Kev cuam tshuam cov ntsiab lus ntawm carboxymethylcellulose sodium ntsev tov Cwj pwm
Carboxymethylcellulose sodium ntsev (CMC-Na) yog cov dej-soluble polymer uas feem ntau siv rau ntau yam kev lag luam thiab kev lag luam, suav nrog zaub mov, tshuaj, thiab cov khoom tu tus kheej. Tus cwj pwm ntawm CMC-Na cov kev daws teeb meem yog cuam tshuam los ntawm ntau yam, qee qhov tau tham hauv qab no:
- Molecular Luj: Qhov hnyav molecular ntawm CMC-Na cuam tshuam nws cov kev daws teeb meem, viscosity, thiab rheological zog. Qhov hnyav dua molecular CMC-Na polymers feem ntau muaj cov tshuaj viscosities ntau dua thiab nthuav tawm tus cwj pwm shear-thinning ntau dua li qhov hnyav dua molecular counterparts.
- Concentration: Qhov concentration ntawm CMC-Na hauv kev daws kuj cuam tshuam rau nws tus cwj pwm. Ntawm qhov tsis tshua muaj siab, CMC-Na cov kev daws teeb meem coj zoo li Newtonian kua, thaum nyob rau hauv siab dua, lawv ua viscoelastic dua.
- Ionic zog: Lub zog ionic ntawm cov tshuaj tuaj yeem cuam tshuam rau tus cwj pwm ntawm CMC-Na cov kev daws teeb meem. Cov ntsev ntau dua tuaj yeem ua rau CMC-Na sib sau ua ke, ua rau kom muaj viscosity thiab txo cov solubility.
- pH: Lub pH ntawm kev daws kuj tuaj yeem cuam tshuam tus cwj pwm ntawm CMC-Na. Ntawm qhov pH qis, CMC-Na yuav dhau los ua protonated, ua rau txo solubility thiab nce viscosity.
- Kub: Qhov kub ntawm cov tshuaj tuaj yeem cuam tshuam tus cwj pwm ntawm CMC-Na los ntawm kev hloov nws cov solubility, viscosity, thiab gelation cwj pwm. Kev kub siab dua tuaj yeem ua rau kom muaj kev sib haum xeeb ntawm CMC-Na, thaum qhov kub qis tuaj yeem ua rau gelation.
- Shear npaum li cas: Tus nqi shear lossis tus nqi ntws ntawm cov tshuaj tuaj yeem cuam tshuam tus cwj pwm ntawm CMC-Na los ntawm kev hloov nws cov viscosity thiab rheological zog. Ntawm cov nqi shear ntau dua, CMC-Na cov kev daws teeb meem ua kom qis dua thiab ntau dua shear-thinning.
Zuag qhia tag nrho, tus cwj pwm ntawm CMC-Na cov kev daws teeb meem yog cuam tshuam los ntawm ntau yam, suav nrog qhov hnyav molecular, concentration, ionic zog, pH, kub, thiab shear npaum li cas. Kev nkag siab txog cov xwm txheej no yog qhov tseem ceeb hauv kev tsim thiab ua kom zoo tshaj CMC-Na-raws li formulations rau ntau daim ntawv thov.
Post lub sij hawm: Mar-19-2023