Four modified multi-walled carbon nanotubes (MWCNTs) with diamion-N,N′-bis (salicylidene) Schiff base Cu (II) complexes were successfully prepared by a simple and effective ultrasonic method. Friction and wear properties of 0.1 wt.% of modified MWCNTs were tested in triisodecyl trimellitate, DE and trihydroxymethylpropyl trioleate on 30 N by a microtribometer, respectively, and compared with those of graphene oxide. The structures and morphologies of the nanocomposites were investigated by Fourier-transform infrared (FTIR) spectra and transmis...
