Synthesis and morphological study on the nanocomposite hydrophilic coatings

Hydrophilic nanocomposite coatings based on epoxy silane were prepared with incorporation of aminoethylaminopropyltrimethoxysilane by a sol-gel process. It was found out that the hydrophilicity is affected remarkably in the presence of non-ionic surfactant. Moreover, scanning electron microscopy (SEM) and Si mapping micrographs indicated that there is a uniform distribution of silica particles in the coatings with either lower or higher amounts of aminoethylaminopropyltrimethoxysilane. Furthermore, the effect of aminoethylaminopropyltrimethoxysilane on transparency of the coatings was evaluated in the absence and presence of surfactant. Fourier transform infrared (FT-IR) and attenuated total reflectance infrared spectroscopy (ATR-IR) techniques were employed to study the different steps of nanocomposite hybrid coating synthesis. Surface topography of the coatings investigated by atomic force microscopy (AFM) technique and transmission electron microscopy (TEM) indicated that the silica particles' dimensions are at the nano-scale.