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Upcycling mixed household organic waste into starch-based bioplastics: influence of mineral additives on mechanical and degradation performance
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DOI：10.1007/s42247-026-01476-7.png)
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Abstract
En 中文
Food waste is a persistent environmental issue, but it also represents a promising raw material for bioplastic production. This study aims to develop and characterize biodegradable bioplastics from mixed common household organic residues, specifically a mix of potato, banana, apple, and tomato peels. The methodology in this study involved extracting starch from these wastes, followed by bioplastic synthesis using glycerol as a plasticizer, using calcium carbonate (CaCO₃) and sodium carbonate (Na₂CO₃) as modifying agents. The resulting films were analyzed through microbial activity, biodegradation assays, thermochemical degradation and film tensile test. Results showed that bioplastics modified with CaCO₃ exhibited superior mechanical performance, with an elastic modulus of 1.8 MPa and maximum tensile strength of 0.48 MPa, compared to the standard bioplastic (1.08 MPa and 0.43 MPa, respectively). Biomass degradation in soil ranged from 57.8 wt% to 72.1 wt% after 60 days. Functional groups analysis indicated chemical interactions between starch and additives, while microbial tests showed limited Penicillium digitatum colonization before 24 h. The study concludes that household food waste can be effectively upcycled into biodegradable plastics with enhanced mechanical properties and degradation behavior, contributing to sustainable material development and food waste valorization.
Keywords:
Bioplastics
Food waste
Household organic waste
Sustainable materials
Organic residues
Journal
E
IF:
4.1
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503
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2.8K
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