Qaab-dhismeedka kiimikada ee noocyada kala duwan ee cellulose ether

Ether-yada Cellulose waa wax soo saar ka soo jeeda cellulose, polysaccharide dabiici ah oo laga helo darbiyada unugyada dhirta. Qaab-dhismeedka kiimikada ee ether-yada cellulose waxaa lagu gartaa soo bandhigida kooxo ether kala duwan iyada oo loo marayo wax ka beddelka kiimikada ee kooxaha hydroxyl (-OH) ee ku jira molecule-ka cellulose. Noocyada ugu badan ee ether-yada cellulose waxaa ka mid ah:

1. Hydroxypropyl Methylcellulose (HPMC):
   • Qaab-dhismeedka:
     • HPMC waxaa lagu sameeyaa iyadoo lagu beddelayo kooxaha hydroxyl ee cellulose labada kooxood ee hydroxypropyl (-OCH2CHOHCH3) iyo methyl (-OCH3).
     • Heerka beddelka (DS) wuxuu tilmaamayaa celceliska tirada kooxaha hydroxyl ee la beddelay cutubkiiba gulukooska ee silsiladda cellulose.
2. Cellulose-ka Carboxymethyl(CMC):
   • Qaab-dhismeedka:
     • CMC waxaa lagu soo saaraa iyadoo kooxaha carboxymethyl (-CH2COOH) lagu soo daro kooxaha hydroxyl ee cellulose.
     • Kooxaha carboxymethyl waxay si siman biyaha iyo dabeecadda anionic ugu qaybiyaan silsiladda cellulose.
3. Haydroxyethyl Cellulose (HEC):
   • Qaab-dhismeedka:
     • HEC waxaa laga helaa iyadoo lagu beddelayo kooxaha hydroxyl ee cellulose kooxaha hydroxyethyl (-OCH2CH2OH).
     • Waxay muujinaysaa milmida biyaha iyo sifooyinka dhumucda.
4. Methyl Cellulose (MC):
   • Qaab-dhismeedka:
     • MC waxaa lagu soo saaraa iyadoo kooxaha methyl (-OCH3) lagu soo bandhigo kooxaha hydroxyl ee cellulose.
     • Waxaa badanaa loo isticmaalaa ilaalinta biyaha iyo sifooyinka sameynta filimada.
5. Ethyl Cellulose (EC):
   • Qaab-dhismeedka:
     • EC waxaa lagu sameeyaa iyadoo lagu beddelayo kooxaha hydroxyl ee cellulose kooxaha ethyl (-OC2H5).
     • Waxaa loo yaqaanaa in aysan ku milmi karin biyaha, waxaana badanaa loo isticmaalaa soo saarista dahaarka iyo filimada.
6. Cellulose-ka Hydroxypropyl (HPC):
   • Qaab-dhismeedka:
     • HPC waxaa laga helaa iyadoo kooxaha hydroxypropyl (-OCH2CHOHCH3) lagu soo bandhigo kooxaha hydroxyl ee cellulose.
     • Waxaa loo isticmaalaa sidii qalab duuban, filim duuban, iyo wax ka beddele viscosity.

Qaab-dhismeedka gaarka ah wuu ku kala duwan yahay nooc kasta oo ka mid ah unugyada ether ee cellulose iyadoo lagu saleynayo nooca iyo heerka beddelka la soo bandhigay inta lagu jiro habka wax ka beddelka kiimikada. Soo bandhigidda kooxahan ether waxay siisaa sifooyin gaar ah ether kasta oo cellulose ah, taasoo ka dhigaysa kuwo ku habboon codsiyada warshadaha kala duwan.