Answers are grounded in this paper and cite their sources.
High molecular weight poly‐N,N′‐(4,4′‐diphenylether)pyromellitimide film was prepared from pyromellitic dianhydride and 4,4′‐diaminodiphenylether and the oxidative degradation at 400°C was studied by weight loss measurements, infrared spectrometry and saponification experiments. The results indicated the rapid development of crosslinks between the polyimide chains.
No takes yet. Share an insight, caveat, or question.
Dine‐Hart et al. (1971) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: