We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
Melt-blended PLA/curcumin-cross-linked polyurethane film for enhanced UV-shielding ability
AI summary Read the abstract
A biomass film was developed by melt-blending polylactic acid (PLA) with curcumin-crosslinked castor oil-based polyurethane, producing a material with strong UV-shielding ability and enhanced mechanical properties. The fully bio-based film is proposed as a sustainable plastic replacement for food packaging applications.
Abstract Biomass films with ultraviolet (UV)-shielding ability have attracted considerable attention. Curcumin was introduced into castor oil-based polyurethane (CCPU) as a chain extender, which was melt with polylactic acid (PLA) as a reinforcement to obtain biomass UV-shielding film. The excellent UV absorption and antioxidant qualities of curcumin contributed to the impressive UV-shielding capacity (97.6% UV radiation absorption) and antioxidant (51% free radical scavenging) of PLA/CCPU-20 film. In the scanning electron microscopic images of film fracture, the mixing of CCPU elastomer into the PLA matrix caused the blend films to exhibit significant toughening fracture characteristics compared to the pure PLA film. The excellent thermal stability, low water swelling degree, and low water solubility of PLA/CCPU blend films were maintained after CCPU was added to the PLA matrix. Therefore, the PLA/CCPU blend films can be considered as a potential packaging material because of its favorable UV-shielding properties and film stability.
More Papers Like This
Hydrogen-bonded lignin-acrylic copolymer/WPU composites with Integrated UV shielding, antioxidancy and degradability
AI summary Read the abstract
Researchers synthesized a lignin-acrylic copolymer from rice straw waste and blended it with waterborne polyurethane to create a composite film with 43% higher tensile strength, near-total UV blocking, and dramatically improved antioxidant capacity, offering a biodegradable, microplastic-reducing alternative to conventional plastic films.
Sustainable lignin-curcumin functionalized PVA films crosslinked with citric acid for cherry tomato preservation.
AI summary Read the abstract
Researchers reinforced polyvinyl alcohol films with alkali lignin extracted from sugarcane agricultural residue, crosslinked with food-grade sodium trimetaphosphate, and functionalized with curcumin, producing biodegradable packaging with 89% radical scavenging activity, UV shielding, and antimicrobial properties that meaningfully extended cherry tomato shelf life at ambient temperature.
Ultraviolet Shielding Performance of Coconut Coir as a Filler in Low-Density Polyethylene (LDPE) Plastic Mulch
AI summary Read the abstract
Researchers explored using coconut coir as a natural filler in low-density polyethylene plastic mulch to improve its resistance to UV degradation. Since UV exposure breaks down LDPE mulch into microplastics in agricultural soils, the coconut coir additive was tested for its UV shielding performance. The study investigates a potential approach to reduce microplastic generation from agricultural plastic films while using a renewable, natural material.
Biodegradable Polyurethane Derived from Hydroxylated Polylactide with Superior Mechanical Properties
AI summary Read the abstract
Researchers synthesized biodegradable polyurethane using polylactide polyols derived from lactide, finding that increasing the polylactide content dramatically improved tensile stress (from 5 to 37 MPa), elongation, and toughness, while the resulting films fully degraded to CO2 and water within 6 months in soil.
Bilayer Films of Poly(lactic acid) and Cottonseed Protein for Packaging Applications
AI summary Read the abstract
Researchers produced bilayer films combining polylactic acid with cottonseed protein isolate for food packaging applications and found that the bilayer design improved mechanical and barrier properties compared to single-layer PLA films while maintaining biodegradability.
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.