Synthesis and Characterization of Polybenzoxazine Vermiculite Nanocomposites

Polybenzoxazine-vermiculite nanocomposites were prepared from two kinds of polybenzoxazine precursors and two kinds of organically modified-vermiculite minerals which were consisted of vermiculite ,hydrobiotite and phlogopite. After treatment of vermiculite minerals by hexadecyl trimethylam monium bromide(CTAB), the d 001 of vermiculite layers of vermiculite mineral increased from 1.43?nm to 2.67?nm and developed d 002=1.34?nm. After organically modified vermiculite intercalated with a polybenzoxazine precursor ( bisphenol A type), The d 001 of vermiculite layers increased from 2.67?nm to 3.63?nm further and developed d 002=1.82?nm and d 003=0.91?nm. It was showed that the polybenzoxazine precursor has intercalated into vermiculite layers. Cured the composites, the diffraction peak of vermiculite d 001 in XRD spectrum vanished and the vermiculite layers were exfoliated.