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A ductile and strong bioplastic film based on biodegradable polyurethane nanoparticle-crosslinked chitosan
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Researchers fabricated chitosan bioplastic films crosslinked with biodegradable polyurethane nanoparticles, achieving an elastic node-grid microstructure that simultaneously improved both tensile strength and ductility—properties that typically trade off—making the films viable candidates for flexible packaging applications.
This study presents a facile strategy for fabricating chitosan/polyurethane nanoparticle (PU NP) bioplastic films that simultaneously enhance both ductility and strength due to their unique elastic node-grid structure.
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This paper is not about microplastics in an environmental or health context; it describes the development of xylan-chitosan bioplastic films crosslinked with citric acid as a petroleum-free alternative packaging material, focused on material properties rather than pollution or exposure.
Engineering chitosan-silk fibroin laminates for use as strong, tough, and biodegradable alternatives to plastic packaging
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This study examined the photodegradation of common plastic polymers under UV irradiation, tracking changes in surface morphology, molecular weight, and fragment generation over time. Degradation rates varied substantially by polymer type and irradiation intensity, with fragmentation generating secondary microplastic particles that persisted in the experimental system.
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Researchers developed biodegradable films from polyhydroxybutyrate (PHB) extracted from microalgae combined with polyurethane and copper oxide nanoparticles for use as bioplastic packaging. The films showed antimicrobial activity against multiple pathogens, no cytotoxic effects on human cells, and improved mechanical and surface properties with CuO nanoparticle loading.
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Researchers created a biodegradable plastic film in the lab using starch from an elephant foot yam plant combined with tiny chitosan particles, vinegar and glycerol. Testing different amounts of chitosan, the film with 5% chitosan showed the best strength, water resistance and heat stability, suggesting potential use for packaging instead of conventional plastic.
Obtención de películas biodegradables mediante la Gestión de Residuos Orgánicos que contienen Almidón y Quitosano
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Researchers produced biodegradable films by combining potato starch with chitosan extracted from squid pens, evaluating mechanical properties across different blend ratios. The starch-chitosan composite achieved a tensile strength of 24.59 MPa — surpassing low-density polyethylene — demonstrating its potential as a mechanically competitive, fully biodegradable alternative to conventional plastic films.
Research digests by email
When a large batch of papers lands in the Atlas, we read through it and send a short write-up of what stood out.