Synthesis and study of the thermal crosslinking of bis(m‐aminophenyl) methylphosphine oxide based benzoxazine |
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Authors: | M Spontón M S Larrechi J C Ronda M Galià V Cádiz |
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Institution: | Departament de Química Analítica i Química Orgànica, Universitat Rovira i Virgili, Campus Sescelades, Marcel.lí Domingo s/n., 43007 Tarragona, Spain |
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Abstract: | Bis(m‐aminophenyl)methylphosphine oxide based benzoxazine (Bz‐BAMPO) was obtained using a three‐step synthetic method from the aromatic diamine and 2‐hydroxybenzaldehyde as starting materials. The structure and purity of the monomer was confirmed by elemental analysis, FTIR, 1H NMR, 13C NMR and 31P NMR spectra. The curing kinetics of Bz‐BAMPO was investigated by nonisothermal differential scanning calorimetry (DSC) at different heating rates and by FTIR spectroscopy. The isoconversional method was used to evaluate the dependence of the effective activation energy on the extent of conversion. The evolving factor analysis (EFA) method was applied to the spectroscopic FTIR data obtained in monitoring benzoxazine homopolymerizations. © Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 46: 7162–7172, 2008 |
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Keywords: | benzoxazine crosslinking flame retardance infrared spectroscopy |
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