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This work aims at enhancing the performances of polybenzoxazines by increasing crosslink density through introducing hydrogen bond acceptor. Additional hydrogen bond acceptor, such as 4,4′-bipyridine (Bpy), not only decreases the polymerization temperatures of bisphenol A based benzoxazines, but also modulates the hydrogen bonds. After introducing Bpy, the formation of Type I -OH···N hydrogen bonds...
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