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61,005 resultsShowing papers similar to Biodegradation of Polymers: Stages, Measurement, Standards and Prospects
ClearReview on the Biological Degradation of Polymers in Various Environments
This review provides an overview of how biodegradable plastics degrade under different environmental conditions including soil, freshwater, marine, and composting environments. It finds that biodegradability is a material property strongly dependent on environmental conditions, and that many so-called biodegradable plastics degrade far more slowly in nature than in controlled test conditions.
Polymer Biodegradability 2.0: A Holistic View on Polymer Biodegradation in Natural and Engineered Environments
Researchers reviewed the science of biodegradable plastics, examining how material properties and environmental conditions — such as temperature, moisture, and microbial activity — determine how quickly and completely a polymer breaks down. The chapter provides guidance for developing, testing, and regulating biodegradable alternatives to conventional plastics that persist in the environment.
Challenges with Verifying Microbial Degradation of Polyethylene
This critical review examines published claims of microbial polyethylene degradation, finding that while surface colonization and minor chemical changes have been demonstrated, complete biodegradation of polyethylene under ambient conditions remains unproven and methodological rigor is often lacking.
Bridging Three Gaps in Biodegradable Plastics: Misconceptions and Truths About Biodegradation
This review addresses common misconceptions about biodegradable plastics, clarifying that degradation depends heavily on specific environmental conditions and that most biodegradable plastics do not fully break down in typical marine or soil environments.
Advances in environmental degradation and impact of degradable plastics
This review clarifies definitions and classifications of degradable plastics and summarizes their degradation characteristics in water, soil, aerobic composting, and anaerobic digestion environments, finding that degradability remains conditional and dependent on specific polymer type, temperature, and duration. The authors also assess the potential environmental and biological impacts of microplastic fragments and additive byproducts released during 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.
Biodegradable Plastics: Standards, Policies, and Impacts
This review evaluates the promise and limitations of biodegradable plastics as a solution to plastic pollution. Researchers found that while biodegradable plastics can help reduce environmental persistence, many only break down under specific industrial composting conditions and do not readily degrade in natural environments like oceans or landfills, highlighting the need for clearer standards and consumer education.
Methodologies to Assess the Biodegradability of Bio-Based Polymers—Current Knowledge and Existing Gaps
This review assessed existing methodologies for testing the biodegradability of bio-based polymers, identifying gaps in current standards and emphasizing the need for updated legislation and testing guidelines to ensure bioplastics fully degrade without releasing hazardous compounds.
Exploring biopolymer degradation: Environmental effects and future insights
This review examines how biopolymers degrade in the environment and evaluates their potential as sustainable alternatives to conventional plastics. While biopolymers offer environmental benefits like reduced pollution, the study notes challenges including slower-than-expected degradation in natural settings, potential microplastic generation, and the need for better standardized testing and supportive policies.
Biodegradability of Plastics: Challenges and Misconceptions
This review addresses widespread misconceptions about plastic biodegradability, explaining why most plastics persist in the environment for decades to centuries despite industry marketing claims. It clarifies the distinction between degradable, biodegradable, and compostable plastics and explains why real-world conditions rarely support plastic breakdown.
Laboratory Test Methods to Determine the Degradation of Plastics in Marine Environmental Conditions
This paper reviewed laboratory test methods for determining how plastics degrade in marine environments, evaluating the relevance of existing tests for predicting real-world biodegradation rates and calling for more standardized and environmentally realistic protocols.
Are biodegradable plastics an environmental rip off?
Researchers critically analyzed current technical standards used to certify plastic biodegradability and found that test conditions fail to reflect real-world aquatic and deep-sea environments where most plastic ends up, arguing that existing certifications may be misleading and that standards must be urgently revised to include deep-sea conditions, microplastic formation, and ecotoxicological endpoints.
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.
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.
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.
Biodegradable Polymers: Present Opportunities and Challenges in Providing a Microplastic‐Free Environment
This viewpoint examines whether biodegradable polymers can solve the microplastic pollution problem, concluding that while they show promise, their biodegradability in real-world natural environments (versus industrial composting conditions) is often uncertain. The authors call for intensive research into truly environmentally degradable materials and smart degradation mechanisms.
Aging of plastics and microplastics in the environment: a review on influencing factors, quantification methods, challenges, and future perspectives
This review examined how plastics and microplastics age and degrade in the environment through physical, chemical, and biological processes. Researchers found that while various analytical techniques exist to measure degradation, there is no widely accepted standard method for comparing how different environmental conditions affect microplastic breakdown rates. The study highlights the need for better tools to predict how long microplastics will persist in different environments, which is essential for understanding their long-term ecological impact.
Microbial abilities to degrade global environmental plastic polymer waste are overstated
This critical review examines claims of microbial plastic degradation in the scientific literature, arguing that many announcements of novel plastic-degrading microorganisms overstate the extent and rate of actual polymer breakdown. The authors call for standardized verification methods to distinguish genuine biodegradation from superficial surface weathering in studies of plastic-degrading microbes.
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.
Biodegradable Polyesters in Soil - Real Environmental Hazard or Just a Storm in a Teacup?
This review critically examines whether biodegradable polyesters genuinely degrade in soil environments, finding that under field conditions many degrade slowly and incompletely, forming persistent microplastic particles ('microbioplastics') with largely unknown ecological consequences.
Comparison of the aerobic biodegradation of biopolymers and the corresponding bioplastics: A review
Researchers compared how quickly biodegradable bioplastics break down in soil versus their natural parent materials — like starch, cellulose, and lignin — finding that chemical modifications made during manufacturing significantly change which microbes and enzymes are needed for degradation. The review concludes that lab-based biodegradation studies often miss real-world complexity, and long-term field experiments are urgently needed to validate biodegradability claims for bioplastics.
Acceleration of Biodegradation Using Polymer Blends and Composites
This review examines how blending biodegradable polymers with other materials can tune both physical properties and biodegradation rates, noting that many biodegradable plastics degrade far more slowly than claimed. The authors stress that biodegradation claims require rigorous validation under realistic environmental conditions.
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.