文献类型：期刊文献

英文题名：Thermal degradation and kinetics of spider silk by non-isothermal procedures

作者：Yang, Liutao Liu, Ying

第一作者：Yang, Liutao

通信作者：Yang, LT[1]

机构：[1]Guizhou Police Coll, Dept Theoret Educ & Training, Guiyang 550005, Guizhou, Peoples R China;[2]Guizhou Inst Technol, Coll Chem Engn, Guiyang 550003, Guizhou, Peoples R China

第一机构：Guizhou Police Coll, Dept Theoret Educ & Training, Guiyang 550005, Guizhou, Peoples R China

通信机构：corresponding author), Guizhou Police Coll, Dept Theoret Educ & Training, Guiyang 550005, Guizhou, Peoples R China.

年份：2025

外文期刊名：JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY

收录：;EI(收录号：20251518199384);Scopus(收录号：2-s2.0-105002073167);WOS:【SCI-EXPANDED(收录号:WOS:001461174000001)】；

基金：The authors wish to acknowledge the financial support to the National Natural Science Foundation of China (No.52160010), Guizhou Police College High level Talent Launch Project (No.240221), and the Science and Technology Plan Project of Guizhou Province (QiankeheJichu ZK [2023] yiban 132).

语种：英文

外文关键词：Spider silk; Kinetic analysis; XRD; DSC; Activation energy

摘要：Spider silk is an important material in nature, and the relevance of studying the thermal degradation is multifaceted and significant, particularly in the context of materials science and biotechnology. The researchers utilized techniques such as X-ray diffraction, thermogravimetric analysis (TGA), and differential scanning calorimetry (DSC) to investigate the main characteristics of spider silk and to assess its process of thermal degradation. The thermal stability tests were conducted on the silk at temperatures increasing from 5 to 20 degrees C min-1 in N2. Data obtained from thermogravimetric analysis were crucial for determining the decomposition activation energy of silk via different kinetic analytical techniques. By applying the theoretical models of Flynn-Wall-Ozawa and Kissinger-Akahira-Sunose, the researchers found the activation energies to be 126.25 kJ mol-1 and 140.07 kJ mol-1, respectively. The DSC analysis indicated two distinct stages of thermal degradation: an initial stage at lower temperatures, associated with the decomposition of long molecular chains, and a subsequent stage at higher temperatures, linked to the cleavage of glucose rings. Furthermore, TG-FTIR spectroscopic analysis revealed that the main products of decomposition included water, methane, carbon dioxide, and ammonia, among various other compounds.