Polysilsesquioxane-reinforced phosphorous containing bis(4-maleimidophenyl)benzoxazine hybrid nanocomposites

Abstract

In this study, octa(aminophenyl)silsesquioxane (OAPS), octakis(dimethylsiloxypropylglycidylether) silsesquioxane (OG) and phosphorous skeletal bis(4-maleimidophenyl)benzoxazine were synthesized and characterized. The polyhedral oligomeric silsesquioxane (POSS) derivative (OAPS and OG)-reinforced polybenzoxazine (PBZ) hybrid nanocomposites were prepared by thermal method. The chemical reactions between POSS and PBZ were confirmed by Fourier transform infrared spectroscopy. The effect of the incorporation of POSS derivatives on the properties including thermal, dielectric properties and water absorption behaviour of POSS/PBZ hybrids was analyzed and discussed systematically. The test results indicate that the addition of POSS into PBZ increased the thermal stability and decreased the values of dielectric constant and dielectric loss. The morphology of the POSS-PBZ hybrid nanocomposites was characterized using x-ray diffraction, confocal optical microscopy, scanning electron microscopy, transmission electron microscopy and atomic force microscopy.