Diego B. Genovese, M.A. Rao
Apparent Viscosity and First Normal Stress of Starch Dispersions: Role of Continuous and Dispersed Phases, and Prediction with the Goddard-Miller Model
Appl. Rheol. 13:4 (2003) 183-190Abstract: Apparent viscosity, ha, and first normal stress coefficient, y1, of six different concentrations of cross-linked waxy maize (CWM), 3.5-5 % w/w, and tapioca, 2.8-4 % w/w, starch dispersions (SDs) showed power law relationships with shear rate, g·, and increased with starch concentration. In both ha and y1, volume fraction of the granules, f, played a more important role than the amylose content of the continuous phase. Slope of ha - g· curves increased mildly with starch concentration, while slope of y1 - g· curves was almost the same for CWM at all concentrations and 4 % tapioca SDs. Values of ha and y1 predicted from dynamic rheological and apparent viscosity data based on the Goddard-Miller model were in reasonable agreement with experimental values. © 2003 Applied Rheology.
-- full text PDF
available for subscribers --
-- open access PDF extractavailable for non-subscribers --
You have no password-free access to Applied Rheology Online. If you are a subscriber, enter login details below. For password-free access, we need your IP address. Sample manuscripts for free download can be found here ►
Forgotten your login details? Send an email with subject "AR login" to login@appliedrheology.org
Purchase this article for 20 € ? ►
Appl Rheol 13 (2003) issues:
© Applied Rheology 2018