Modifikasi Pati Sagu Sebagai Bahan Baku Perekat Bubuk

Abstract

Adhesive products used nowadays are mostly produced from synthetic materials that can pose adverse health effect to human. Natural materials like sago starch are predicted to have adhesion strength, therefore they might be potential to substitute synthetic materials. This research was intended to develop adhesive powder using dextrin derived from modified sago starch as a raw material. The expected outputs of this research were information about the characteristic of adhesive solution, application of the adhesive powder, and comparison of adhesion power of various adhesive strength. Three dextrin products (white, yellow and British Gum dextrin) utilized as raw materials for adhesive are chemically modified through dry heating at 90 ⁰C with the addition of HCl 0.1 N as the catalyst. The dextrins were analyzed for their characteristics, processed into solution and then the quality of the solution was evaluated. Furthermore, the dextrin solution was dried into powder and formulated so that in this application stage, the best adhesive powder, determined by its adhesion strength were obtained. The findings suggested that characteristics of the dextrin and quality of the adhesive reached the established tolerance limit. The best adhesive solution was derived from white dextrin rested for 10 minutes with adhesion strength of 10.58 kg/cm2. In the application stage, the best result for adhesive powder with the previously set formula, which was soaking method with powder to water ratio of 50:50, was obtained from white dextrin with adhesion strength of 10.50 kg/cm2.