Abstract
Dynamic triboelectric charging behaviors of polymer films in contact with meta-plate and non-plated iron carrier beads were investigated under controlled atmospheres. Saturated surface potential(Vs) and humidity dependence (S) of the polymer films were dependent on the measured work function of the carrier beads (φ): the values of Vs and S were increased with decreasing φ, indicating that the tribo-charging is described by electron transfer at a metal/Polymer interface. The charging model to account for these results was presented; it assumed the existence of an electrical double layer formed in the vicinity of a film surface by penetration of charged water molecules and of electron-acceptive sites inherent in polymer materials.
Further investigation on the effect of humidity suggested that the charging characteristics of the polymer films were determined by humidity dependent properties of carrier and polymer materials, but the effect was mainly exerted on the polymer film if its polar nature is relatively large.
