Qaab-dhismeedka iyo Qaab-dhismeedka Hydroxyethyl Cellulose

Hydroxyethyl cellulose(HEC) waa eter cellulose ah oo wax laga beddelay kaas oo ka yimid cellulose iyada oo loo marayo fal-celin kiimikaad oo soo bandhigta kooxaha hydroxyethyl qaabdhismeedka cellulose. Is-waafajinta iyo qaab-dhismeedka HEC waxaa saameeya heerka beddelka (DS), miisaanka kelli, iyo habaynta kooxaha hydroxyethyl ee silsiladda cellulose.

Qodobbada Muhiimka ah ee ku saabsan Hab-dhismeedka iyo Qaab-dhismeedka HEC:

1. Qaab dhismeedka Cellulose aasaasiga ah:
   • Cellulose waa polysaccharide toosan oo ka kooban unugyo gulukoos oo soo noqnoqda oo ku xiran β-1,4-glycosidic bonds. Waa polymer si dabiici ah u dhacda oo laga helo gidaarada unugyada dhirta.
2. Hordhaca Kooxaha Hydroxyethyl:
   • Isku dhafka HEC, kooxaha hydroxyethyl waxaa lagu soo bandhigay iyadoo lagu beddelayo kooxaha hydroxyl (-OH) ee qaab-dhismeedka cellulose ee kooxaha hydroxyethyl (-OCH2CH2OH).
3. Heerka Beddelka (DS):
   • Heerka beddelka (DS) waxay ka dhigan tahay celceliska tirada kooxaha hydroxyethyl unuggii anhydroglucose ee silsiladda cellulose. Waa halbeeg muhiim ah oo saameeya milanka biyaha, viscosity, iyo sifooyinka kale ee HEC. DS sare waxa ay tusinaysaa heer sare oo badalid ah.
4. Miisaanka Molecular:
   • Miisaanka kelli ee HEC wuu kala duwan yahay iyadoo ku xiran habka wax soo saarka iyo codsiga la doonayo. Heerarka kala duwan ee HEC waxay yeelan karaan miisaanyo unugyo kala duwan, taasoo saamaynaysa sifooyinkooda rheological.
5. Qaabka Xalka:
   • Xalka, HEC waxay soo bandhigaysaa isfaham la dheeraday. Soo bandhigida kooxaha hydroxyethyl waxay siisaa milanka biyaha polymer-ka, taas oo u oggolaanaysa inay sameeyaan xalal cad oo muuqda oo biyaha ah.
6. Biyo milmayn:
   • HEC waa biyo-milmi kara, kooxaha hydroxyethyl-kuna waxay gacan ka geystaan ​​kobcinta milanka marka la barbar dhigo cellulose-ka asalka ah. milankani waa hanti muhiim u ah codsiyada sida dahaarka, xabagta, iyo alaabta daryeelka shakhsi ahaaneed.
7. Isku-xidhka Hydrogen:
   • Joogitaanka kooxaha hydroxyethyl oo ay weheliyaan silsiladda cellulose waxay u oggolaaneysaa isdhexgalka isku-xirnaanta hydrogen, taasoo saameyn ku yeelanaysa qaabka guud iyo habdhaqanka HEC ee xalka.
8. Tilmaamaha Rheological:
   • Sifooyinka rheological ee HEC, sida viscosity iyo dhaqanka khafiifinta xiirid, waxaa saameeya labadaba miisaanka kelli iyo heerka beddelka. HEC waxay caan ku tahay sifooyinka dhumucdooda waxtarka leh ee codsiyada kala duwan.
9. Guryaha Samaynta Filimada:
   • Darajooyinka qaarkood ee HEC waxay leeyihiin sifooyin filim samaynta, oo gacan ka geysta isticmaalkooda dahaarka halkaas oo samaynta filim joogto ah oo isku mid ah ay tahay mid la jecel yahay.
10. Dareenka heerkulka:
    • Qaar ka mid ah darajooyinka HEC ayaa laga yaabaa inay muujiyaan dareenka heerkulka, iyadoo lagu marayo isbeddellada viscosity ama gelation iyadoo laga jawaabayo kala duwanaanshaha heerkulka.
11. Kala duwanaanshaha Codsiga-gaarka ah:
    • Soosaarayaal kala duwan ayaa laga yaabaa inay soo saaraan kala duwanaansho HEC ah oo leh guryo ku habboon si ay u buuxiyaan shuruudaha codsiga gaarka ah.

Marka la soo koobo, Hydroxyethyl Cellulose (HEC) waa eter cellulose biyo-milmi leh oo leh isfaham la fidiyay oo xal ah. Soo bandhigida kooxaha hydroxyethyl waxay kor u qaadaysaa milmaheeda biyaha waxayna saameyn ku yeelataa sifooyinka rheological iyo filim samaynta, taas oo ka dhigaysa polymer-ka badan ee codsiyada kala duwan ee warshadaha sida dahaarka, dhejiska, daryeelka shakhsi ahaaneed, iyo in ka badan. Is-waafajinta gaarka ah iyo qaab-dhismeedka HEC waa la hagaajin karaa iyadoo lagu salaynayo arrimo ay ka mid yihiin heerka beddelka iyo miisaanka kelliyada.