Premium
RHEOLOGICAL BEHAVIOUR OF THREE BIOPOLYMER/WATER SYSTEMS, WITH EMPHASIS ON YIELD STRESS AND VISCOELASTIC PROPERTIES
Author(s) -
GIBOREAU AGNES,
CUVELIER GÉRARD,
LAUNAY BERNARD
Publication year - 1994
Publication title -
journal of texture studies
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.593
H-Index - 54
eISSN - 1745-4603
pISSN - 0022-4901
DOI - 10.1111/j.1745-4603.1994.tb01321.x
Subject(s) - viscoelasticity , rheology , materials science , biopolymer , viscoplasticity , xanthan gum , starch , yield (engineering) , creep , stress relaxation , shear stress , composite material , shear rate , constitutive equation , polymer , chemistry , food science , structural engineering , engineering , finite element method
Flow and viscoelastic properties of three thickened systems are presented: aqueous solutions of locust bean gum, of xanthan and a dispersion of a crosslinked waxy corn starch. Creep measurements allow investigations at very low shear rates. The existence of a yield stress is discussed. Flow was observed at low shear rates, but the starch paste exhibited pseudo‐yield stress behaviour. Dynamic measurements were performed and the relationships between flow curves and mechanical spectra are discussed.