Preparation of exfoliated epoxy/alpha-zirconium phosphate nanocomposites containing high aspect ratio nanoplatelets
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abstract
High-crystallinity -zirconium phosphate (-ZrP) crystals which contain stacks of high aspect ratio nanoplatelets were synthesized and exfoliated with tetra-n-butylammonium hydroxide in aqueous dispersion. The exfoliated -ZrP nanoplatelets were then transferred into water-miscible organic solvents, such as acetone, by centrifugation and re-dispersion. The resulting exfoliated -ZrP nanoplatelets in organic solvents can be easily utilized to prepare polymer nanocomposites. Through such an approach, epoxy/-ZrP nanocomposites containing high aspect ratio -ZrP nanoplatelets have been prepared. The presence of the well-exfoliated nanocomposite structure is confirmed by powder X-ray diffraction and transmission electron microscopy. 2007 American Chemical Society.