Thermal decomposition and carbonization mechanism of poly-para-phenyleneoxadiazole

✍ Scribed by M. Murakami; Y. Yumoto; S. Mizogami; H. Yasujima; S. Naitoh; S. Yoshimura

• Book ID: 105337516
• Publisher: John Wiley and Sons
• Year: 1990
• Tongue: English
• Weight: 501 KB
• Volume: 28
• Category: Article
• ISSN: 0887-624X
• DOI: 10.1002/pola.1990.080280615

✦ Synopsis

Abstract

Thermal decomposition and carbonization mechanism of poly‐para‐phenylene‐1,3,4‐oxadiazole were investigated using FT‐IR, thermogravimetry, gas‐analysis, XPS, ^13^C‐CP/MASFT‐NMR, and elemental analysis. At temperatures above 500°C, the decomposition reaction proceeds preferentially on the oxadiazole ring, eliminating p‐aminocyanobenzene and p‐dicyanobenzene. Formation of carbodiimide compounds and their coupling followed in residual compounds, whose products are important intermediates leading to a planar and polyconjugated nitrogen‐containing (e.g., graphite‐like) carbon precursor.