Accession Number : AD0817347

Title :   INFRARED SPECTRA OF THERMALLY TREATED POLY-2, 2'(M-PHENYLENE)-5,5'-BIBENZIMIDAZOLE AND SEVERAL RELATED MODEL COMPOUNDS.

Descriptive Note : Summary technical rept. Dec 65-Jan 67,

Corporate Author : MONSANTO RESEARCH CORP DAYTON OH DAYTON LAB

Personal Author(s) : Feairheller, W. R., Jr. ; Katon, J. E.

Report Date : MAY 1967

Pagination or Media Count : 58

Abstract : The effect of thermal treatment on the polybenzimidazole polymer system has been studied with the major emphasis on the polymer poly-2,2'(m-phenylene)-5,5-bibenzimidazole and several model compounds, benzimidazole, 2-phenylbenzimidazole and 2,2-diphenyl-5,5-bibenzimidazole. Infrared spectroscopy was employed with supplemental data supplied by mass spectrometry and differential thermal analysis. A high temperature evacuable infrared cell was designed and built as part of the project. Two absorption bands were observed to vary with increased thermal treatment and these may find usefulness in determining the early stages of degradation. (Author)

Descriptors :   *POLYMERS), (*BENZIMIDAZOLES, (*INFRARED SPECTRA, POLYMERS), THERMAL STABILITY, DIFFERENTIAL THERMAL ANALYSIS, MASS SPECTROSCOPY, HEAT RESISTANT MATERIALS, MELTING POINT, DEGRADATION, SUBSTITUTION REACTIONS, CONDENSATION REACTIONS, AROMATIC COMPOUNDS, POTASSIUM COMPOUNDS, BROMIDES, INFRARED SPECTROSCOPY, HIGH TEMPERATURE, DECOMPOSITION, SYNTHESIS(CHEMISTRY), HETEROCYCLIC COMPOUNDS, THERMAL PROPERTIES.

Subject Categories : Polymer Chemistry

Distribution Statement : APPROVED FOR PUBLIC RELEASE