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61,005 resultsShowing papers similar to UV and thermal degradation of tire derivatives: A comparative study of unused tires, recycled tire chips, and tire and road wear particles
ClearAssessing the Biodegradability of Tire Tread Particles and Influencing Factors
Researchers tested the biodegradability of tire tread particles under natural and UV-weathered conditions, finding that biodegradation was limited and that UV weathering affected the process. Tire wear particles persist in the environment and contribute to microplastic, chemical, and particulate matter pollution.
Degradation rates and ageing effects of UV on tyre and road wear particles
Researchers studied how UV light degrades tire and road wear particles, which are considered the largest source of microplastics in the environment. They found that UV exposure caused significant surface cracking and chemical changes in the rubber particles, accelerating their breakdown into smaller fragments. The study provides important data on how quickly these particles degrade outdoors, which helps predict their long-term environmental fate and accumulation.
A study on the aquatic degradation of tire wear particles: Impact of environmental factors and material formulations
This study investigated how tire wear particles degrade in aquatic environments, examining the effects of environmental factors such as UV exposure and water chemistry on particle breakdown. The results showed that aquatic degradation alters tire wear particles in ways that may increase their ecotoxicological risk.
[Aging and Small-sized Particles Release Characteristics of Tire Microplastics in Various Environmental Media].
Researchers simulated the aging of tire microplastics from cars and electric bicycles under UV illumination in both dry and aquatic environments, finding that 30 days of UV exposure caused surface roughening, cracking, and flaking while increasing the carbonyl index and releasing smaller particles, revealing distinct aging and fragmentation behaviors across environmental media.
A critical review of tire wear particles aging and ecotoxicological consequences in terrestrial environments: Insights into environmentally persistent free radicals
This review synthesizes evidence on how tire wear particles age in terrestrial environments and the resulting ecological consequences. Researchers found that UV-induced aging generates environmentally persistent free radicals and reactive oxygen species that amplify soil toxicity, while biodegradation may reduce some risks. The study highlights that characterizing aged tire wear particles remains difficult due to their compositional complexity and calls for standardized analytical methods.
A study on the aquatic degradation of tire wear particles: Impact of environmental factors and material formulations
This study assessed how tire wear particles degrade in freshwater environments under varying environmental conditions including UV radiation and water chemistry. The degradation process alters particle properties in ways that may increase toxicity to aquatic organisms.
Chemical Leaching from Tire Wear Particles with Various Treadwear Ratings
Researchers investigated how tire treadwear ratings affect chemical leaching from tire wear particles, finding that benzothiazole compounds leached at different rates depending on tire type, with an additional derivative (2-mercaptobenzothiazole) detected by high-resolution mass spectrometry. The findings suggest that using benzothiazole alone as a quantification marker for tire wear particles can lead to inaccurate estimates of environmental contamination.
In Vitro Assessment Reveals the Effects of Environmentally Persistent Free Radicals on the Toxicity of Photoaged Tire Wear Particles
Researchers examined how tire wear particles change when exposed to sunlight and found that the aging process generates environmentally persistent free radicals on their surfaces. These radicals significantly increased the toxicity of the particles in laboratory cell tests, causing oxidative stress and DNA damage. The study suggests that weathered tire particles may be more harmful than freshly released ones, adding a new dimension to microplastic pollution concerns.
Experimental and computational hazard prediction associated with reuse of recycled car tire material
Researchers found that recycled car tire microparticles leach hazardous chemicals — including phthalates, benzene, and benzothiazole — into water, with leaching rates influenced by pH, temperature, particle size, and incubation time, raising environmental concerns about using tire waste in civil engineering applications.
Effect of UV exposure and natural aging on the in vitro PAHs bioaccessibility associated with tire wear particles in soil
Researchers examined how UV exposure and natural aging change the ability of tire wear particles to release polycyclic aromatic hydrocarbons in soil. They found that UV aging increased the surface reactivity of the particles and altered how readily these toxic compounds could be absorbed by living organisms. The study suggests that weathered tire particles in roadside soils may pose greater health risks than fresh ones.
Behavior of compounds leached from tire tread particles under simulated sunlight exposure
This study examined what happens to chemicals that leach from tire tread particles when exposed to sunlight. While sunlight broke down about a third of the leached compounds, it also created new transformation products, some of which may be more harmful than the originals. Since tire particles are a major source of microplastics in waterways, understanding how their chemicals change in sunlight is important for assessing real-world health risks.
Degradation rates and ageing effects of UV on tyre and road wear particles
Researchers examined how UV exposure degrades tyre and road wear particles (TRWPs) using accelerated ageing experiments, finding that UV irradiation alters particle physicochemical properties in ways relevant to understanding their long-term environmental fate.
Advanced understanding of the natural forces accelerating aging and release of black microplastics (tire wear particles) based on mechanism and toxicity analysis
Tire wear particles, a major but often overlooked source of microplastics in water, release heavy metals (especially zinc) and toxic organic chemicals as they age under sunlight and heat. The aging process increases the toxicity of these released substances to cells, raising concerns about long-term health effects from this widespread form of microplastic pollution.
Quantification of tire tread wear particles in microparticles produced on the road using oleamide as a novel marker
A novel analytical method using oleamide, a compound incorporated into tire rubber for processing purposes, as a chemical marker was developed and validated to quantify tire tread wear particles in road microparticle samples, offering improved specificity over existing benzothiazole-based approaches for source attribution of tire-derived microplastics.
Tire wear particles in different water environments: occurrence, behavior, and biological effects—a review and perspectives
This review examines tire wear particles, a major but often overlooked source of microplastics in water environments. Tire particles release toxic chemicals as they break down in water and can harm aquatic organisms, but most research has focused only on the chemical leachate rather than the particles themselves. Since tire wear contributes a large share of total microplastic pollution, understanding its full impact on water ecosystems and the food chain is important for human health.
Real-Time Pyrolysis Dynamics of Thermally Aged Tire Microplastics by TGA-FTIR-GC/MS
Researchers used a combined thermal analysis and spectroscopy technique (TGA-FTIR-GC/MS) to characterise in real time how tire wear particles — a major but often overlooked type of microplastic — break down when heated, releasing a range of potentially toxic organic compounds. Understanding the pyrolysis chemistry of aged tire microplastics is important for assessing the contamination risks they pose to aquatic and terrestrial environments as they degrade.
Environmental occurrence, fate, impact, and potential solution of tire microplastics: Similarities and differences with tire wear particles
This review examines tire microplastics, one of the most abundant types of microplastics in the environment, which come from tire wear on roads, recycled tire rubber, and tire repair dust. These particles carry a complex mix of chemicals including heavy metals and organic pollutants that can harm aquatic and soil organisms. Since tire microplastics end up in waterways and soil near roads, they represent a significant but often overlooked source of human microplastic exposure.
Effect of vacuum UV and UV-C treatment on degradation and ecotoxicity of tire wear microrubber leachates
Researchers tested UV light treatments on leachates from tire wear particles and found that a combined vacuum UV and UV-C approach effectively broke down toxic compounds including certain PAHs and chemical additives by up to 90%. The treatment also reduced the potential ecological toxicity and genotoxicity of the leachates, suggesting UV technology could help mitigate the environmental impact of tire-derived pollution.
Time-dependent toxicity of tire particles on soil nematodes
Tire wear particles—a major source of microplastics—were found to become increasingly toxic to soil nematodes over time as chemical additives leach out. The time-dependent toxicity means that older, weathered tire particles in soil may pose greater ecological risks than freshly deposited ones.
Risk assessment of tire wear in the environment – a literature review
This review assesses the environmental risks of tire wear emissions, which release microplastic-like particles containing polymers and potentially toxic chemicals into water and soil. While initial risk estimates suggest low risk from the particulate emissions themselves, the chemicals that leach from tire particles remain poorly characterized. The findings are relevant to human health because tire wear is one of the largest sources of microplastic pollution, and the leached chemicals may enter drinking water.
When and how leachate toxicity of tire wear particles peaks: quantifying its dynamics using dose-response analysis
Researchers quantified how leachate toxicity from tire wear particles (TWP) changes with weathering over time, using aging experiments and toxicity bioassays to map the temporal dynamics of toxic compound release. Toxicity peaked during early weathering as soluble compounds leached rapidly, then declined, providing data relevant to risk assessment of TWP in stormwater runoff.
Effects of sunlight exposure on tire tread particle leachates: Chemical composition and toxicity in aquatic systems
Researchers tested how sunlight exposure changes the chemical composition and toxicity of substances leaching from tire tread particles in water. They found that light-exposed tire particle leachates were significantly more toxic to zebrafish embryos, causing developmental abnormalities and reduced survival at lower concentrations. The study suggests that the environmental weathering of tire-derived microplastics can make their chemical releases more hazardous to aquatic life over time.
Behind conventional (micro)plastics: An ecotoxicological characterization of aqueous suspensions from End-of-Life Tire particles
Researchers studied the toxic effects of ground-up end-of-life tire particles on zebrafish larvae and found that finer tire powder was more harmful than coarser granules. The smaller particles released chemicals into the water that altered over 100 proteins involved in metabolic processes. The study suggests that recycled tire materials leach toxic substances that could pose risks to aquatic organisms.
A comparative analysis of the chemical composition and biofilm formation on tire wear particles from six different tire types
Researchers analyzed the chemical composition and biofilm communities forming on tire-wear particles compared to other microplastic types, finding that tire wear particles support distinct microbial assemblages. The unique surface chemistry of tire wear particles may promote the attachment of pathogens and toxin-producing microorganisms.