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61,005 resultsShowing papers similar to Biodegradable Plastics: Biodegradation Percentage and Potential Microplastic Contamination in Seawater
ClearDegradation efficiency of biodegradable plastics in subtropical open-air and marine environments: Implications for plastic pollution
Researchers tested several types of biodegradable plastics in real outdoor and ocean environments in Hong Kong and found that most failed to break down significantly over the study period. This means biodegradable plastics marketed as eco-friendly alternatives can still fragment into microplastics that persist in the environment and potentially enter the food chain, posing similar risks to conventional plastics.
Biodegradability of bioplastics in different aquatic environments: A systematic review
This systematic review examines whether bioplastics actually break down in water as promised. The findings reveal wide variability in how well different bioplastics biodegrade in freshwater and saltwater, and current testing standards lack clear targets, meaning some materials marketed as biodegradable may still persist in the environment and contribute to microplastic pollution.
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.
Generation of Microplastics from Biodegradable Packaging Films Based on PLA, PBS and Their Blend in Freshwater and Seawater
Researchers studied how biodegradable plastic films made from PLA, PBS, and their blends break down in freshwater and seawater over several months. All films generated microplastic particles as they degraded, with different water environments producing different amounts and types of fragments. This study challenges the idea that biodegradable plastics are a clean solution, since they still create microplastics during breakdown in natural water systems.
Fate of So‐Called Biodegradable Polymers in Seawater and Freshwater
This review examined whether so-called biodegradable plastics actually break down in seawater and freshwater environments, finding that most degrade far too slowly to offer any practical environmental benefit. The study warns that biodegradable labeling can create a false sense of security and may not reduce plastic accumulation in aquatic ecosystems.
Bioplastics in the Sea: Rapid In-Vitro Evaluation of Degradability and Persistence at Natural Temperatures
Researchers evaluated the marine degradability of multiple bioplastic materials at natural seawater temperatures, finding that most bioplastics persist in ocean environments rather than degrading quickly, challenging assumptions that bioplastics represent a straightforward solution to marine plastic pollution.
Generation of biodegradable microplastics from commercially available PBAT and PLA-based plastic bags in water: Impacts of UVA and water medium
Researchers tested how commercially available biodegradable plastic bags made from PBAT and PLA degrade in water under UVA light and dark conditions over 12 weeks. They found that both materials degraded faster in pure water than seawater, and UVA light significantly accelerated breakdown, but neither fully decomposed. The study confirms that biodegradable plastics generate microplastic fragments during incomplete degradation in aquatic environments.
Evaluation of the degradation from micro to nanoplastics from biodegradable bags in marine conditions
Researchers evaluated how biodegradable plastic bags degrade from the micro to nano scale under environmental conditions, testing whether commercial biodegradable plastics fully decompose or generate persistent nanoplastic particles. Results showed biodegradable bags produced nanoplastic particles during degradation, challenging the assumption that biodegradable label guarantees complete environmental breakdown.
Evaluation of the degradation from micro to nanoplastics from biodegradable bags in marine conditions
Researchers evaluated how biodegradable plastic bags degrade into micro- and nanoplastics under environmental conditions, comparing them to conventional plastics. The study found that even biodegradable materials generate persistent micro- and nanoplastic particles under real-world conditions.
Potential environmental impacts of bioplastic degradation in natural marine environments: A comprehensive review
This review examines the environmental impacts of biodegradable plastics degrading in marine environments, finding that their microscale breakdown raises significant concerns about contributing to microplastic pollution rather than eliminating it. The authors conclude that biodegradable plastics require reevaluation as petroleum-based plastic substitutes given the incomplete understanding of their behavior at the microscale in marine ecosystems.
Disintegration of commercial biodegradable plastic products under simulated industrial composting conditions
Researchers tested ten commercial biodegradable plastic products under simulated industrial composting conditions to see how well they actually break down. While some products disintegrated significantly, others showed incomplete breakdown, and the process generated microplastic fragments during degradation. This raises questions about whether biodegradable plastics truly solve the plastic pollution problem or simply create smaller plastic particles.
Decomposition and fragmentation of conventional and biobased plastic wastes in simulated and real aquatic systems
Researchers tracked the decomposition and fragmentation of conventional and biobased plastics in simulated and real aquatic environments over six months. They found that while biobased materials showed faster initial surface changes, all tested plastics eventually generated micro- and nanoplastic fragments in water. The study provides evidence that even plastics marketed as more environmentally friendly still contribute to microplastic pollution once they enter waterways.
Biodegradable plastics in the air and soil environment: Low degradation rate and high microplastics formation
Researchers compared the degradation rates of various biodegradable plastic types in natural air and soil environments over time, finding that most degraded slowly under ambient conditions and generated substantial microplastic fragments, with non-certified biodegradable plastics showing essentially no degradation.
Biodegradability standards for carrier bags and plastic films in aquatic environments: a critical review
Researchers critically reviewed existing biodegradability standards for carrier bags and plastic films in aquatic environments and found that current testing protocols do not adequately reflect real-world marine or freshwater conditions. The study suggests that labeling plastics as "biodegradable" may be misleading, since degradation rates vary dramatically depending on temperature, oxygen levels, and microbial communities present in natural water bodies.
Solution or Pollution? A paradigm shifts in understanding the fate and threats of biodegradable plastics in the marine environment
This review challenges the assumption that biodegradable plastics are inherently eco-friendly by examining their degradation behavior in marine environments. Researchers found that biodegradable plastics often require specific conditions to break down and can themselves become sources of microplastic pollution when those conditions are not met. The study highlights a significant research gap in understanding the fate of biodegradable nano- and pico-plastics in marine ecosystems.
Biodegradable plastics in aquatic ecosystems: latest findings, research gaps, and recommendations
This review challenges the assumption that biodegradable plastics are harmless to aquatic ecosystems, finding that many materials labeled as biodegradable do not fully break down in natural water environments. Researchers found that these plastics can persist in aquatic settings and pose similar risks to wildlife as conventional plastics, including ingestion and chemical leaching. The study recommends more rigorous testing of biodegradability claims under real-world aquatic conditions.
Biodegradable plastics in the marine environment: a potential source of risk?
This review examines whether biodegradable plastics offer a genuine solution to marine plastic pollution, finding that their environmental behavior depends heavily on specific conditions and that they may still pose risks in marine environments where decomposition is slow.
Degradation of Plastics in Seawater in Laboratory
Researchers tested how compostable and oxodegradable plastics degrade in seawater in laboratory conditions, finding that compostable plastic showed measurable breakdown (10%) while polyolefins with or without pro-oxidant additives showed very little degradation. The results suggest that many plastics marketed as degradable offer minimal benefit in marine environments.
A review of biodegradation and formation of biodegradable microplastics in soil and freshwater environments
Researchers reviewed how biodegradable plastics break down in soil and freshwater, finding that incomplete degradation by microorganisms can still produce tiny biodegradable microplastic particles that persist in the environment — meaning "biodegradable" doesn't always mean safe or fast-disappearing.
Biodegradable plastics: Green hope or greenwashing?
This review examines biodegradable plastics and their limitations, finding that many do not break down effectively under real-world environmental conditions and may still fragment into microplastics. The authors caution that biodegradable plastics should not be viewed as a simple solution to plastic pollution without better standards and end-of-life infrastructure.
Compounding one problem with another? A look at biodegradable microplastics
This review examines whether biodegradable plastics truly solve the microplastic problem, finding that many do not fully break down under real-world conditions. Incomplete decomposition of biodegradable plastics can generate micro-sized particles that may be just as harmful as conventional microplastics. The authors warn that marketing plastics as "biodegradable" without ensuring complete breakdown could actually worsen environmental microplastic contamination.
Millions of microplastics released from a biodegradable polymer during biodegradation/enzymatic hydrolysis
Researchers found that enzymatic biodegradation of a biodegradable plastic released millions of microplastic particles from just 0.1 grams of material, demonstrating that biodegradable plastics still pose a significant microplastic pollution risk during breakdown.
A progress update on the biological effects of biodegradable microplastics on soil and ocean environment: A perfect substitute or new threat?
This review examines whether biodegradable plastics, often marketed as eco-friendly alternatives, actually break down safely in the environment. The evidence shows that biodegradable plastics often fragment into microplastics rather than fully decomposing, and these biodegradable microplastics can harm soil organisms, marine life, and disrupt nutrient cycles. The findings suggest that simply switching to biodegradable plastics may not solve the microplastic pollution problem and could introduce new environmental risks.
Half-life of biodegradable plastics in the marine environment depends on material, habitat, and climate zone
This study compared the biodegradation rates of three types of biodegradable plastics (PHA, PBSe, PBSeT) versus conventional polyethylene under realistic marine conditions. Results showed that PHA degraded rapidly at sea while the others performed poorly, highlighting that not all "biodegradable" plastics actually break down quickly in marine environments.