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Eco-Friendly Bioplastic Material Development Via Sustainable Seaweed Biocomposite
Summary
Researchers developed a seaweed-based bioplastic film using Gracilaria edulis algae combined with starch, glycerol, and chitosan. The resulting material showed mechanical properties comparable to starch-based commercial plastics, good biodegradability, and compostability, and showed potential for use in low-moisture food packaging. This work contributes to the effort to replace petroleum-based plastics with renewable alternatives that break down in the environment rather than persisting as microplastic pollution.
Abstract The study focused on the development of an environmentally friendly bioplastic material using sustainable seaweed-based biocomposites. Algal biomass ( Gracilaria edulis ) was processed and combined with starch, glycerol, glacial acetic acid, and chitosan to create flexible, homogenous biopolymer films. These films exhibited comparable physical properties to commercial plastics and retained their inherent colour post-processing. Spectroscopic analysis revealed intense UV-Vis peak points aligned with seaweed composition. Mechanical testing demonstrated adequate strength and flexibility, similar to starch-based bioplastics, with a tensile strength of 3.383 MPa and lower elongation strength of about 31.90 %. Material migration tests indicated a preference for water, suggesting suitability for low-moisture foods. The bioplastic film displayed notable biodegradability and compostability, showcasing its potential as a sustainable alternative for food packaging. This innovative contribution advances eco-friendly bioplastic material, addressing plastic pollution and promoting biocomposite use.