Abstract
Gold and silver nanoparticles in polyelectrolyte multilayers film can be prepared by alternate immersion of a substrate in poly(diallyldimethylammonium) chloride (PDDA)–AuCl4− complexes solution and poly(acrylic acid) (PAA)–Ag+ complexes solution followed by reduction of the metal cations (Au3+, Ag+) through immersion of NaBH4 solution. UV–vis spectroscopy, atomic force microscopy (AFM), X-ray photoelectron spectra (XPS), scanning electron microscope (SEM) and transmission electron microscope (TEM) were used to confirm the successful construction of the polyelectrolyte multilayers film and the formation of gold and silver nanoparticles. The coefficient of friction as a function of sliding velocity and normal load also has been studied. The nanoparticles composite polyelectrolyte multilayers exhibited increased wear resistance compared with the pure polyelectrolyte multilayers.
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