Synthesis and Characterization of Porous Silica Gels for Biomedical Applications‪.‬

Abstract: In the past few years, the sol-gel process has been increasingly employed for the processing of bioactive ceramics and gels. The growing interest in these systems is based on their ability to induce in-vitro formation of a surface crystalline Hydroxyapatite (HAP) rich layer on the material surface. This behavior is considered of a bio-apatite layer on to the stainless steel material surface. In the present investigation porous silica gels with high surface areas were prepared from tetraethylorthosilicate (TEOS) and Polyacrylic acid (PAA) of high molecular weight in acid media by a sol-gel method. PAA content and aging temperatures were varied in order to obtain different structures. The synthesized samples were characterised using FT-IR, XRD, and TG-DTA.