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Graphitization studies of cured phenolic resins by high-resolution 13C-cross-polarization magic angle spinning solid-state NMR spectroscopy

Authors

  • B. Amram,

    1. Commissariat à l'Energie Atomique, Centre d'Etudes de Vaujours, Service MX, Laboratoire de Résonance Magnétique Nuclèaire, B. P. n° 7, 77181 Country, France
    Current affiliation:
    1. Laboratoire de Physico-Chimie Structurale et Macromoléculaire, ESPCI, 10, rue Vauquelin, 75231 Paris Cedex 05, France
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  • F. Laval

    1. Commissariat à l'Energie Atomique, Centre d'Etudes de Vaujours, Service MX, Laboratoire de Résonance Magnétique Nuclèaire, B. P. n° 7, 77181 Country, France
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Abstract

13C-cross-polarization/magic angle spinning solid-state NMR spectroscopy is used to investigate the graphitization process of a pyrolyzed formophenolic resin. The formation of a 2-dimensional graphitelike lattice, growing with the duration of the laser pyrolysis, is shown. A one-parameter-condensation model is used to estimate, from our dipolar-dephasing NMR experimental data, the quaternary-to-tertiary aromatic fraction, the number of condensed aromatic rings (from 10 to 23 units), and the average cluster diameter (from 9 to 14 Å).

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