Premium
Analysis of volatiles evolved during high‐temperature treatment of thermally stable polymers. I. Nitrogen‐containing acetylene‐terminated resin
Author(s) -
Mera Ann E.,
Walton Theodore R.
Publication year - 1993
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1993.070470514
Subject(s) - thermogravimetric analysis , toluene , acetylene , boiling , aniline , benzonitrile , nitrogen , benzene , xylene , evolved gas analysis , chemistry , methane , polymer , ammonia , mass spectrometry , analytical chemistry (journal) , organic chemistry , thermal analysis , chromatography , thermal , physics , meteorology
Cured samples of a nitrogen‐containing acetylene‐terminated resin, N,N ′‐(1,3‐phenylene‐dimethylidene)bis(3‐ethynylaniline), have been heated at 10°C/min up to 900°C in a pyroprobe attached to a gas chromatograph/mass spectrometer (GC/MS). Analysis of the volatiles evolved during heating identified both gases and higher boiling compounds. The major higher boiling compounds are benzene, toluene, xylene, aniline, benzonitrile, m ‐methylaniline, and m ‐methylbenzonitrile; the gases include ammonia, methane, and traces of carbon dioxide. Correlations between sample temperature and the evolution of each of these compounds have been made. The onset of all volatile formation occurs between 450 and 500°C. The higher boiling volatiles peak, then end by approximately 700°C, while the gases peak then fall off but are still being evolved at 900°C. Average weight loss measurements of 13.6% at 700°C and 15.7% at 900°C agree with previously published thermogravimetric analysis (TGA) data. © 1993 John Wiley & Sons, Inc.