The studies on modification of polybenzoxazines as an attractive alternative to epoxides and traditional phenolic resins have been increased almost exponentially not only for defence and aerospace but also for electronic industrial and technological applications. The characteristics of these polymers such as no need for harsh catalysts, high thermal stability, good mechanical properties, excellent electrical properties and molecular design flexibility and low melt viscosity make this class of polymers a promising candidate for high performance composites. Their facile and versatile syntheses from relatively abundant materials involving phenols, amines, their functional analogues and formaldehyde offer wide range of molecular design flexibility. However, some limitations, such as high curing temperature, on their use in practical applications exist. To overcome these problems and to improve thermal and mechanical properties composites of polybenzoxazines involving graphite, carbon nanotubes, organoclays, boron compounds were prepared. Recently, decrease in curing temperature of the benzoxazine monomer was detected in the presence of aromatic monoboronic acid [1].<br/>In this work, polybenzoxazine based on phenol and m-amino phenyl boronic acid and aniline mixture was prepared and characterized. Our main objective was to decrease the curing temperature of the monomer, and to improve thermal properties such as to thermal stability and char yield of the polybenzoxazine produced. The effect of the type of the functional amine group was investigated by varying the amount of m-amino phenyl boronic acid systematically. Significant Improvement in thermal characteristics became more significant as the amount of m-amino phenyl boronic acid ratio was increased.

Polybenzoxazine based on phenol and <i>m</i>-amino phenyl boronic acid

255th National Meeting (2018)

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Polybenzoxazine based on phenol and m-amino phenyl boronic acid