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Characterization of biodegradable composite based on microalgae modified glycerol?plasticized?starch films

Schematic representation of the development of starch bioplastic film using a solution?casting method.The present study focuses on how microalgae protein biomass, such as spirulina (SP), can be used to create thermoplastic blends and algal?based bioplastics. Algal bioplastics can be customized for a variety of material properties and applications while remaining biodegradable. In this work, the casting approach has been performed to create spirulina?starch?glycerol composite films by adding SP to plasticized starch films. The characteristics and properties of the composite films were inspected by Fourier transform infrared (FTIR), scanning electron microscope (SEM), tensile strength, antimicrobial activity, and biodegradation analysis. The composite film with 3% SP was found to have the best combination of mechanical and chemical properties, and additional SP causes the mechanical properties to degrade. The results demonstrated that bio?composites prepared by plasticized starch and containing SP could be promising in the development of new environmentally friendly bio?nanocomposites for interesting applications in food packaging.

Publication date: 16/12/2023

Polymer Engineering and Science


This project has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement No 870292.