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Curing kinetics of fluorene containing benzoxazine investigated by nonisothermal differential scanning calorimetry

Authors

  • Yanbing Lu,

    Corresponding author
    1. Institute of Polymer Science and Engineering, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China
    • Institute of Polymer Science and Engineering, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China
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  • Mingming Li,

    1. Institute of Polymer Science and Engineering, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China
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  • Lili Ke,

    1. Institute of Polymer Science and Engineering, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China
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  • Ding Hu,

    1. Institute of Polymer Science and Engineering, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China
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  • Weijian Xu

    1. Institute of Polymer Science and Engineering, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China
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Abstract

Fluorene 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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