Surface functionalization of hexagonal boron nitride and its effect on the structure and performance of composites

► Organized hexagonal boron nitride (OhBN) was synthesized using a new method. ► OhBN has 5 times more amine groups than original hexagonal boron nitride (hBN). ► OhBN/bismaleimide (BD) composites have remarkably improved integrated performances. ► The surface nature of fillers plays obvious effect on the structure of composites.