Effect of anilines as synthesis component on the hydrophobicity of silica.

A.C. TURALLAS, G. ROMANELLI AND P. VÁZQUEZ.

Como, Italia

Workshop; III Workshop Oxide Basic; 2004

Departamento de Ciencia Química, Física y Matemática (Sede Como)

Among the inorganic materials, the silica receives considerable interest because different degrees of hydrophobic/hydrophilic are determining its dispersion in the polymeric matrix. The silica can have hydrophobic properties when its surface is functionalized. This process requires the presence of silanol groups at the surface. The purpose of this investigation is to know the grafting process on silica prepared by sol-gel. The principle of the investigation work consists in comparing the grafting of anilines, with different active groups, on silica to obtain different surface degree of hydrophobicity. For a better understanding of these solids, the characterization of nature species were determined by FT-IR, XRD, DTA-TGA and surface area (SBET).