Cotton textiles were transformed into hydrophobic fabrics via the application of 3-chloropropylthriethoxysilane-functionalized silica nanoparticle spray coatings. Silica particles were measured to be < 50 nm, as determined by dynamic light scattering (DLS). The incorporation of hexadecyltrimethylammonium bromide (HTAB), a surfactant, into the nanosilica alcohol-based sprays resulted in a suspension that was stable for at least a week. Stability and turbidity tests of samples point to smaller particle size (silica nanoparticles = 24.3 ± 8.5 nm) as the main contributor to possibly providing transparency, as evidenced when sprayed in colored (black) textiles, while still contributing to hydrophobicity/ superhydrophobicity of the cloth.
Mendoza, M. C. S., & Yu, G. U. (2021). Formulating 3-chloropropyltriethoxysilane modified silica nanoparticle sprays as hydrophobic transparent coatings onto cotton textiles. Philippine Journal of Science, 150(3), 1069–1076. https://philjournalsci.dost.gov.ph/publication/regular-issues/past-issues/105-vol-150-no-3-june-2021/1427-formulating-3-chloropropyltriethoxysilane-modified-silica-nanoparticle-sprays-as-hydrophobic-transparent-coatings-onto-cotton-textiles