Characterization Of Sorghum Starch As A Potential Bio-based Adhesive For Particleboard Manufacturing

Abstract

This study investigates the potential of Super 1 sorghum starch-chitosan-based adhesive for eco-friendly particleboards. Sorghum starch was extracted and characterized, its viscoamylographic profile was analyzed, and adhesive composites were prepared with varying chitosan concentrations. FTIR analysis revealed the formation of hydrogen bonds between hydroxyl groups (−OH) on sorghum starch and amino groups (−NH2) on chitosan, enhancing the stability and mechanical strength of the composites. Chitosan addition altered the crystal structure of starch, increasing amorphinity and material flexibility, as evidenced by XRD analysis. Viscoamylographic profiles indicated good gelation ability and viscosity. Sorghum starch-chitosan adhesive holds promise as an alternative to synthetic adhesives for the fabrication of eco-friendly particleboards. Further research is warranted to evaluate the adhesive performance in particleboard production and optimize the formulation and production process for broader construction applications.

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