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Synthesis, characterization of new bisphenol-based benzoxazines and the thermal properties of their polymers

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Abstract

New bisphenol-based benzoxazines (BBA-a and BBA-bra) were synthesized from bisphenol containing trityl group, paraformaldehyde, aniline and 2,4,6-tribromoaniline by a solventless method. The chemical structure of the monomers was analyzed by FTIR, 1H NMR and elemental analysis. FTIR and differential scanning calorimetry (DSC) indicated that the polymerization of BBA-a and BBA-bra was thermally initiated and occurred via ring opening of benzoxazine monomers. Comparing with that of BBA-a, the curing exothermic peak of BBA-bra shifted from 230 to 245 °C. Thermogravimetry (TG) showed that PBZ from BBA-a and BBA-bra (named as PBBA-a and PBBA-bra, respectively) had superior thermal stability. The char yields of PBBA-a and PBBA-bra at 800 °C were 42.37 and 48.30%, respectively.

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Acknowledgements

The project sponsored by the Scientific Research Foundation for the Returned Overseas Chinese Scholars, National Technology Support Program (2015BAB07B04), China.

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Authors and Affiliations

  1. School of Chemistry and Chemical Engineering, Hubei Polytechnic University, Huangshi, 435003, People’s Republic of China

    Shengfang Li, Chenglu Yang & Chen Li

  2. Hubei Key Laboratory of Mine Environmental Pollution Control and Remediation, Hubei Polytechnic University, Huangshi, 435003, People’s Republic of China

    Shengfang Li

  3. School of Materials Science and Engineering, Wuhan University of Technology, Whuhan, 430070, People’s Republic of China

    Chenglu Yang, Chen Li & Shilin Yan

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  1. Shengfang Li
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  2. Chenglu Yang
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Correspondence to Shengfang Li.

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Li, S., Yang, C., Li, C. et al. Synthesis, characterization of new bisphenol-based benzoxazines and the thermal properties of their polymers. J Therm Anal Calorim 128, 1711–1717 (2017). https://doi.org/10.1007/s10973-017-6099-5

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  • DOI: https://doi.org/10.1007/s10973-017-6099-5

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