XPS STUDY ON THE THERMAL DEGRADATION OF POLY-N,N prime /4,4 prime -DIPHENYLETHER/PYROMELLITIMIDE.

A. Tóth, I. Bertóti, T. Szekely, J. N. Sazanov, T. A. Antonova, A. V. Shchukarev, A. V. Gribanov

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Abstract

Thin foil samples of the title polymer preheated in vacuo up to different temperatures with the highest one reaching 1200 K were analysed by XPS. On heat treatment the surface content of oxygen decreased and that of carbon increased monotonously, while that of nitrogen passed over a local maximum at c. 800 K. Ether-type oxygens proved to be more heat resistant than carbonyl type ones. From the change of the N 1s peak the probable mechanism of decomposition up to c. 800 K was inferred to be a decarboxylation to give -CH equals N-type structures. At higher temperatures decarbonylation of the imide groups appeared to become predominant, resulting in the formation of amide functionalities. The development of a conductive (polyaromatic) structure was deduced from the gradual decrease in the charge shift with the increase of the temperature of pretreatment.

Original languageEnglish
Pages (from-to)261-266
Number of pages6
JournalSurface and Interface Analysis
Volume8
Issue number6
Publication statusPublished - Dec 1986

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ASJC Scopus subject areas

  • Colloid and Surface Chemistry
  • Physical and Theoretical Chemistry

Cite this

Tóth, A., Bertóti, I., Szekely, T., Sazanov, J. N., Antonova, T. A., Shchukarev, A. V., & Gribanov, A. V. (1986). XPS STUDY ON THE THERMAL DEGRADATION OF POLY-N,N prime /4,4 prime -DIPHENYLETHER/PYROMELLITIMIDE. Surface and Interface Analysis, 8(6), 261-266.