Abstract :
[en] The present study aims at investigating the elaboration of a ZnO/sol-gel nanocomposite coating, whichcan provide a number of properties such as UV-absorption, mechanical and barrier effects, etc. depend-ing on targeted applications. The sol-gel coating formulation is an inorganic-organic hybrid based ontetraethoxysilane (TEOS) and glycidyloxypropyltrimethoxysilane (GPTMS). In order to ensure good dis-persion in the sol-gel matrix, ZnO nanoparticles were surface-modified with a silane coupling agent.The functionalization was confirmed by Fourier transform infrared (FTIR) and thermogravimetric (TGA)analyses. Field emission gun-scanning electron microscopy (FEG-SEM) characterization of the nanocom-posite film reveals a homogeneous distribution and dispersion of the ZnO nanoparticles throughout thefilm. Glow discharge optical emission spectrometry (GDOES) analysis allows evaluating the thicknessof coatings and getting a depth composition profile. Some properties such as UV-absorption and bar-rier effect are highlighted using a UV-visible spectrometer and electrochemical impedance spectroscopy(EIS), respectively. The effect of ZnO concentration is also presented.
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