Kemikari chimiro che cellulose ether derivatives

Cellulose ethers zvinobva kune cellulose, yakasikwa polysaccharide inowanikwa mumasero madziro emiti. Chimiro chemakemikari e-cellulose ethers chinoratidzwa nekuunzwa kwemapoka akasiyana-siyana ether kuburikidza nekugadzirisa kemikari yemapoka e-hydroxyl (-OH) ari mu cellulose molecule. Mhando dzakajairika dze cellulose ether dzinosanganisira:

1. Hydroxypropyl Methylcellulose (HPMC):
   • Chimiro:
     • HPMC inogadzirwa nekutsiva mapoka ehydroxyl e cellulose neese hydroxypropyl (-OCH2CHOHCH3) uye methyl (-OCH3) mapoka.
     • Iyo dhigirii yekutsiva (DS) inoratidza avhareji nhamba yeanotsiviwa hydroxyl mapoka paglucose unit mucheni ye cellulose.
2. Carboxymethyl cellulose(CMC):
   • Chimiro:
     • CMC inogadzirwa nekuunza carboxymethyl (-CH2COOH) mapoka kumapoka ehydroxyl e cellulose.
     • Iwo mapoka ecarboxymethyl anopa kunyungudika kwemvura uye anionic hunhu kune cellulose cheni.
3. Hydroxyethyl Cellulose (HEC):
   • Chimiro:
     • HEC inotorwa nekutsiva hydroxyl mapoka e cellulose ne hydroxyethyl (-OCH2CH2OH) mapoka.
     • Inoratidza yakagadziridzwa solubility yemvura uye thickening zvivakwa.
4. Methyl Cellulose (MC):
   • Chimiro:
     • MC inogadzirwa nekuunza methyl (-OCH3) mapoka kumapoka ehydroxyl e cellulose.
     • Inowanzoshandiswa pakuchengetedza mvura uye firimu-kugadzira zvinhu.
5. Ethyl Cellulose (EC):
   • Chimiro:
     • EC inogadzirwa nekutsiva mapoka ehydroxyl e cellulose ne ethyl (-OC2H5) mapoka.
     • Iyo inozivikanwa nekusanyungudika kwayo mumvura uye inowanzoshandiswa mukugadzira machira nemafirimu.
6. Hydroxypropyl Cellulose (HPC):
   • Chimiro:
     • HPC inotorwa nekuunza hydroxypropyl (-OCH2CHOHCH3) mapoka kumapoka ehydroxyl e cellulose.
     • Inoshandiswa sebhainda, firimu rekare, uye viscosity modifier.

Iyo chaiyo chimiro inosiyana kune yega yega cellulose ether derivative zvichienderana nerudzi uye dhigirii rekutsiva rakaunzwa panguva yekuchinja kwemakemikari maitiro. Kuunzwa kweaya mapoka eether kunopa chaiwo zvivakwa kune yega cellulose ether, zvichiita kuti ive yakakodzera kune akasiyana maindasitiri ekushandisa.