Constitutive modeling of β-glucan/amylodextrin blends

Accurate constitutive equations are required for the understanding of many food processes. The purpose of this work was to test the ability of constitutive equations to model the rheological behavior of β-glucan/amylodextrin blends in a range of flows. The predictions of the K-BKZ, Giesekus, Phan-Th...

Full description

Saved in:
Bibliographic Details
Published in:Carbohydrate polymers 2003-05, Vol.52 (3), p.243-252
Main Authors: Byars, Jeffrey A., Carriere, Craig J., Inglett, George E.
Format: Article
Language:English
Subjects:
Applied sciences
Constitutive modeling
Exact sciences and technology
Natural polymers
Physicochemistry of polymers
Rheology
Starch and polysaccharides
β-Glucan/amylodextrin blends
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Accurate constitutive equations are required for the understanding of many food processes. The purpose of this work was to test the ability of constitutive equations to model the rheological behavior of β-glucan/amylodextrin blends in a range of flows. The predictions of the K-BKZ, Giesekus, Phan-Thien–Tanner and Bird–Carreau models were compared to experimental results in steady shear, startup of steady shear, stress relaxation and biaxial extension flows. The K-BKZ model yielded the most accurate predictions across the range of flows. The Giesekus and Phan-Thien–Tanner models gave good results in shear flows, but failed to predict the correct strain dependence in stress relaxation. The Bird–Carreau model did not capture many features of the flow behavior. The results indicate the need to test thoroughly constitutive equations before using them to model food processes.
ISSN:0144-8617
1879-1344
DOI:10.1016/S0144-8617(02)00272-2