Effect Croslinking on Characteristics of Silica Chitosan Composite from Vulcanic Ash of Sinabung Mount and Shrimp Husk by Sol Gel Method

: This research was carried out to determine the effect of glutaraldehyd croslinking on the synthesis of silica chitosan composites from the Na 2 SiO 3 precursor of volcanic ash of Sinabung and chitosan from shrimp husk by sol gel method. The synthesis of the silica-chitosan composite by mixing the 20 mL Na 2 SiO 3 precursors with (2% : 3%) (w/v) chitosan in the aid of glutaraldehyde as crosslinking agent and without glutaraldehyde. Modifications with sol gel is done because it is more simple and rapid progress as well as the binding reaction of the ligands mobilized. Prepared Silica Chitosan Composit using glutaraldehyd labeled (Si-g-ChC) and Silica Chitosan Composit without glutaraldehyd labeled (SiChC) . The characteristic of the composit material (Si-g-ChC) and (SiChC) used by FTIR and XRD.