Premium
Thermal stability of model compounds related to thermostable polymers by pyrolysis‐gas chromatography
Author(s) -
Hirsch Stephen S.,
Lilyquist M. R.
Publication year - 1967
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.1967.070110211
Subject(s) - pyrolysis , thermal stability , polymer , gas chromatography , materials science , amide , thermal , thermal resistance , heat resistance , organic chemistry , chemistry , polymer chemistry , chemical engineering , chromatography , composite material , thermodynamics , physics , engineering
Thermal stabilities of eighteen model compounds related structurally to thermostable polymer systems were determined accurately by pyrolysis‐gas chromatography. This approach offers distinct advantages over previously used indirect methods which measure parameters other than actual starting material remaining undecomposed. Both the oxadiazole ring and the aromatic amide link were found to have poor thermal stabilities in comparison with other compounds studied. Since polymers based on these two features have been shown to be valuable for use in air at 200–400°C., the data suggest that oxidation resistance rather than the ultimate in pure thermal resistance should be sought in all‐purpose thermostable materials.