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Effects of aromatic diboronic acid on thermal charateristics of polybenzoxazines based on phenol and aniline
Date
2018-11-01
Author
Telli, Aysegul Hisar
Hacaloğlu, Jale
Metadata
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This work is licensed under a
Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License
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In this work, polybenzoxazines based on phenol and aniline were prepared by curing as-synthesized and purified monomers in the presence of aromatic diboronic acid, BDBA. Condensation reactions between BOH groups of diboronic acid and phenolic OH groups of benzoxazine took place during curing only when unreacted phenol, or low mass oligomers were present in the medium. Generation of fragments involving B-O-C groups and significant improvement in thermal characteristics were detected upon curing the as-synthesized monomer in the presence of even 5 wt %BDBA. On the other hand, enhancement in thermal characteristics was not detected for the polybenzoxazine prepared by curing the purified monomer, when the wt % of BDBA was lower than 15%.
Subject Keywords
Polybenzoxazine
,
Aromatic diboronic acid
,
Thermal degradation
,
Direct pyrolysis mass spectrometry
URI
https://hdl.handle.net/11511/31947
Journal
EUROPEAN POLYMER JOURNAL
DOI
https://doi.org/10.1016/j.eurpolymj.2018.08.053
Collections
Graduate School of Natural and Applied Sciences, Article