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Study of the characterization and curing of a phenyl benzoxazine using 15N solid-state nuclear magnetic resonance spectroscopy

✍ Scribed by Vernon M. Russell; Jack L. Koenig; Hong Yee Low; Hatsuo Ishida

Publisher
John Wiley and Sons
Year
1998
Tongue
English
Weight
266 KB
Volume
70
Category
Article
ISSN
0021-8995

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✦ Synopsis

A difunctional 1,3-benzoxazine compound, 2,2Ј-(3-phenyl-4-dihydro-1,3,2benzoxazine)propane (B-a), derived from bisphenol-A, 15 N-enriched aniline, and formaldehyde was synthesized and characterized using 15 N-NMR and 13 C-NMR spectroscopies. The observed resonances in the solid-state 15 N-and 13 C-NMR spectra showed good agreement with the calculated chemical shifts which are based on the chemical structure. The B-a samples were cured at 150 and 200°C. The polymerization inspired peak intensity changes and line-width broadenings in the NMR spectra.

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