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61,005 resultsShowing papers similar to Sliding elements made from biodegradable plastic – friction and wear of poly(lactic acid) compared to polyamide 6
ClearDo poly(lactic acid) microplastics instigate a threat? A perception for their dynamic towards environmental pollution and toxicity
This review examines whether poly(lactic acid), a popular biodegradable plastic marketed as an eco-friendly alternative, actually poses environmental risks as it breaks down into microplastics. Researchers found that PLA only degrades fully under specific industrial composting conditions with high temperatures and moisture, and may persist much longer in natural environments. The study calls for deeper investigation into the environmental fate and potential toxicity of PLA microplastics as their use continues to grow.
Microbial Degradation of Polylactic Acid Bioplastic
This review covers how microorganisms degrade polylactic acid (PLA) bioplastic under different environmental conditions. Understanding PLA biodegradation is important for assessing whether PLA products actually break down as intended in real-world environments rather than persisting as microplastics.
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.
State of the art on biodegradability of bio-based plastics containing polylactic acid
This review examines whether bio-based plastics made from polylactic acid (PLA) actually break down in the environment as intended. While certain microorganisms can degrade PLA, the process is slow and depends heavily on conditions like temperature and moisture. The findings matter because if bio-based plastics do not fully break down, they can still fragment into microplastics, posing many of the same environmental and health risks as conventional plastics.
Properties and Degradation Performances of Biodegradable Poly(lactic acid)/Poly(3-hydroxybutyrate) Blends and Keratin Composites
Researchers tested biodegradable blends of polylactic acid and polyhydroxybutyrate with added keratin waste as fillers, assessing how well the composites degrade. The work contributes to developing plastic alternatives that break down in the environment rather than persisting as microplastics.
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.
Polylactic acid synthesis, biodegradability, conversion to microplastics and toxicity: a review
Researchers reviewed polylactic acid (PLA), a popular plant-based "biodegradable" plastic used in packaging and agriculture, finding that while it breaks down inside the body, it does not fully degrade under natural outdoor or aquatic conditions — and in fact fragments into microplastics faster than conventional petroleum-based plastics. This challenges the assumption that bioplastics are a straightforward environmental solution.
Bioplastics and biodegradable plastics: A review of recent advances, feasibility and cleaner production
Researchers systematically reviewed over 280 articles on bioplastics and biodegradable plastics, finding that while polylactic acid and polyhydroxyalkanoates reduce fossil fuel dependence, their higher production costs, lower durability, and tendency to form microplastics when improperly composted remain significant barriers to replacing conventional plastics.
The fate of biodegradable polyesters in the marine environment
Researchers tracked the degradation of five biodegradable plastics in simulated marine environments over nearly a year, including materials like polylactic acid and polyhydroxybutyrate. While all materials showed signs of degradation such as surface cracking and weight loss from hydrolysis, they also released polymer fragments into surrounding sand, indicating that even biodegradable plastics can generate microplastic pollution. The findings suggest that labeling a plastic as biodegradable does not guarantee it will fully break down in ocean conditions.
Poly(lactic acid) nanoplastics through laser ablation: establishing a reference model for mimicking biobased nanoplastics in aquatic environments
PLA (polylactic acid) nanoplastics were fabricated via laser ablation to create a reference model for studying biobased nanoplastics in aquatic environments, with the resulting particles sharing surface chemistry characteristics with environmentally degraded PLA debris.
Bioplastics: Environment-friendly materials and their production technologies
This review analyzes recent developments in bioplastics as an environmentally friendly alternative to conventional plastics, examining raw material sources, production technologies, and biodegradation assessment methods, with special emphasis on polylactic acid (PLA) as the most widely used biodegradable polymer.
Balancing Degradability and Physical Properties of Amorphous Poly(d,l‐lactide) by Making Blends
Researchers developed biodegradable polyester film blends combining two forms of polylactide to balance degradability with physical performance. The blended films degraded faster than conventional plastics while maintaining usable properties for packaging applications. Truly degradable plastics that break down quickly without leaving persistent microplastics are important for reducing long-term environmental contamination.
Bioabsorbable Characteristics of Poly (Lactic Acid) (PLA) for a Fundamental Solution to the Problem of Microplastics Tea Bag SOILON® Made from PLA Fibers
This review examines the biodegradation characteristics of polylactic acid (PLA) materials, discussing the enzymatic and environmental conditions needed for effective breakdown and evaluating PLA's potential as a genuinely biodegradable alternative to conventional petroleum-based plastics.
Biocomposites and Poly(lactic acid) in Active Packaging: A Review of Current Research and Future Directions
This review examines how bio-based and biodegradable materials, especially polylactic acid (PLA), are being developed as sustainable alternatives for food packaging. While these materials aim to reduce petroleum-based plastic pollution, the review notes that biodegradable plastics can still break down into microplastics during their degradation process. Understanding the full lifecycle of these alternative materials is important for determining whether they truly reduce microplastic contamination.
Not Only Diamonds Are Forever: Degradation of Plastic Films in a Simulated Marine Environment
Researchers found that biodegradable plastics, including polylactic acid (PLA), do not fully degrade in simulated marine environments at realistic temperatures and conditions. This challenges the assumption that biodegradable plastics are a straightforward solution to ocean plastic pollution.
Monitoring polymer degradation under different conditions in the marine environment
Researchers simulated four marine environmental conditions over one year and found that biobased plastics like polylactic acid degrade up to five times faster in seafloor sediment than in the water column, while conventional plastics showed little degradation difference across conditions.
Plastic Alternatives: Biodegradable Solutions and Their Real-World Impact
This review examines biodegradable alternatives to conventional plastics, evaluating biopolymers such as polylactic acid, polyhydroxyalkanoates, and starch-based composites for their practical performance, cost-efficiency, and real-world environmental impact as substitutes for petroleum-based plastic packaging.
The Hydrolytic Behavior of Poly(Lactic Acid)/Polystyrene‐ Grafted‐Hectorite Nanocomposite Films and Its Regulatory Mechanism on Microplastics
Researchers tested how polylactic acid (PLA) films and PLA/hectorite nanocomposite films degrade in aqueous solutions of different pH levels. The nanocomposite films degraded more slowly and released fewer microplastic fragments than pure PLA, suggesting that clay mineral incorporation could reduce secondary microplastic generation from biodegradable plastics.
Degradation of Polylactic Acid/Polypropylene Carbonate Films in Soil and Phosphate Buffer and Their Potential Usefulness in Agriculture and Agrochemistry
Researchers studied how blends of polylactic acid and polypropylene carbonate, two biodegradable plastics being promoted as eco-friendly alternatives, break down in soil and in laboratory conditions over time. The degradation was slow and incomplete, with the films losing weight and molecular structure gradually over 24 months. This raises concerns that even biodegradable plastics may persist in the environment long enough to fragment into microplastics before fully breaking down.
The Possibility of Using Polylactic Acid and Polyhydroxyalkanoates to Replace the Normal Plastics in Life
This review examines the potential of polylactic acid and polyhydroxyalkanoates as biodegradable replacements for conventional plastics such as polypropylene and polyethylene, evaluating their properties and discussing their capacity to reduce microplastic pollution in major river systems.
Synthesize and Applications of Biodegradable Plastics as a Solution for Environmental Pollution Due to Non-Biodegradable Plastics, a Review
This review examines biodegradable plastics as alternatives to conventional petroleum-based plastics, covering materials like polylactic acid, polyhydroxyalkanoates, and polycaprolactone. Researchers detail how these polymers are synthesized from renewable resources and can be modified for various applications. The study highlights both the promise and remaining challenges of biodegradable plastics in reducing environmental pollution from non-degradable plastic waste and microplastic formation.
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.
Behind the Green Promise: Eco-Innovation or Commercial Illusion?
This review critically examines the gap between the environmental promise of biodegradable packaging materials such as polylactic acid and polybutylene succinate and their real-world degradation performance. The authors found that most biodegradable plastics require specific industrial composting conditions to degrade as marketed and may perform no better than conventional plastics when disposed of in landfill, soil, or marine environments.
Can Polylactic Acid (PLA) Act as an Important Vector for Triclosan?
This study tested whether polylactic acid acts as a carrier for the antimicrobial compound triclosan, comparing PLA with polystyrene, PVC, and polyethylene of different particle sizes. PLA showed lower triclosan adsorption than non-biodegradable polymers, but its carrier capacity increased under acidic conditions, with implications for how biodegradable microplastics transport chemical contaminants.