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Gas chromatography of styrene oligomers using a curie-point pyrolyzer

Authors
Journal
Journal of Analytical and Applied Pyrolysis
0165-2370
Publisher
Elsevier
Publication Date
Volume
33
Identifiers
DOI: 10.1016/0165-2370(94)00878-5
Keywords
  • 2
  • 4-Diphenylpentane
  • Preparative Scale Liquid Chromatography
  • Pyrolysis
  • Pyrolysis-Gas Chromatography/Mass Spectrometry
  • Styrene Oligomers

Abstract

Abstract A Curie-point pyrolyzer directly coupled to a capillary gas Chromatograph was applied to analyze the volume effects of stereoisomers on the chromatography of 2,4-diphenylpentane as a model compound of a styrene dimer, and finally of those of styrene oligomers. It was found that the retention time for the meso-isomer of 2,4-diphenylpentane appeared to be advanced and significantly far apart from that of the racemo-isomer. In the case of styrene oligomers prepared with n-butyllithium as the initiator, the n-butyl group coupled to the β-carbon atom to the styrene terminal unit was stable even at 590 °C, and corresponding peaks for the 1-mer, 2-mer, 3-mer and 4-mer were detected, in addition to the well-recognized peaks assigned to the dimer and the trimer.

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