Hydroxyethyl cellulose thiab cellulose cellulose

1. Cov ntsiab lus yooj yim

Hydroxyethyl cellulose (HEC): Hydroxyethyl cellulose (HEC) yog lub ntuj polymer compacter, feem ntau tau los ntawm etherification ntawm cellulose. Lub hydroxyethyl (-ch2ch2oh) pawg yog qhia rau nws cov molecule, muab nws kom zoo rau solubility, thickening, gelling thiab nto kev ua si. HEC tau dav siv hauv ntau daim teb xws li txheej ci, tshuaj pleev ib ce, tshuaj ntxuav, khoom noj thiab kev lag luam.

Cov Cellulose Etheny (EC): Ethyl Cellulose (EC) kuj yog Eteting Cellulose los ntawm ntuj cellulose. Tsis zoo li HEC, lub ethyl (-c2h5) pawg yog qhia rau hauv molecule ntawm EC hloov cov pab pawg hydroxyethyl. Nws tsis muaj neeg pluag solubility thiab feem ntau yog soluble hauv cov kuab tshuaj organic tab sis insoluble hauv dej. EC feem ntau yog siv hauv kev lag luam xws li cov tshuaj kiab duab, txheej thiab cov nplaum, thiab muaj cov nplaum, ua kom ruaj khov thiab ua yeeb yam thiab yeeb yaj kiab.

2. Qhov sib txawv ntawm cov qauv tshuaj lom thiab solubility

Tus qauv tshuaj:
Cov qauv molecular ntawm HEC yog tsim los ntawm kev hloov cellulose molecules los ntawm hydroxyethyl (CH2CH2OH) hloov pab pawg. Qhov kev hloov kho no ua rau HEC Hydrophilic thiab tuaj yeem ua tau zoo yaj hauv dej.
Nyob rau hauv lub ec molecule, kev tshwm sim pab pawg (C2h5) hloov qee pawg hydroxules hauv cellulose, uas ua rau nws cov molecules hydrothobic thiab soluble tsis zoo hauv cov kuab tshuaj organic.
Solubility:

HEC yog yooj yim soluble hauv dej, tshwj xeeb tshaj yog nyob rau hauv dej sov, thiab nws solubility yog hais txog molecular hnyav thiab qib ntawm hydroxyethettylation. Vim nws cov dej solubility, HEC feem ntau siv nyob rau hauv cov xwm txheej uas yuav tsum muaj, xws li txheej ci, thickeners, thiab lwm yam.
EC muaj cov tub rog tsis muaj zog hauv dej, tab sis muaj kev ua solubility zoo hauv cov kuab tshuaj yeeb yaj kiab xws li cov kuab tshuaj yeeb thiab cov kuab tshuaj uas ketone. Yog li ntawd, EC feem ntau siv hauv cov huab cua organic ib puag ncig ua ib qho tuab lossis zaj duab xis yav tas los.

3. Daim ntawv thov teb

Daim ntawv thov ntawm HEC:
Cov txheej txheem HEC yog siv los ua cov txheej txheem tuab thiab rheology thiab rheology kho rau cov dej pleev dej, uas tuaj yeem txhim kho cov dej ntshiab, kev tawm tsam cov txheej txheem los tiv thaiv nag.
Cov tshuaj pleev ib ce: Hauv kev lag luam tshuaj pleev ib ce, HEC feem ntau siv nyob rau hauv cov khoom lag luam xws li tshuaj pleev, tshuaj ntxuav, thiab tawv nqaij ua cov tuab tawv, thiab dej noo.
Tshuaj: HEC tseem siv rau hauv kev tswj cov tshuaj npaj raws li tuab thiab tus neeg sawv cev thiab tus neeg sawv cev qeeb los pab qeeb tshuaj.
Kev tsim kho: Hauv kev tsim kho kev tsim kho, HEC yog siv los ua cov tuab rau cov cement lossis tshuaj khib los txhim kho lub sijhawm ua haujlwm thiab txhim kho lub sijhawm qhib.

Daim ntawv thov EC:
Kws Tshuaj Kho Mob: Ethyl Cellulose feem ntau siv nyob rau hauv cov chaw muag tshuaj, tshwj xeeb hauv cov tshuaj nqa tshuaj, ua yeeb tshuaj yeeb tshuaj, zaj duab xis, thiab lwm yam.
Txheej Txheem Txheej Txheem thiab cov nplaum: Hauv kev lag luam txheej ntau, EC feem ntau siv los ua cov tuab thiab zaj duab xis yav tas los. Nws tuaj yeem nce cov tuab ntawm cov txheej thiab txhim kho huab cua tiv thaiv.
Khoom noj: EC tseem siv nyob rau hauv cov teb zaub mov, feem ntau yog cov tuab thiab stabilizer, thiab siv hauv cov zaub mov xws li jelly thiab khaub noom.
Cov tshuaj pleev ib ce: EC yog siv nyob rau hauv cov tshuaj pleev ib ce kom nce viscosity thiab ruaj khov ntawm emulsions, thiab kuj tseem siv tau los ua cov tshuaj kho cov tawv nqaij.

4. Kev sib piv

Thickening:
Hec thiab EC muaj cov teebmeem zoo rau cov teebmeem zoo, tab sis HEC qhia tau muaj zog rau cov dej huv, tshwj xeeb yog tsim nyog rau cov aqueous. EC qhia cov kev cuam tshuam zoo dua rau cov muaj feem cuam tshuam nrog cov organic daws vim nws hydrophobicity.

Solubility thiab ruaj khov:
HEC muaj cov dej ua kom zoo thiab siab txhawb zog ruaj khov, yog li nws tau siv dav hauv cov aqueous systems. EC muaj cov tub rog tsis zoo thiab yog siv ntau dua hauv cov txheej txheem organic lossis lub tshuab tsis muaj zog.

Rheology:
Rheological cov yam ntxwv ntawm HEC kev daws teeb meem sib txawv ntawm ntau qhov ntau, feem ntau yog ua rau cov cwj pwm tsis yog-tshiab hauv kua dej. EC feem ntau muaj cov rheology txuas ntxiv, tshwj xeeb tshaj yog hauv cov kuab tshuaj organic.

Hydroxyethyl cellulose (HEC) thiab Cellulose cellulose (EC) yog ob qho uas muaj tshuaj lom neeg thiab tshuaj lom neeg ntau yam. HEC YEC YEJ SOLUBILDAN THIAB THICKENING NTIAJ TEB ua kom nws dav siv nyob rau hauv cov tshuab dej-raws li cov tshuaj pleev, tshuaj pleev ib ce, thiab tshuaj. EC feem ntau siv hauv cov kuab tshuaj organic, xws li cov tshuaj siv tshuaj-cov tshuaj pleev, pleev xim, thiab lwm yam, vim nws cov khoom siv hydrophobicity. Qhov kev xaiv ntawm ob yuav tsum tau txiav txim siab raws li cov kev cai lij choj tshwj xeeb thiab cov kuab siv siv.