Preparation of Adhesive from Cassava Starch and Evaluation of its Physicochemical Properties

Abstract

Adhesives can be used as sealing agents to eliminate the effect of self-loosening caused by dynamic loads, for sealing areas to prevent oxidation and corrosion, for waterproofing, and so on. The aim of the present study is to prepare an adhesive from fresh cassava roots and to evaluate its physicochemical properties, such as density, viscosity, and pH. Adhesives are prepared by mixing starch, hydrochloric acid, and borax. Three samples of adhesives were prepared by mixing various proportions (S1: 5 g starch, 100 mL hydrochloric acid, and 5 g borax; S2: 8 g starch, 100 mL hydrochloric acid, and 5 g borax; S3: 5 g starch, 120 mL hydrochloric acid, and 8 g borax). The physicochemical properties of prepared adhesives were compared with a commercial adhesive, and S2 was found to have properties closer to the commercial adhesive. Hence, it could be concluded that an increase in starch content by 60% could improve the properties of adhesives.