Preparation of Inorganic &organic-inorganic Hybrid by Sol-gel Method

In This study synthesis of inorganic oxide material by a sol-gel technique through the formation of colloidal suspension (sol) and gelation of the sol into the gel enables incorporation of heat-sensitive active substances into the material during processing. Sol can be further processed into forms, such as monoliths(rod shape). The objectives of this study were to evaluate sol-gel derived silica gel as an implantable (monoliths). The structural properties of the prepared samples were studied ,using X-ray diffraction (XRD) and Fourier transform infrared (FTIR), UV-VIS. Spectroscopy of xerogel silica and liner shrinkage of the samples.the sample prepared by mixing TEOS,ethonal,water,and HCL , TEOS and ethonal were mixing and stirred for 10 min at room temp.then 0.1 MHCL was gradually added to the solution until a water to TEOS molar ratio of R=2, R=5. The results shows that, silica xerogel has amorphous structure , FTIR spectroscopy has been used to find the amount of water (OH) ,it was found that when increase in temperatures the R (R=water: TEOS molar ratio) (R=2, R=5) the decrease intensity of H2O absorbance are consistent with loss of physisorbed water.