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61,005 resultsShowing papers similar to Evaluation of the degradation from micro to nanoplastics from biodegradable bags in marine conditions
ClearEvaluation 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.
The effect of biodegradable plastics on microplastic accumulation and exposure
Researchers developed a comprehensive method to quantify microplastic accumulation from biodegradable polymers in natural environments, examining whether biodegradable alternatives actually reduce plastic loads compared to conventional polymers under real-world outdoor 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.
Degradation 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.
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.
Analysis of the Mechanical Degradability of Biodegradable Polymer-Based Bags in Different Environments
Researchers analyzed the mechanical degradability of biodegradable polymer-based bags under simulated environmental conditions, measuring fragmentation rates and the physical characteristics of resulting particles. The bags fragmented into microplastic-sized pieces under mechanical stress comparable to environmental conditions, raising concerns that biodegradable bags may contribute to environmental microplastic loads during incomplete degradation.
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.
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 Microplastics: Environmental Fate and Persistence in Comparison to Micro- and Nanoplastics from Traditional, Non-Degradable Polymers
This review compares biodegradable microplastics with traditional microplastics and finds that while biodegradable versions break down much faster, they still release microplastic-sized particles that can persist in the environment for varying periods. How quickly biodegradable microplastics actually disappear depends heavily on environmental conditions like temperature, moisture, and microbial activity, and lab results often overestimate real-world degradation. The takeaway is that switching to biodegradable plastics helps but does not fully solve the microplastic pollution problem.
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.
Analysis of the microplastic emission potential of a starch-based biodegradable plastic material
Researchers developed a method to assess the microplastic emission potential of biodegradable starch-based plastics under environmental conditions, finding that even materials labeled biodegradable can fragment into persistent microplastic particles depending on environmental degradation pathways.
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.
Degradation of bio-based and biodegradable plastics in a salt marsh habitat: Another potential source of microplastics in coastal waters
All types of plastic tested in a salt marsh environment, including supposedly biodegradable alternatives, produced microplastic particles within four weeks. Conventional plastics and compostable bags generated the most microplastics over the full 32-week study, raising questions about whether biodegradable plastics are truly safer for coastal environments.
Microplastics Generation: Onset of Fragmentation of Polyethylene Films in Marine Environment Mesocosms
Researchers investigated how high-density polyethylene films from plastic bags fragment into microplastics under simulated beach and nearshore conditions over six months. The study found that natural sunlight exposure on sand or in seawater caused measurable degradation, providing evidence for how everyday plastic bags break down into microplastic particles in marine environments.
A review on fate and ecotoxicity of biodegradable microplastics in aquatic system: Are biodegradable plastics truly safe for the environment?
This review examines whether biodegradable plastics are truly safe for aquatic environments, finding that they can break down into microplastics faster than conventional plastics and cause comparable or even greater harm to algae, invertebrates, and fish. The findings suggest that switching to biodegradable plastics alone will not solve the microplastic pollution problem, and these particles can still enter the human food chain through contaminated seafood.
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.
Degradation of Biodegradable Single-use Plates and Waste Bags in Terrestrial and Marine Environments
Field experiments found that biodegradable single-use plates and waste bags degraded at very different rates depending on material and environment, with some lasting far longer than expected. Products labeled as biodegradable may still persist and fragment into microplastics in natural marine and terrestrial conditions.
Can biodegradable polymers make microplastics?
Researchers investigated whether biodegradable polymers can form microplastics during their intended use and degradation, finding that several biodegradable materials do indeed fragment into micro- and nanoscale particles before fully mineralizing. The study raises important questions about whether "biodegradable" plastics fully solve the microplastic problem.
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.
Biodegradable Plastics: Biodegradation Percentage and Potential Microplastic Contamination in Seawater
This study tested the biodegradation of several commercially available biodegradable plastics in seawater, finding that most broke down incompletely and could still generate microplastic fragments. The findings challenge marketing claims about biodegradable plastics and highlight the risk that these materials pose as microplastic sources in marine environments.
Biofilm and Diatom Succession on Polyethylene (PE) and Biodegradable Plastic Bags in Two Marine Habitats: Early Signs of Degradation in the Pelagic and Benthic Zone?
Researchers studied biofilm and diatom colonization on polyethylene and biodegradable plastic bags over time, finding that both plastic types develop distinct microbial communities and that biodegradable plastics did not degrade noticeably faster under marine conditions.
Sustainable struggling: decoding microplastic released from bioplastics—a critical review
This critical review examines biodegradable plastics as an alternative to conventional plastics, finding that many do not fully degrade under real-world conditions and can fragment into microplastics more rapidly than their conventional counterparts.
Degradation of supposedly biodegradable polymers in a real estuarine environment
Researchers tested the real-world degradation of supposedly biodegradable polymer bags in an estuarine environment over 180 days. The study found that bags made of PLA combined with PBAT and starch showed the most consistent degradation, while polyethylene bags with oxo-biodegradable additives and plain polyethylene showed minimal breakdown, questioning the effectiveness of some biodegradable alternatives in natural settings.
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.