Optimization of Bio-Based Adhesive Synthesis From Gelatin and Euphorbia abyssinica Latex

Abstract

This investigation is an attempt to extract bio-based adhesives from gelatin and plant latex to overcome the negative effects of synthetic adhesives. Since synthetic adhesives (CM-43) have environmental impact due to resource depletion, production emission, toxicity and pollution, and nonbiodegradability character, bio-based adhesive utilized renewable resources, which has biodegradability, contains nontoxic chemicals, and has eco-friendly properties. So, this bio-based adhesive was extracted by mixing plant resins from Euphorbia abyssinica as additives with gelatin through optimization. The factors in the synthesis of bio-based adhesive were temperature, time, and concentration with levels of 50°C–60°C, 30–60 min, and 50%–75% gelatin; and the optimum level was found 50°C, 45 min, and 75%, respectively, with the optimum result of 282.12 g gel strength. The characteristics of the resulting bioadhesive were 6.25 cP, 6.85, and 11.53% of viscosity, pH, and moisture content values, respectively. The performance of the bioadhesive was examined in terms of peel and shear strength, and it has an average value of 6.645 N/mm and 198.1 N, respectively. So, this research is aimed at overcoming the environmental burden of synthetic adhesives by the production of alternative bioadhesives from gelatin and plant resin.