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E. Stelmasiak, A. Włochowicz

IR-estimation of aromaticity of coal and petroleum pitches

Polimery 1989, No 4, 155

DOI: dx.doi.org/10.14314/polimery.1989.155


An estimation of the content of carbon atoms in aromatic structures in the carbon and petroleum pitches, based on a quantitative analysis of IR-absorption spectra, has been presented. These pitches are used in the manufacture of precursor fibres. As models, aromatic standards with condensed ring systems, phenanthrene, chrysene, pyrene and picene, have been used. The results of the estimation of aromaticity of pitches by elementary analysis and by IR-spectroscopy have been compared. The values of aromaticity from IR-analysis are lower than those from elementary analysis.

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