The study of glass superhydrophobicity by modified SiO2-hexadecyltrimethoxysilane (SiO2-m-HDTMS) nanoparticles and mixture of surfactants

摘要

Indeed, which changes will be produced in hydrophobicity behavior of superhydrophobicity glasses when they are in contact with surfactants which are as a detergent? The most prominent point of this paper is study of surfactant nanostructures interactions with superhydrophobic surfaces and investigation of interactions effect on the superhydrophobicity of these surfaces. To answer the question above, it is necessary to prepare hydrophobic surfaces alongside materials having silane and improve their superhydrophobic property by modified SiO2-Hexadecyltrimethoxysilane (SiO2-m-HDTMS) in various concentrations followed by the interaction of surfactants nanostructures with these surfaces and finally, we should study the impact on contact angle. What our studies about the interaction of anionic and cationic-rich solutions showed is that a change in the percentage of surfactants and also their change in concentration caused a change in superhydrophobicity. Additionally, our investigations on beta(sigma) and beta(M) parameters illustrated that in cationic-rich region before CMC, because of existing monomers in cationic-rich region by raising concentration, contact angle contrast to wettability of surface increases. While in anionic-rich region, surfactants monomers are much more stable than aggregates; thus, with an increase in concentration, the number of monomers on surface and therefore the wettability of surface increase. In fact, we demonstrated that surfactant concentration and also the structure of nanomaterial, especially in the anionic-rich region, affect the superhydrophobic surface.