Analysis of flowability, thixotropy and dynamic viscoelastic of Gum Arabic solution

The flowability, thixotropy and dynamic viscoelasticity were investigated for different concentrations of gum arabic (GA) under the condition of 25℃.The results showed that gum arabic solution was pseudoplastic fluid, the greater concentration, the better correlation to the the rheology of power-law model.Thixotropy weakened with increasing concentrations of GA solutions.The storage modulus (G') and loss modulus (G″) had no intersection point (G' > G″) at the concentrations of 0.05g/mL and 0.10g/mL, which performed the solid-like viscoelastic behavior, G' and G″ of GA solutions had a intersection point at the concentrations of 0.20g/mL and 0.30g/mL, which indicated a phase transformation.