The pyrolysis behaviors of polyimide foam derived from 3,3′,4,4′-benzophenone tetracarboxylic dianhydride/4,4′-oxydianiline

• Published in: Journal of applied polymer science 2010-02, Vol.115 (3), p.1680-1687
• Main Authors: Shen, Yan-Xia, Zhan, Mao-Sheng, Wang, Kai, Li, Xiao-Huan, Pan, Pi-Chang
• Format: Article
• Language: English
• Subjects: Applied sciences; Carbon dioxide; Carbon monoxide; Cellular; Decomposition; decomposition kinetics; Dianhydrides; Exact sciences and technology; Foams; Forms of application and semi-finished materials; Infrared spectroscopy; polyimide foam; Polyimide resins; Polymer industry, paints, wood; Pyrolysis; pyrolysis behavior; Technology of polymers; TG-FTIR
• ISSN: 0021-8995; 1097-4628; 1097-4628
• DOI: 10.1002/app.31189

The thermal stability and pyrolysis behaviors of polyimide (PI) foam derived from 3,3′,4,4′‐benzophenone tetracarboxylic dianhydride (BTDA)/4,4′‐oxydianiline (4,4′‐ODA) in air and in nitrogen were studied. The decomposition products of PI foam were analyzed by thermogravimetry‐Fourier transform infrared spectroscopy (TG‐FTIR). Several integral and differential methods reported in the literatures were used in decomposition kinetics analysis of PI foam. The results indicated that the PI foam was easier to decompose in air than in nitrogen, with ∼ 55% residue remaining in nitrogen versus zero in air at 800oC. The main pyrolysis products were CO2, CO, and H2O in air and CO2, CO, H2O, and small organic molecules in nitrogen. The different dynamic methods gave similar results that the apparent activation energies, pre‐exponential factors, and reaction orders were higher in nitrogen than those in air. © 2009 Wiley Periodicals, Inc. J Appl Polym Sci, 2010