyl ari muHPMC anoona kuti haapindi mvura zvakanyanya.
Kunyangwe zvisingatyisi mvura zvakanyanya semamwe mapolymer akagadzirwa zvizere, kuvapo kwemapoka emethyl kunoderedza hydrophilicity yeHPMC.
Hunhu hwekugadzira mafirimu:
HPMC inozivikanwa nekugadzira firimu uye inowanzoshandiswa mumishonga uye muzvishongedzo. Kusashandisa mvura kunobatsira pakuumbwa kwefirimu rinodzivirira.
Kudyidzana nezvinhu zvisiri zvepolar:
Mune mamwe mashandisirwo, HPMC inogona kusangana nezvinhu zvisiri zvepolar nekuda kwekusagadzikana kwayo mumvura. Hunhu uhwu hwakakosha kune masisitimu ekutumira mishonga muindasitiri yemishonga.
Mashandisirwo eHPMC:
mushonga:
HPMC inoshandiswa zvakanyanya mumishonga semuchina wekubatanidza, kugadzira firimu, uye kugadzirisa viscosity. Kugona kwayo kugadzira firimu kunoita kuti mishonga ibude zvakanaka.
Inoshandiswa mumhando dzakasimba dzemushonga dzakaita semapiritsi nemakapisi.
Indasitiri yekuvaka:
Muchikamu chekuvaka, HPMC inoshandiswa muzvigadzirwa zvesimende kuvandudza kushanda zvakanaka, kuchengetedza mvura uye kunamira.
Kunyungudika kwemvura kunobatsira kuchengetedza mvura, ukuwo kunyungudika kwemvura kunobatsira kunatsiridza kunamira.
indasitiri yezvekudya:
HPMC inoshandiswa semushonga wekukora uye wekugadzira majeli muindasitiri yezvikafu. Hunhu hwayo hwemvura hunobatsira kugadzira majeli akasimba uye kudzora kusimba kwezvigadzirwa zvekudya.
runako:
Mukugadzira zvinhu zvekushongedza, HPMC inoshandiswa muzvigadzirwa zvakaita semakirimu nemafuta ekuzora nekuda kwehunhu hwayo hwekugadzira firimu nekukora.
Kunyungudika kwemvura kunoita kuti ganda rive nemvura yakakwana.
mhedziso:
HPMC ipolymer inonyungudika mumvura uye inonyungudika mumvura. Kuenzana pakati pema hydroxypropyl ne methyl groups muchimiro chayo kunoita kuti ive nekushanda kwakasiyana-siyana, zvichiita kuti ive nekushandiswa kwakasiyana-siyana. Kunzwisisa hunhu uhwu kwakakosha pakugadzirisa HPMC kuti ienderane nemashandisirwo chaiwo mumaindasitiri akasiyana, uko kugona kweHPMC kushanda nemvura nezvinhu zvisiri zvepolar kunoshandiswa pazvinangwa zvakasiyana-siyana.
Nguva yekutumira: Zvita-15-2023