Isakhiwo samakhemikhali sokuphuma kokuphuma kwe-cellulose ether

I-cellulose ethers iphuma ku-cellulose, i-polysaccharide yemvelo etholakala ezindongeni zamaseli ezitshalo. Isakhiwo samakhemikhali se-cellulose ethers sibonakala ngokusungulwa kwamaqembu e-ether ahlukahlukene ngokuguqulwa kwamakhemikhali kwamaqembu e-hydroxyl (-OH) akhona ku-molecule ye-cellulose. Izinhlobo ezivame kakhulu ze-cellulose ethers zihlanganisa:

1. IHydroxypropyl Methylcellulose (HPMC):
   • Isakhiwo:
     • I-HPMC ihlanganiswa ngokufaka esikhundleni samaqembu e-hydroxyl we-cellulose nawo womabili amaqembu e-hydroxypropyl (-OCH2CHOHCH3) kanye ne-methyl (-OCH3).
     • I-degree of substitution (DS) ibonisa inani elimaphakathi lamaqembu e-hydroxyl afakwe esikhundleni ngeyunithi ngayinye ye-glucose ochungechungeni lwe-cellulose.
2. I-Carboxymethyl Cellulose(CMC):
   • Isakhiwo:
     • I-CMC ikhiqizwa ngokwethula amaqembu e-carboxymethyl (-CH2COOH) emaqenjini e-hydroxyl e-cellulose.
     • Amaqembu e-carboxymethyl anikeza ukuncibilika kwamanzi kanye nezinhlamvu ze-anionic ochungechungeni lwe-cellulose.
3. I-Hydroxyethyl Cellulose (HEC):
   • Isakhiwo:
     • I-HEC itholakala ngokufaka amaqembu e-hydroxyl we-cellulose esikhundleni samaqembu e-hydroxyethyl (-OCH2CH2OH).
     • Ibonisa ukuncibilika kwamanzi okuthuthukisiwe kanye nezakhiwo zokujiya.
4. I-Methyl Cellulose (MC):
   • Isakhiwo:
     • I-MC ikhiqizwa ngokwethula amaqembu e-methyl (-OCH3) emaqenjini e-hydroxyl e-cellulose.
     • Ngokuvamile isetshenziselwa ukugcinwa kwamanzi kanye nezakhiwo zefilimu.
5. I-Ethyl Cellulose (EC):
   • Isakhiwo:
     • I-EC ihlanganiswa ngokufaka amaqembu e-hydroxyl we-cellulose esikhundleni samaqembu e-ethyl (-OC2H5).
     • Iyaziwa ngokungancibiliki kwayo emanzini futhi ivame ukusetshenziselwa ukukhiqizwa kwezingubo namafilimu.
6. I-Hydroxypropyl Cellulose (HPC):
   • Isakhiwo:
     • I-HPC itholakala ngokwethula amaqembu e-hydroxypropyl (-OCH2CHOHCH3) emaqenjini e-hydroxyl e-cellulose.
     • Isetshenziswa njenge-binder, ifilimu yangaphambili, ne-viscosity modifier.

Isakhiwo esithile siyahlukahluka kokuphuma kokunye okuphuma ku-cellulose ether ngokusekelwe ohlotsheni nezinga lokushintsha elethulwa phakathi nenqubo yokuguqulwa kwamakhemikhali. Ukwethulwa kwala maqembu e-ether kunikeza izici ezithile ku-cellulose ether ngayinye, okuwenza afanelekele ukusetshenziswa kwezimboni ezihlukahlukene.