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61,005 resultsShowing papers similar to Fabrication of biodegradable poly (lactic acid)/carbon nanotube nanocomposite foams: Significant improvement on rheological property and foamability
ClearOptimisation des mousses de PLA produites par méthode supercritique : Influence de la modification chimique et de l'incorporation de CNC sur les structures cellulaires résultantes
Researchers investigated the influence of chemical modification and cellulose nanocrystal (CNC) incorporation on the properties of polylactic acid (PLA) foams produced by supercritical CO2 foaming, motivated by the need for biodegradable alternatives to microplastic-generating petroleum-based foam materials. Chemical modification improved PLA melt elasticity and resulted in significant changes to cellular foam structure, advancing the development of biodegradable packaging foams.
ScCO2-assisted fabrication and compressive property of poly (lactic acid) foam reinforced by in-situ polytetrafluoroethylene fibrils
Researchers developed biodegradable poly(lactic acid) foam reinforced with polytetrafluoroethylene fibrils using supercritical CO2 foaming, achieving a 30% improvement in specific compressive strength and two orders of magnitude increase in storage modulus at 5 wt% PTFE content. The approach improves PLA's typically poor melt strength and slow crystallization, making it a more viable bio-based alternative to petroleum-based plastic foams.
Modification of Poly(lactic acid) by the Plasticization for Application in the Packaging Industry
Researchers investigated the modification of poly(lactic acid) through plasticization to improve its mechanical properties for use in packaging industry applications as a biodegradable alternative to conventional plastics.
Impact of the Incorporation of Nano-Sized Cellulose Formate on the End Quality of Polylactic Acid Composite Film
Researchers found that incorporating nano-sized cellulose formate fillers, including cellulose nanofibrils and nanocrystals, into polylactic acid films significantly improved mechanical strength and barrier properties while maintaining the biodegradable character of the composite, offering a path toward higher-performance sustainable packaging.
Lightweight carbon foam obtained from post-use polyethylene terephthalate bottles, properties, and potential applications
Researchers synthesized lightweight carbon foam from post-consumer PET plastic bottles via a controlled carbonization process, characterizing the foam's physical and chemical properties and exploring its potential as a value-added material from plastic waste recycling.
PET foaming: development of a new class of rheological additives for improved processability
This paper describes development of rheological additives to improve PET foaming for lightweight packaging, as an alternative to hard-to-recycle foamed polystyrene. Replacing polystyrene foam with more recyclable materials is important for reducing ocean microplastic pollution from packaging waste.
Obtaining nanocomposites based on recycled polystyrene from urban solid waste with carbon nanostructures: graphene oxide and multi-wall carbon nanotubes, modified with organic acids
This paper is not about microplastic pollution; it describes the fabrication of nanocomposites from recycled polystyrene mixed with graphene oxide and carbon nanotubes to improve material thermal stability.
Cellulose Nanofibrils Dewatered with Poly(Lactic Acid) for Improved Bio-Polymer Nanocomposite Processing
This paper is not about environmental microplastics; it describes a manufacturing process for combining cellulose nanofibers with polylactic acid (a biodegradable bioplastic) to make stronger composite materials, with no relevance to plastic pollution or human health risk.
High-performance biodegradable poly(lactic acid) composites with xylan and lignin copolymer
Researchers developed high-performance biodegradable poly(lactic acid) composites by incorporating xylan and lignin derived from lignocellulosic biomass, improving PLA mechanical properties and addressing its brittleness limitations while maintaining biodegradability as a sustainable alternative to conventional plastics.
Lightweight Carbon Foam obtained from post-use Polyehylene Terephthalate bottles and potential applications
Researchers developed a lightweight carbon foam from post-consumer PET bottles through carbonization, demonstrating a viable way to upcycle plastic waste into a valuable material with potential applications in filtration and thermal insulation.
Cellulose-Reinforced Polylactic Acid Composites for Three-Dimensional Printing Using Polyethylene Glycol as an Additive: A Comprehensive Review
This comprehensive review examined how cellulose-reinforced polylactic acid composites with polyethylene glycol additives can be used for 3D printing as biodegradable alternatives to petroleum-based plastics. The research found that these bio-based materials show promise for reducing plastic waste, though challenges remain in matching the mechanical properties of conventional plastics.
Tuning pore size and density of rigid polylactic acid foams through thermally induced phase separation and optimization using response surface methodology
Researchers developed a method for making rigid, porous polylactic acid (PLA) foam — a biodegradable plastic — using a freeze-separation process, then used statistical modeling to optimize pore size and density. By fine-tuning factors like polymer concentration and temperature, they achieved specific foam structures useful for filtration, insulation, or biomedical applications.
Binary Green Blends of Poly(lactic acid) with Poly(butylene adipate-co-butylene terephthalate) and Poly(butylene succinate-co-butylene adipate) and Their Nanocomposites
Binary blends of polylactic acid with two biodegradable copolyesters (PBAT and PBSA) were formulated and their nanocomposites characterized, finding that adding a second biodegradable polymer substantially improved the toughness and elongation at break of PLA while maintaining biodegradability, offering a path toward more durable bioplastic materials.
Effect of Matrix Crystallization on Vickers Hardness of Cellulose Fiber / Poly(lactic acid) Composites
This study investigated how crystallization processes affect the hardness of composites made from cellulose nanofibers and polylactic acid, a biodegradable plastic, with implications for replacing conventional fossil-fuel-based plastics.
Characteristics of the steam degradation of poly(lactic acid) and poly(3-hydroxybutyrate-co-3-hydroxyhexanoate)
This study characterized the steam pyrolysis degradation products of poly(lactic acid) and poly(3-hydroxybutyrate-co-3-hydroxyvalerate) biodegradable plastics, evaluating recycling via thermal depolymerization as a way to recover carbon resources from biodegradable plastic waste. Results provided degradation kinetics and product yields relevant to developing industrial recycling pathways for these bioplastics.
Valorization of wood pulp to mechanically strong and biodegradable packaging foams by wet foaming process
Researchers developed biodegradable packaging foams from wood pulp and lignin using a wet foaming process, optimizing surfactant concentration and foaming time to achieve densities as low as 0.013 g/cm3 and porosities up to 99.2% as sustainable alternatives to expanded polystyrene.
Microstructure and performance evolution of poly (l-lactic acid) during physical aging: Determinable role of molding method on β-relaxation
Researchers investigated how the manufacturing method of poly(L-lactic acid) — a biodegradable plastic relevant to microplastic pollution reduction — affects its mechanical aging behavior, finding that quenching versus cold-pressing creates different molecular network structures that determine how quickly the material becomes brittle over time.
Carbon Capture Utilization for Bio-Based Building Insulation Foams
This study explored using carbon dioxide captured from the atmosphere to make bio-based insulation foams as a greener alternative to petroleum-based building materials. Replacing fossil-fuel-derived plastics with biodegradable alternatives could reduce the long-term accumulation of microplastic pollution.
Influence of surfactant type on the microstructure, mechanical and thermal properties of phenolic foams
This study examined how surfactant type affects the microstructure, mechanical, and thermal properties of phenolic foams, finding that nonionic Tween80 produced the lowest density foams while anionic SLS30 produced the highest density, with all surfactants creating open-cell morphology.
High Barrier Nanocomposite Film with Accelerated Biodegradation by Clay Swelling Induced Fragmentation
This study developed a polylactic acid (PLA) composite film reinforced with clay that improves the poor gas barrier properties of biodegradable plastics while also accelerating their breakdown through a clay-induced fragmentation mechanism. Creating biodegradable packaging that performs as well as conventional plastic while genuinely degrading in the environment is a key challenge for reducing plastic pollution.
Poly(ethylene succinate-co-lactic acid) as a Multifunctional Additive for Modulating the Miscibility, Crystallization, and Mechanical Properties of Poly(lactic acid)
Researchers synthesized a series of poly(ethylene succinate-co-lactic acid) copolymers with varying lactic acid content and evaluated them as compatibilizers to modulate the miscibility and mechanical performance of poly(lactic acid) blends. The copolymers acted as multifunctional additives that improved blend compatibility and allowed tuning of material properties.
Mechanical properties of fibre/ filler based poly(Lactic Acid) (Pla) composites : A brief review
This review examines the mechanical properties of polylactic acid (PLA)-based composites reinforced with natural fibers and fillers, presenting PLA as a biodegradable alternative to conventional plastics in applications ranging from agriculture to biomedical devices. Improving the strength and durability of bio-based plastics is essential for replacing petroleum-based materials that generate persistent microplastic pollution.
Crystallization behaviors of chain extended poly (lactic acid) modified with ST‐NAB3 and its improvement for mechanical and thermal properties
Researchers modified poly(lactic acid) — a biodegradable plastic alternative to petroleum-based polymers — to improve its poor crystallization, mechanical strength, and heat resistance by adding a chain extender and nucleating agent. The resulting material performs better under real-world conditions, bringing biodegradable plastics closer to viably replacing conventional plastics that contribute to microplastic pollution.
In Vitro Effects of Waterborne Polyurethane 3D Scaffolds Containing Poly(lactic-co-glycolic acid)s of Different Lactic Acid/Glycolic Acid Ratios on the Inflammatory Response
Researchers synthesized waterborne polyurethane 3D scaffolds containing poly(lactic-co-glycolic acid) at different ratios and evaluated their inflammatory response in vitro, finding that scaffold composition significantly influenced inflammation modulation for soft tissue repair.