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

机译:N-15固态核磁共振波谱研究苯基苯并恶嗪的表征和固化

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摘要

A difunctional 1,3-benzoxazine compound, 2,2'-(3-phenyl-4-dihydro-1,3,2-benzoxazine)propane (B-a), derived from bisphenol-A, N-15-enriched aniline, and formaldehyde was synthesized and characterized using N-15-NMR and C-13-NMR spectroscopies. The observed resonances in the solid-state N-15- and C-13-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 degrees C. The polymerization inspired peak intensity changes and line-width broadenings in the NMR spectra. (C) 1998 John Wiley & Sons, Inc. J Appl Polym Sci 70: 1401-1411, 1998. [References: 24]
机译:一种双官能的1,3-苯并恶嗪化合物,2,2'-(3-苯基-4-二氢-1,3,2-苯并恶嗪)丙烷(Ba),其衍生自双酚A,富含N-15的苯胺和合成甲醛并使用N-15-NMR和C-13-NMR光谱进行表征。固态N-15-和C-13-NMR光谱中观察到的共振与基于化学结构计算的化学位移显示出良好的一致性。 B-a样品在150和200摄氏度下固化。聚合反应激发了NMR光谱中的峰强度变化和线宽加宽。 (C)1998 John Wiley&Sons,Inc. J Appl Polym Sci 70:1401-1411,1998。[参考:24]

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