• 文献标题:   Analysis of Thermal Decomposition Kinetics and Calculation of Activation Energy for Degradation of Polyaniline-Graphene Oxide Composites-Synergistic Reinforcement on Thermal Stability
  • 文献类型:   Article
  • 作  者:   GUL H, SHAH AUA, GUL S, BILAL S
  • 作者关键词:   polyanilinegraphene oxide composite, activation energy of degradation, horwitz metzger method, coats redfern method
  • 出版物名称:   IRANIAN JOURNAL OF CHEMISTRY CHEMICAL ENGINEERINGINTERNATIONAL ENGLISH EDITION
  • ISSN:   1021-9986
  • 通讯作者地址:  
  • 被引频次:   2
  • DOI:   10.30492/ijcce.2021.129056.4180
  • 出版年:   2022

▎ 摘  要

Thermo Gravimetric Analysis (TGA) is one of the most commonly used techniques to study the thermal stability of materials. Thermograms not only give an instant view of thermal stability but can also give insights into the degradation kinetics of the material. This study reports on the degradation kinetics of composite materials based on polyaniline and graphene oxide (PANI-GO) synthesized with varying amounts of GO. Horwitz & Metzger, Coats & Redfern, and Chan et al., methods were employed for the calculation of activation energy for degradation, using TGA data. It was observed that their thermal stability and activation energy of degradation are affected by changing the amount of GO during polymerization, indicating PANI and GO synergistically enhance the thermal stability of PANI- GO composites. The highest activation energy value of 29.87 kJ/mol was shown by a composite that contains 6 percent GO. UltraViolet-Visible (UV-Vis) spectroscopy, X- Ray Diffraction (XRD) Analysis also support variations in different properties of the composites as a result of changing GO concentration.