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61,005 resultsShowing papers similar to Characterising fragmentation of compostable bioplastic: releasing microplastics or small bioplastic debris
ClearComposting of starch-based bioplastic bags: small scale test of degradation and size reduction trend
Small-scale composting experiments showed that starch-based bioplastic bags degraded physically and chemically over time, but the pace and completeness depended on conditions. The study addresses concerns that bioplastic bags used in food waste collection may not fully break down in composting facilities, potentially leaving plastic residue in compost.
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.
Appraising co-composting efficiency of biodegradable plastic bags and food wastes: Assessment microplastics morphology, greenhouse gas emissions, and changes in microbial community
Researchers tested composting biodegradable plastic bags with food waste and found that while the bags broke down faster than regular plastic, the process still produced microplastic fragments and affected greenhouse gas emissions. The type of additives in the biodegradable bags influenced both the composting process and the microbial communities involved. This study raises important questions about whether "biodegradable" plastics truly solve the microplastic problem or simply create smaller plastic particles during decomposition.
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.
Fragmentation and Mineralization of a Compostable Aromatic–Aliphatic Polyester during Industrial Composting
Researchers tracked the fragmentation and biodegradation of a compostable aromatic-aliphatic polyester spiked into compost under industrial composting conditions, finding that while disintegration occurred as expected, microplastic-sized fragments with incomplete mineralization raised concerns about residual polymer persistence.
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.
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.
Field studies on the deterioration of microplastic films from ultra-thin compostable bags in soil
Researchers found that ultra-thin compostable plastic bag films used for food waste collection degrade poorly in agricultural soil, with industrial compost containing undeteriorated fragments that persist after field application and raise concerns about compostable plastics as a source of soil microplastic contamination.
Municipal biowaste treatment plants contribute to the contamination of the environment with residues of biodegradable plastics with putative higher persistence potential
Researchers found significant amounts of biodegradable plastic fragments — including particles smaller than 500 micrometers — surviving the composting and anaerobic digestion process at municipal biowaste facilities, ending up in finished compost and liquid fertilizer. The recovered fragments showed altered material properties that may make them even harder to break down further, raising questions about whether current biodegradable plastics are truly safe for agricultural use.
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.
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.
Decomposition of biodegradable plastic bags for kitchen waste collection in industrial composting
Biodegradable plastic bags marketed as compostable may not fully break down under real industrial composting conditions. This study found that starch-based bags decomposed well within 6 weeks, but PLA-based bags fell short of the 90% decomposition threshold, and particles smaller than 1 mm were present but not fully tracked — raising concerns that these "green" alternatives may still contribute to microplastic contamination in compost used on farmland.
Persistence in soil of microplastic films from ultra-thin compostable plastic bags and implications on soil Aspergillus flavus population
Researchers investigated whether ultra-thin compostable plastic bags fragment into persistent microplastic particles in soil under laboratory conditions, finding that compostable film microplastics did form and persisted in soil rather than fully breaking down. The study raises concerns about whether replacing conventional plastics with compostable alternatives actually reduces microplastic accumulation in soil.
Bioplastics: Missing link in the era of Microplastics
Researchers examined whether bioplastics, often promoted as eco-friendly alternatives to conventional plastics, also break down into microplastics. They found that polyhydroxyalkanoate bioplastic films formed microplastic particles in water environments similar to conventional plastics. The study highlights that biodegradable plastics may not solve the microplastic problem and calls for more research into how quickly bioplastics actually degrade and what effects their microplastic fragments have on ecosystems.
Aging of biodegradable blended plastic generates microplastics and attached bacterial communities in air and aqueous environments
Researchers aged biodegradable plastic blends in both air and water, finding that fragmentation into microplastics was inevitable before complete degradation, and that the resulting particles attracted distinct bacterial communities compared to conventional plastics. The study raises concerns that biodegradable plastics may still pose environmental risks during the microplastic phase of their breakdown.
Short-term fragmentation of single-use plastic carrier bags in natural environment
This study monitored the short-term fragmentation of single-use plastic bags — including conventional polyethylene, cassava bioplastic, oxo-biodegradable, and compostable plastics — when left in natural outdoor environments. Results showed that even so-called biodegradable alternatives did not break down reliably in real-world conditions, potentially generating microplastics rather than fully degrading.
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.
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.
The degradation of single-use plastics and commercially viable bioplastics in the environment: A review
Researchers reviewed how conventional single-use plastics degrade over decades in natural environments versus how bioplastics biodegrade, finding that while alternatives like PBS and PHA show genuine biodegradation potential, most require specific industrial composting conditions that are rarely available in practice.
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.
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.
Analysis of the Possibility of Environmental Pollution by Composted Biodegradable and Oxo-Biodegradable Plastics
Laboratory composting experiments examined whether biodegradable and oxo-biodegradable plastics fully break down during composting or leave residual plastic fragments that could contaminate compost products. The results found that both types left plastic residues, raising concerns that labeling materials as "biodegradable" does not guarantee they are safe for soil applications.
Influence of plastic shape on interim fragmentation of compostable materials during composting
Researchers studied how the physical shape of biodegradable plastics affects the amount of microplastic fragments produced during composting, finding that thin films shed the most interim fragments while plastic-coated paper cups shed fewer — suggesting current lab tests using plastic granules may not accurately reflect how real consumer products break down.
Exploring the hidden environmental pollution of microplastics derived from bioplastics: A review
This review examines the often-overlooked problem that even bioplastics, marketed as eco-friendly alternatives, can break down into micro- and nanoplastics in the environment. Research since 2012 has identified multiple degradation pathways, including UV exposure, mechanical wear, and biodegradation, that fragment bioplastics into tiny particles. The toxicity of these bioplastic-derived microparticles is still poorly understood, highlighting a hidden source of plastic pollution.