Tribology Behaviors of in situ Nanoparticles Doped Molecular Deposition Films

Abstract

The molecular deposition films of poly (diallyl dimethylammonium chloride) (PDDA) and poly (acrylicacid) (PAA) with Cu(II) on quartz and glass substrates have been prepared in laboratory first, then different bilayers films were puted into fresh Na2S aqueous solution. As result the CuS nanoparticles wrere fabricated in multilayer polyelectrolyte molecular deposition films in situ. They are homogeneously distributed throughout the whole film. The structure and nanotribological properties of composite films were analyzed by ultraviolet-visible (UV) spectroscopy, XPS and atomic force microscope (AFM). It was found that these films had a much smaller friction force than their substrates and pristine films.