Preparation and properties of poly(aryl ether ketone)-based phthalonitrile conductive composite film

A series of poly(aryl ether ketone) polymers containing phthalonitrile with relatively high molecular weights showed good film formation and toughness to be the good candidate for matrix of functional composites. To develop the application of bisphthalonitrile resins in the conductive composite membrane materials field, the phthalonitrile resin/multiwalled carbon nanotubes conductive composite membranes were prepared by the solution blending method. The conductive composite membranes have low percolation threshold (0.25 vol.%) and excellent conductive properties. With 0.79% weight fraction of carbon nanotubes, the cross-linking membrane shows a great enhancement in mechanical properties. They have the potential to be alternative candidates in the field of high-temperature, conductive composite membrane materials.