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Updated: Jan 28, 2026

Analysis and Specification of Starch Granule Size Distributions
Published on: March 4, 2021
Thermal Behavior of Sweet Potato Starch by Non-Isothermal Thermogravimetric Analysis
Ying Liu1, Liutao Yang2,3, Chunping Ma4,5
1College of Chemical Engineering, Guizhou Institute of Technology, Guiyang, Guizhou 550003, China. liuychemistry@163.com.
Abstract:
In this study, X-ray diffraction (XRD), thermogravimetric analysis (TGA), and differential scanning calorimetry (DSC) methods were used to study the structure, the thermal degradation kinetics, and the thermogram of sweet potato starch, respectively. The thermal decomposition kinetics of sweet potato starch was examined within different heating rates in a nitrogen atmosphere. Different models of kinetic analysis were used to calculate the activation energies using the thermogravimetric data of the thermal degradation process. The activation energies got from Kissinger, Flynn⁻Wall⁻Ozawa, and Šatava⁻Šesták models were 173.85, 174.87, and 174.34 kJ·mol-1, respectively. Thermogravimetry⁻Fourier transform infrared spectroscopy (TG-FTIR) analysis showed that the main pyrolysis products included water, carbon dioxide, and methane.
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