Abstract.
New experimental data for the pressure dependence of the viscosity of aqueous solutions of different sugars are presented. Measurements were carried out with a gravity driven high pressure viscometer with a maximum pressure of 700 MPa. The influence of both concentration and temperature on the pressure dependence of the viscosity is considered. Next to the data, a viscosity model based on a suspension model is introduced and it is shown that it is able to predict the viscosity for sugar solutions in a broad parameter range, including pressure. It is demonstrated that the relative viscosity for varying sugar mass fraction at constant pressure coincides with the pressure-dependent relative viscosity for a fixed sugar mass fraction, suggesting that there are no structural changes occurring under pressure. A brief interpretation of the viscosity model is given.
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Först, P., Werner, F. & Delgado, A. On the pressure dependence of the viscosity of aqueous sugar solutions. Rheol Acta 41, 369–374 (2002). https://doi.org/10.1007/s00397-002-0238-y
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DOI: https://doi.org/10.1007/s00397-002-0238-y