文献类型：期刊文献

英文题名：Thermal Behavior of Sweet Potato Starch by Non-Isothermal Thermogravimetric Analysis

作者：Liu, Ying Yang, Liutao Ma, Chunping Zhang, Yingzhe

第一作者：刘莹

通信作者：Yang, LT[1];Yang, LT[2]

机构：[1]Guizhou Inst Technol, Coll Chem Engn, Guiyang 550003, Guizhou, Peoples R China;[2]Guizhou Inst Technol, Key Lab Light Met Mat Proc Guizhou Prov, Guiyang 550003, Guizhou, Peoples R China;[3]Guizhou Inst Technol, Coll Mat & Met Engn, Guiyang 550003, Guizhou, Peoples R China

第一机构：贵州理工学院化学工程学院

通信机构：corresponding author), Guizhou Inst Technol, Key Lab Light Met Mat Proc Guizhou Prov, Guiyang 550003, Guizhou, Peoples R China;corresponding author), Guizhou Inst Technol, Coll Mat & Met Engn, Guiyang 550003, Guizhou, Peoples R China.|贵州理工学院材料与冶金工程学院;贵州理工学院;

年份：2019

卷号：12

期号：5

外文期刊名：MATERIALS

收录：;EI(收录号：20191206651126);Scopus(收录号：2-s2.0-85062986662);WOS:【SCI-EXPANDED(收录号:WOS:000462543700015)】；

基金：This work is financially supported by the project from the Science and Technology Department of Guizhou Province-Guizhou Institute of Technology Joint Fund [(2015)7101 and (2015)7089], Guizhou Institute of Technology (XJGC20140602), Guizhou Province Science and Technology Planning ([2016]1060), Education Department of Guizhou Province (KY[2016]085), and Training Program of Innovation and Entrepreneurship for Undergraduates of Guizhou Province (201414440008).

语种：英文

外文关键词：starch; kinetic analysis; thermal degradation; activation energy; mechanism

摘要：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 Satava-Sestak models were 173.85, 174.87, and 174.34 kJmol(-1), respectively. Thermogravimetry-Fourier transform infrared spectroscopy (TG-FTIR) analysis showed that the main pyrolysis products included water, carbon dioxide, and methane.