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Photoaging and Release Profile of Acrylonitrile Butadiene Styrene Microplastics Under Simulated Solar Radiation in Water
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Photoaging and release profile of acrylonitrile butadiene styrene microplastics under simulated solar radiation in water
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Researchers found that acrylonitrile butadiene styrene microplastics undergo significant photoaging under simulated solar radiation in water, releasing chemical additives and altering surface properties, which affects their environmental behavior and potential toxicity to aquatic organisms.
Photoaging mechanism of microplastics: a perspective on the effect of dissolved organic matter in natural water
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This perspective paper examines how microplastics in natural water photoage under UV irradiation via reactive oxygen species generation, breaking down polymer bonds, and explores how dissolved organic matter may accelerate or alter these aging pathways. Understanding photoaging is critical because it fragments plastics into smaller and more biologically available nanoplastics while releasing toxic chemical additives into aquatic ecosystems.
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Researchers investigated how UV radiation accelerates the fragmentation of plastic polymers in water, finding that solar-initiated autocatalytic thermal oxidation is a key mechanism driving microplastic generation in aquatic environments.
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Researchers modeled the chemical and hydrolytic aging of polyamide 6 in seawater using a new kinetic model that tracks chain scission and embrittlement, identifying the ductile-to-brittle transition as the physical threshold for microplastic fragment formation, while DNA metabarcoding revealed that bacterial communities colonizing the polymer surface shift distinctly depending on polymer type and weathering state.
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