文献类型：期刊文献

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, Liutao

机构：[1] College of Materials and Metallurgical Engineering, Guizhou Institute of Technology, Guiyang, Guizhou, 550003, China; [2] College of Chemical Engineering, Guizhou Institute of Technology, Guiyang, Guizhou, 550003, China; [3] Key Laboratory of Light Metal Materials Processing of Guizhou Province, Guizhou Institute of Technology, Guiyang, Guizhou, 550003, China

第一机构：贵州理工学院材料与冶金工程学院

年份：2020

卷号：139

期号：1

起止页码：589-595

外文期刊名：Journal of Thermal Analysis and Calorimetry

收录：EI(收录号：20192407043925);Scopus(收录号：2-s2.0-85067044985)

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：Activation analysis - Ammonia - Carbon dioxide - Decomposition - Differential scanning calorimetry - Kinetics - Photodegradation - Pyrolysis - Silk - Thermoanalysis - Thermogravimetric analysis - Thermolysis - X ray diffraction

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?°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 ?atava–?esták 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. ? 2019, Akadémiai Kiadó, Budapest, Hungary.