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Graphitization studies of cured phenolic resins by high‐resolution 13 C‐cross‐polarization magic angle spinning solid‐state NMR spectroscopy
Author(s) -
Amram B.,
Laval F.
Publication year - 1989
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1989.070370101
Subject(s) - magic angle spinning , pyrolysis , materials science , spectroscopy , solid state nuclear magnetic resonance , spinning , nuclear magnetic resonance spectroscopy , dephasing , analytical chemistry (journal) , carbon 13 nmr , magic angle , chemistry , nuclear magnetic resonance , polymer chemistry , organic chemistry , physics , condensed matter physics , quantum mechanics
13 C‐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).