Influence of Temperature and Shear Rate on Rheological Properties of CTAC/NaSal Aqueous Solution

Author(s): Mingjun Pang* , Chengcheng Xie .

Journal Name: Recent Innovations in Chemical Engineering

Volume 12 , Issue 4 , 2019

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Abstract:

Background: It is very important for understanding the turbulence drag-reducing mechanism and for improving product quality in the fields of pharmaceutical and chemical engineering to deeply investigate the rheological properties of surfactants solutions.

Methods: The rheological properties of Cationic surfactant (Cetyltrimethyl Ammonium Chloride)/Sodium salicylate were measured and analyzed with the MCR302 rheometer.

Result: The present results show that the shear viscosity of CTAC/NaSal solution with the exception of 0.9375mmol·L-1 can show the Newtonian characteristic, the shear-thickening, the shear-thinning and the stable shear properties with changing shear time. The induction time increases with a shear rate as a power law function relation tind=aγb.

Conclusion: The shear viscosity of the CTAC/NaSal solution can be divided into three regions with shear rate, and its flow curve conforms to a linear function in the logarithmic coordinate. When the concentration and the shear rate are relatively high, the viscosity curve of the CTAC/NaSal solution appears "platform" at the high temperature. When the shear rate is greater than 90s-1, the shear viscosity only appears shear thinning with increasing temperature.

Keywords: Surfactant, rheological properties, shear rate, temperature, shear viscosity, cationic surfactant.

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Article Details

VOLUME: 12
ISSUE: 4
Year: 2019
Page: [296 - 311]
Pages: 16
DOI: 10.2174/2405520412666190731110603
Price: $95

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