The surface organic modification of tourmaline powder by span-60 and its composite

► Factors that influence the modification effects were investigated. ► The modified tourmaline was characterized with IR, XRD, SEM and TGA curves. ► The amount of negative ions released of modified tourmaline is more than 2.4 times. ► The dispersancy of modified tourmaline in PP is much better. ► The amount of negative ions released of the modified tourmaline/PP is much more.