Cov qauv tshuaj ntawm cellulose ether derivatives

Cellulose Cov neeg muaj kev hais txog ntawm cellulose, lub ntuj polysaccharide pom nyob hauv cov phab ntsa ntawm tes ntawm cov nroj tsuag. Cov qauv tshuaj ntawm cov qauv ntawm cellulose yog tus cwj pwm los ntawm kev qhia ntawm ntau pawg ether cov pab pawg los ntawm cov pawg siv tshuaj lom neeg hauv qab. Cov feem ntau hom ntawm cov neeg muaj kev pab cuam cellulose muaj xws li:

1. HydroxyPropyyl methylcellulose (HPMC):
   • Tus qauv:
     • HPMC yog synthesized los ntawm hloov cov pab pawg hydroxyl ntawm cellulose nrog ob qho tib si hydroxypropyl (-och2chohch3) thiab methyl (-och3) pawg.
     • Cov degree ntawm kev hloov pauv (DS) qhia txog qhov nruab nrab ntawm cov pab pawg hydroxyl ib lub hauv qab ntawm cov cellulose hauv chav cellulose.
2. Carboxymethyl cellulose(Cmc):
   • Tus qauv:
     • CMC yog tsim los ntawm kev qhia cov carboxymethyl (-ch2Cooh) pawg rau cov pawg hydroxyl ntawm cellulose.
     • Cov pob roj carboxymethyl uas cuam tshuam dej solubility thiab anionic cim rau lub cellulose saw.
3. Hydroxyethyl cellulose (HEC):
   • Tus qauv:
     • HEC tau muab los ntawm hloov cov pab pawg hydroxyl ntawm cov pawg ntawm cellulose nrog hydroxyethyl (-och2ch2oh) pawg.
     • Nws ua kom zoo dua cov dej solubility thiab thickening cov khoom.
4. Methyl Cellulose (MC):
   • Tus qauv:
     • MC yog tsim tawm los ntawm kev qhia methyl (-och3) pawg rau cov pawg hydroxyl ntawm cellulose.
     • Nws yog feem ntau siv rau nws cov dej khaws cia thiab ua yeeb yaj kiab ua yeeb yam.
5. Ethyl Cellulose (EC):
   • Tus qauv:
     • EC yog synthesized los ntawm hloov cov pab pawg hydroxyl ntawm cellulose nrog ethyl (-oc2h5) pawg.
     • Nws yog lub npe hu rau nws insolubility hauv dej thiab feem ntau yog siv nyob rau hauv kev tsim cov txheej txheej thiab cov yeeb yaj kiab.
6. HydroxyPropyl cellulose (HPC):
   • Tus qauv:
     • HPC yog muab tau los ntawm kev qhia txog hydroxypropyl (-och2chohch3) pawg rau cov pawg hydroxyl ntawm cellulose.
     • Nws yog siv los ua cov binder, zaj duab xis yav tas los, thiab viscosity concifi.

Tus qauv tshwj xeeb sib txawv rau txhua lub cellulose ether derivative raws li hom thiab qib hloov thaum lub sijhawm ua haujlwm siv tshuaj lom neeg. Cov kev qhia ntawm cov pab pawg ethers uas cuam tshuam tshwj xeeb cov khoom rau txhua lub cellulose ether, ua rau lawv haum rau ntau cov ntawv thov.