Abstract: The polystyrene(PS)-based nanocomposite electrical conductive foams filled with multi-walled carbon nanotubes(MWCNTs) were prepared by concentrated emulsions polymerization, where the conductive poly(3,4-ethylene dioxythiophene): poly(styrene sulfonate) (PEDOT/PSS) was introduced into and acted as surfactant. The effect of fillers content on the porous morphology and electrical conductivity of the materials were characterized by SEM and electrometer. The results show that the polymer foams with different porous structure and conductivity can be achieved with the different loading of fillers and conductive surfactant. Furthermore, the incorporation of the conductive polymer can greatly improve the electrical conductivity of the PS-MWCNTs composite foams.

Key words: polystyrene, poly(3, 4-ethylene dioxythiophene), poly(styrene sulfonate), multi-walled carbon nanotube, concentrated emulsion, conductivity