Effects of Concentration and Temperature on Rheological Properties of Mixture of HPMC and CMC Solutions

Abstract:

This work was designed to study the rheologicl properties of mixture of HPMC and CMC solutions because their rheologicl properties are very important in no matter food or pharmaceutical industry processing operations. Experiments were performed at different mixture ratios, shear rates and temperatures. The static and dynamic rheological properties tests were measured through the rheometer AR-550 and were investigated by using Power Law equation, Cross equation and Arrhenius equation. The results showed that the HPMC-CMC solutions behaved as typical Non-Newtonian shear-thinning fluids and had stronger non-Newtonian nature. With the concentration_(CMC) increasing, consistency coefficient K, Zero Shearing Viscosity η_0, viscous flow activation energy E, storage modulus G and loss modulus G all increased but decreased with the temperature increasing, except for Non-Newtonian index n. And viscosity was the dominant property in the mixture of HPMC-CMC solutions.

• Periodical: Advanced Materials Research (Volume 787)
• Pages: 792-797
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.787.792
• Online since: September 2013
• Authors: Qing Yong Li, Jun Ye, Jian Xiong
• Keywords: Carboxymethyl Cellulose, Hydroxypropyl Methylcellulose, Non-Newtonian Index n, Shear Rate

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