Chemical chimiro che cellulose ether erivatives

Chemical chimiro che cellulose ether erivatives

Cellulose ana ana ana vana vanobva m cellulose, polysaccharide inowanikwa mumasero emasero. Chemakemi chimiro che cellulose ana vana chinoratidzwa nekusuma kwemapoka akasiyana-siyana kuburikidza nemakemikari kugadziridzwa kweiyo hydroxyl (-oh) mapoka aripo mumheremalose molecule. Mhando dzakajairika dze cellulose aungana unosanganisira:

  1. Hydroxyprusyl methylcellose (HPMC):
    • Chimiro:
      • HPMC iri kugadzirira nekutsiva iyo hydroxyl mapoka e cellulose ine hydroxypropropyl (-Och2chohch3) uye methyl (-Och3) mapoka.
      • Dhigirii rekutsiva
  2. CarboxyMethyl Cellulose(Cmc):
    • Chimiro:
      • CMC inogadzirwa nekuunza carboxymethyl (-ch2cooh) mapoka kune mapoka e hydroxyl mapoka emheremalose.
      • Iyo carboxymethyl mapoka anoisa mvura solubility uye anonic hunhu kune celluloseketeni.
  3. HydroxytHyl Cellulose (Hec):
    • Chimiro:
      • Hec inotorwa nekutsiva iyo hydroxyl mapoka emheremalose ine hydroxyethyl (-Och2ch2oh) mapoka.
      • Iyo inoratidzira yakavandudza mvura solubility uye yakakora nzvimbo.
  4. MetHyl Cellulose (MC):
    • Chimiro:
      • MC inogadzirwa nekuunza methyl (-Och3) mapoka kune iyo hydroxyl mapoka emheremellose.
      • Inowanzo shandiswa kune yayo yekuchengetwa kwemvura uye mafirimu ekuumba mafirimu.
  5. Ethyl Cellulose (EC):
    • Chimiro:
      • EC iri yakanyorwa nekutsiva iyo hydroxyl mapoka emherekuru neEdyl (-oc2H5) mapoka.
      • Izvo zvinozivikanwa nekuda kwekunzwa kwayo mumvura uye kunowanzoshandiswa mukugadzirwa kwejasi uye mafirimu.
  6. Hydroxyprusyl Cellulose (HPC):
    • Chimiro:
      • HPC inotorwa nekuburitsa hydroxyprupyl (-Och2chohch3) mapoka kune iyo mapoka ehydroxyl mapoka emheremalose.
      • Iyo inoshandiswa seye binder, firimu raimbova, uye viscosity modifier.

Chimiro chaicho chakasiyana chega ega cellulose ether inobva pane mhando uye degree rekutsiva rakaiswa panguva yemakemikari kugadzirisa maitiro. Nhungamiro yeiyi mapoka ether inopa chaiyo nzira kune yega yega cellulose ether, ichiita kuti vakwanise kuve vakaringana maindasitiri ekushandisa.

Kutumira Nguva: Jan-21-2024