Nhazi kemịkalụ nke ihe ndị sitere na cellulose ether

Cellulose ethers bụ ihe sitere na cellulose, polysaccharide eke dị na mgbidi sel nke osisi. A na-amata nhazi kemịkalụ nke cellulose ethers site na iwebata otu ether dị iche iche site na mgbanwe kemịkalụ nke otu hydroxyl (-OH) dị na molekul cellulose. Ụdị cellulose ethers kachasị ewu ewu gụnyere:

Hydroxypropyl Methylcellulose (HPMC):
- Nhazi:
  - A na-emepụta HPMC site n'iji otu hydroxypropyl (-OCH2CHOHCH3) na otu methyl (-OCH3) dochie otu hydroxyl nke cellulose.
  - Ogo nke nnọchi (DS) na-egosi ọnụọgụgụ nke otu hydroxyl ejiri dochie anya otu glucose ọ bụla dị na yinye cellulose.
Cellulose Carboxymethyl(CMC):
- Nhazi:
  - A na-emepụta CMC site n'iwebata otu carboxymethyl (-CH2COOH) n'ime otu hydroxyl nke cellulose.
  - Otu carboxymethyl na-enye mmiri na njirimara anionic na cellulose yinye.
Selulose Hydroxyethyl (HEC):
- Nhazi:
  - A na-enweta HEC site na iji otu hydroxyethyl (-OCH2CH2OH) dochie otu hydroxyl nke cellulose.
  - Ọ na-egosipụta ike ịgbaze mmiri nke ọma na ihe ndị na-eme ka ọ sie ike.
Methyl Cellulose (MC):
- Nhazi:
  - A na-emepụta MC site n'itinye otu methyl (-OCH3) n'ime otu hydroxyl nke cellulose.
  - A na-ejikarị ya eme ihe maka idobe mmiri na ihe ndị na-emepụta ihe nkiri.
Ethyl Cellulose (EC):
- Nhazi:
  - A na-emepụta EC site n'iji otu ethyl (-OC2H5) dochie otu hydroxyl nke cellulose.
  - A maara ya maka enweghị ike ịgbaze na mmiri, a na-ejikarị ya eme ihe n'imepụta ihe mkpuchi na ihe nkiri.
Selulose Hydroxypropyl (HPC):
- Nhazi:
  - A na-enweta HPC site n'iwebata otu hydroxypropyl (-OCH2CHOHCH3) n'ime otu hydroxyl nke cellulose.
  - A na-eji ya dị ka ihe na-ejikọ ihe, ihe nkiri, na ihe na-agbanwe viscosity.

Nhazi a kapịrị ọnụ dị iche iche maka ihe ndị sitere na cellulose ether ọ bụla dabere na ụdị na ogo nnọchi nke ewebatara n'oge usoro mgbanwe kemịkalụ. Mwebata nke otu ether ndị a na-enye ihe onwunwe pụrụ iche na cellulose ether ọ bụla, na-eme ka ha dabara adaba maka ngwa ụlọ ọrụ dị iche iche.

Oge ozi: Jenụwarị-21-2024