文献类型：会议论文

英文题名：Thermal analysis and kinetic study of native silks

作者：Liu, Ying Yang, Liutao Ma, Chunping

第一作者：刘莹

通信作者：Yang, LT[1];Yang, LT[2]

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

第一机构：贵州理工学院材料与冶金工程学院

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

会议论文集：2nd Journal of Thermal Analysis and Calorimetry Conference (JTACC) / 7th Joint Czech-Hungarian-Polish-Slovakian Thermoanalytical Conference (V4)

会议日期：JUN 18-21, 2019

会议地点：Budapest, HUNGARY

语种：英文

外文关键词：Native silks; Kinetic analysis; Thermal decomposition; Activation energy; TG-FTIR

年份：2020

摘要：In this study, X-ray diffraction (XRD), thermogravimetric (TG) analysis and differential scanning calorimetry (DSC) method were used to analyze the main characteristics of native silks, and to analyze the thermal degradation process of this native silks. Three methods were used: XRD to study its structure, TG to study the thermal degradation process and DSC to study the curve of native silks. The thermal decomposition kinetics of native silks was examined within the heating rates of 5-20 degrees C min(-1) in nitrogen atmosphere. Different models of kinetic analysis were used to calculate the activation energies using thermogravimetric data of the thermal degradation process. The activation energies got from Kissinger, Flynn-Wall-Ozawa and Satava-Sestak models were 217.49, 216.09 and 193.61 kJ mol(-1), respectively. The values of activation energy indicated that the thermal degradation of native silks was a single reaction mechanism or the combination of multi-reaction mechanisms. TG-FTIR analysis showed that the main pyrolysis products included water, methane, carbon dioxide, ammonia, and so on.