Astonishingly distinct lubricity difference between the ionic liquid modified carbon nanoparticles grafted by anion and cation moieties

Abstract The astonishingly distinct lubricity difference between the ionic liquid modified carbon nanoparticles grafted by anion and cation moieties (A-g-CNPs C-g-CNPs) was well established as additives of polyethylene glycol (PEG200). peripheral positively charged inner parts C-g-CNPs could successively absorb onto friction interfaces electrostatic interactions to form organic—inorganic electric double layer structures, tremendously boosting PEG200. Contrarily, preferentially adsorption negatively but repulsion determined weak embedded stability A-g-CNPs interfaces, even impairing This work can offer solidly experimental theoretical guidance for designing developing high-performance nanoadditives molecules.