UV stabilizers can foster early development of biofilms on freshwater microplastics

Effect of Mass Fraction on Leaching Kinetics of Hydrophobic Ultraviolet Stabilizers in Low-Density Polyethylene

“…Notably, the leaching kinetics of the five selected UV stabilizers at 25 °C is considered the simplest case without any effects from external factors (i.e., weathering processes, pH, dissolved organic matter, salinity, and temperature), which is not reflective of real-world conditions, in which MPs are affected by external stresses (i.e., sunlight, mechanical forces, temperature, and microorganism attack), which could lead to surface modification of the MPs and interaction between the additives and polymers, consequently altering the leaching kinetics of the plastic additives. ,− Moreover, because the half-life for plastic degradation is expected to be approximately 100 years, , leaching half-lives longer than 100 years might have limited meaning under real environmental conditions. Therefore, actual leaching is expected to be dominated by environmental factors rather than diffusion processes, with diffusion as the limiting factor.…”

Differences in the Residual Behavior of a Bumetrizole-Type Ultraviolet Light Absorber during the Degradation of Various Polymers

“…However, the quantitative impact of MPs on marine life remains uncertain, and there is no definite answer to the numerous concerns surrounding this issue. Plastic products, which are rarely used alone and often contain various types of organic or inorganic compounds, and among them, organic additives [ 11 , 12 , 13 , 14 ], are of particular concerns. These additives may undergo transformation during MP formation.…”