Fabrication and characterization of magnetic nanoparticles reinforced polyacrylonitrile nanocomposites

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Conference Proceeding

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Composites reinforced with micron-size fillers are currently used in many applications. Nanocomposites reinforced with nano-scale fillers have greater efficiency due to their small particle size (high specific surface area), and have the potential to perform better than microcomposites in electronic devices. Our main focus is to determine the highest particle loading of the composites and determine the effect of the nanoparticles on property of polyacrylonitrile. Iron nanoparticles reinforced polyacrylonitrile nanocomposites with various particle concentrations were fabricated. Iron nanoparticles were dispersed in a polyacrylonitrile matrix in dimethyformamide. The best polyacrylonitrile concentration in the solvent was determined to be 0.087 g/ml. The composites were observed for particle dispersion and the highest particle loading was achieved at 80 wt%. When tested for thermal stability, the pure polyacrylonitrile was stable to 300 degrees Celsius, whereas the composites decomposed until they became stable above 500 degrees Celsius. This method of particle dispersion is a novel process that will enable immediate separation of the composite from the solvent without particle degradation. Due to its simplicity, it has the potential to be used in a large-scale nanocomposite manufacturing.

Publication Source (Journal or Book title)

American Society for Composites - 23rd Technical Conference of the American Society for Composites 2008

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