Abstract
AbstractFluorene containing benzoxazine monomer (B‐pbf) was synthesized from 9, 9‐bis(4‐hydroxyphenyl) fluorene, aniline, and paraformaldehyde via a solution method. The chemical structure of B‐pbf was characterized with FTIR and 1H‐NMR. The curing reaction of B‐pbf was investigated by nonisothermal differential scanning calorimetry (DSC) at different heating rates. The kinetic parameters and the kinetic models of the curing processes were examined utilizing Kissinger, Ozawa, Flynn‐Wall‐Ozawa, and Friedman methods. The average activation energy of the curing reaction was determined to be 95.1 kJ mol−1 and 99.0 kJ mol−1, respectively, according to Kissinger and Ozawa method. The autocatalytic kinetic model was found to be the best description of the investigated curing reaction. The reaction order m and n are 0.95 and 2.03, respectively. In addition, the predicted curves from the kinetic models fit well with the nonisothermal DSC thermograms. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2011
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