Study on Pyrolysis Behavior of Bio-based adenine containing phthalonitrile resin obtained by powder metallurgy-like process

The pyrolysis behaviors of bio-based adenine containing phthalonitrile resin (ADCN) processed by powder metallurgy-like process are studied through the thermogravimetric analysis (TGA), thermogravimetry coupled with Fourier Transform Infrared Spectroscopy and Mass Spectrometry (TG-FTIR-MS), X-Ray photoelectron spectroscopy (XPS) and Raman spectra. The results indicate the pyrolysis process of ADCN resin can be dived into four stages. In the first stage (400-500 degrees C), The weight loss of the sample is small which may be caused by the volatilization of some oligomers. The second and third stages (500-820 degrees C) correspond to the major degradation process, where the release of small molecular compounds including HCN, NH3, CH4, CO2, CO, H2O, benzene and its derivatives. In addition, the release amount of HCN is more than other phthalonitrile (PN) systems. In the fourth stage (600-10 00 degrees C), with the increase of temperature, the degree of disorder in carbon material increase, and the forms of nitrogen transform from pyrrolic nitrogen (N-5) and pyridinic nitrogen (N-6) to quaternary nitrogen (N-Q), which is benefit for the application of carbon materials in the electrical field. (C) 2021 Elsevier Ltd. All rights reserved.

Automated summary

The pyrolysis behaviors of bio-based adenine containing phthalonitrile resin (ADCN) processed by powder metallurgy-like process were studied through various analytical techniques. The pyrolysis process was divided into four stages, with the release of various small molecular compounds including a higher amount of HCN compared to other systems. As temperature increased, the structure of carbon material changed gradually, which could benefit its application in the electrical field.