Viscoelastic characterization of corn starch paste: (II) The first normal stress difference of a cross-linked waxy corn starch paste
Year: 2025
Type: article
Abstract: The power-law strain model used to characterize the first normal stress difference (N 1) was checked here second based on the experimental linear viscoelastic properties, steady shear viscosities, and N 1s of two cross-linked waxy corn starch pastes reported in 2003. Parameter f in a structured integral viscoelastic constitutive equation was obtained using the viscosities in the dynamic and steady shear experiments, and both the original and power-law strain models were employed to describe the normal component in the strain matrix of the equation and the N 1s of the two pastes. The results showed that the three types of viscoelastic properties of the paste can be described well by the structured equation including the power-law strain model. In contrast, the descriptions of N 1s based on the original strain model have huge deviation from the experiments for both pastes, which are similar to the first characterization of N 1 of corn starch paste with sucrose in 2022.
Source: Applied Rheology
Author: Shuxin Huang
Language: English
Subfield: Fluid Flow and Transfer Processes
Field: Chemical Engineering
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $1,187
OpenAlex ID: W4411236387