Dear Sateesh kumar Gupta, different models are available, it is to find the one in which you experimental resiluts fit. There are many variables and conditions. Here are some references. My Regards
As already pointed out, there are several models that could or could not be suitable depending on your specific experimental conditions. Here some additional useful resources to the ones already shared by Dr. Bouaziz:
Behra et al., Characterization of Sodium Carboxymethyl Cellulose Aqueous Solutions to Support Complex Product Formulation: A Rheology and Light Scattering Study, ACS Appl. Polym. Mater. 2019, 1, 3, 344–358
Edali et al., Rheological properties of high concentrations of carboxymethyl cellulose solutions, J. Appl. Polym. Sci. 2001, 79, 10, 1787-1801
Chalah et al., Rheological study of sodium carboxymethylcellulose: Effect of concentration and molecular weight, Mater. Today: Proc. 2022, 53, 1, 185-190