Authors: G. Hernández-Padrón, T. Gómez-Quintero, A. Blanco-Hernández
Affilation: UNAM, Mexico
Pages: 218 - 219
Keywords: polystyrene recycled, antifog, nanohybrid
A hybrid material consisting of SiO2 nanoparticles embedded in polystyrene recycled matrix has been developed. A polymer of polystyrene recycled functionalized (PSR-F) was used to influence the morphological and antifog properties of sol-gel synthesized silica nanohybrid. Silica nanoparticles are produced from alkoxide precursors in the presence of polystyrene recycled; hence a final material consisting of SiO2 globules entangled inside a polystyrene recycled matrix is obtained. Under the appropriate experimental conditions, chemical unions can be established between the SiO2 silanol surface groups and the PSR-F terminal chains to render SiO2/PSR-F core-shell type compounds. The functionalization of the polystyrene recycled matrix has the purpose in situ of uniting these carboxyl groups OH of the surface of the silanol groups during the process sol-gel. The size particle of the final SiO2 influences in the transparency or opacity properties of the final product. In this way, opaque or transparent solid substrata can be obtained, each of these optical conditions depends on the amounts of reactants employed to prepare the nanohybrid specimen. The nanohybrid SiO2/PSR-F sample was used for coatings in glass and evaluated antifog properties. The solid samples were characterized by FT-Infrared, Raman dispersive, flexion properties and scanning electron microscopy.
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