Sifooyinka Kiimikaad ee Cellulose Ethers

Eter-ka cellulosesoo bandhiga noocyo kala duwan oo ah sifooyinka physicochemical kuwaas oo ka dhigaya kuwo la taaban karo oo qiimo leh codsiyo kala duwan.Guryaha gaarka ah way kala duwanaan karaan iyadoo ku xiran nooca cellulose ether, heerka beddelka, iyo arrimo kale.Waa kuwan qaar ka mid ah sifooyinka physicochemical ee muhiimka ah ethers cellulose:

1. Xalka:
   • Solubility Water: Ether-ka Cellulose guud ahaan waa biyo-milmi kara, taas oo ah sifo aasaasi ah oo ka dhigaysa inay ku habboon yihiin codsiyo kala duwan.Solubility waxay ku kala duwanaan kartaa soosaarayaal kala duwan.
2. Viscosity:
   • Guryaha dhumucda: Mid ka mid ah sifooyinka ugu muhiimsan ee ethers cellulose waa awoodda ay u leeyihiin inay dhumucdaan xalalka.Viscosity ee xalka waxaa saameeya arrimo ay ka mid yihiin heerka beddelka, miisaanka molecular, iyo xoojinta etherka cellulose.
3. Sameynta Filimka:
   • Kartida Samaynta Filimada: Qaar ka mid ah ethers cellulose, iyadoo ku xidhan nooca iyo darajadooda, waxay leeyihiin awooda ay ku sameeyaan filimada.Gurigan waxaa loo isticmaalaa codsiyada sida dahaarka, halkaas oo filim isku mid ah uu yahay mid la jecel yahay.
4. Heerka Beddelka (DS):
   • Beddelka Kiimikada: Heerka beddelka waxa loola jeedaa tirada celceliska ee hydroxyethyl ama kooxaha hydroxypropyl ee la beddelay unugga gulukooska ee silsiladda cellulose.Waxay saamaysaa milanka, viscosity, iyo sifooyinka kale ee ethers cellulose.
5. Miisaanka Molecular:
   • Saamaynta Viscosity: Miisaanka molecular ee ethers-ka cellulose wuxuu saameyn karaa maangalkooda iyo sifooyinka dhumucdooda.Miisaanka unugyadu sareeyo ethers cellulose waxa laga yaaba inay soo bandhigaan viscosity weyn ee xalka.
6. Gelation:
   • Guryaha Jeel- Samaynta: Iyada oo ku xidhan nooca iyo xaaladaha, ethers-ka cellulose waxa laga yaabaa inay soo bandhigaan sifooyinka gelation.Tani waxay muhiim u noqon kartaa codsiyada halka jel-u-ekaanta ay tahay mid la jecel yahay, sida qaababka daawooyinka qaarkood.
7. Waxqabadka Dusha sare:
   • Emulsification iyo Xasilinta: Qaar ka mid ah ether-yada cellulose waxay leeyihiin sifooyin firfircoon oo dusha sare ah, iyaga oo ka dhigaya emulsifiers iyo dejiyeyaal wax ku ool ah oo qaabaysan halkaasoo xasilloonida emulsion ay muhiim tahay.
8. Hygroscopicity:
   • Haysashada Biyaha: Ether-ka Cellulose waxaa lagu yaqaanaa dabeecadooda hygroscopic, taas oo u oggolaanaysa inay sii haystaan ​​biyaha.Hantidani waxay qiimo ku leedahay codsiyada sida qalabka dhismaha, halkaas oo haynta biyuhu ay lama huraan u tahay daawaynta saxda ah iyo shaqaynta.
9. Dareenka pH:
   • Waafaqsanaanta pH: Dareenka pH ee ethers cellulose waa tixgelin muhiim ah codsiyada kala duwan.Qaar ka mid ah ethers cellulose ayaa laga yaabaa inay muujiyaan kala duwanaansho guryaha ku salaysan pH ee xalka.
10. Adhesion:
    • Guryaha Xabagta: Codsiyada sida xabagta iyo dahaarka, ethers cellulose waxay gacan ka geystaan ​​adhession.Waxay kor u qaadi karaan xidhiidhka ka dhexeeya alaabta.
11. Tilmaamaha Rheological:
    • Saamaynta Habdhaqanka Socodka: Cellulose ethers waxay si weyn u saameeyaan hab-dhaqanka ereyoolajiyada ee qaab-dhismeedka, saamaynta saamaynta leh sida socodka, viscosity, iyo dhaqanka xiirid-xiirid.

Fahamka sifooyinkan physicochemical ayaa muhiim u ah doorashada eter-ka cellulose-ka saxda ah ee codsiyada gaarka ah.Soo-saareyaashu waxay bixiyaan tilmaamo faahfaahsan iyo xaashi xog farsamo oo qeexaya guryahan darajooyin kala duwan iyo noocyada ether-ka cellulose.