We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
[Adsorption and Desorption Behavior of PAEs Plasticizer on PVC and Rubber Particles After Natural Environment Aging].
AI summary Read the abstract
This study characterized adsorption and desorption behavior of phthalate plasticizers on PVC and rubber microparticles, finding that polymer type, particle aging, and environmental conditions govern plasticizer release rates.
Microplastics （MPs） coexist with plasticizers in the aqueous environment to form composite pollution, but the adsorption and desorption behaviors of MPs and plasticizers under natural conditions are unknown. Polyvinyl chloride （PVC） and rubber were used as the target MPs to characterize the changes in their morphological features after aging for one anniversary in atmospheric exposure and lake sedimentary burial environments and to investigate the adsorption and desorption behavior of the MPs to the coexisting phthalate esters （PAEs） plasticizer before and after aging. The results showed that the surface of MPs was rougher after exposure to the atmospheric environment and burial in a depositional environment, showing the characteristics of porous polymers. The carbonyl index （CI） of PVC and rubber increased by 62.2% and 321.2%, respectively, in the atmospheric environment and increased by 51.1% and 223.1%, respectively, in the depositional environment. The atmospheric exposure was capable of accelerating the aging process of MPs. PAEs were adsorbed on the surface of MPs through hydrophobic interaction, and the amount of adsorption was significantly and positively correlated with their hydrophobic properties. The adsorption capacity and adsorption rate of PVC on PAEs were inhibited after aging. Aging promoted the adsorption of rubber on strongly hydrophobic PAEs plasticizers and inhibited the adsorption of weakly hydrophobic PAEs. The environmental aging process reduced the desorption of strongly hydrophobic PAEs from rubber, enhanced the reversibility of rubber adsorption of weakly hydrophobic PAEs, and increased the desorption rate of PAEs from PVC.
More Papers Like This
Desorption of Bisphenol A and Dibutyl Phthalate from the Surfaces of Polyamide Microplastics: Crucial Role of Hydrophobicity
AI summary Read the abstract
Researchers investigated the desorption of bisphenol A and dibutyl phthalate from polyamide microplastics in freshwater, finding that hydrophobicity is the primary controlling factor in plasticizer release rates. Aging treatments including NaClO, Fenton, and UV exposure altered microplastic surface properties and subsequently modified desorption behavior of both contaminants.
Desorption ofBisphenol A and Dibutyl Phthalate fromthe Surfaces of Polyamide Microplastics: Crucial Role of Hydrophobicity
AI summary Read the abstract
Researchers investigated the desorption of bisphenol A and dibutyl phthalate from polyamide microplastics in freshwater, finding hydrophobicity as the primary driver of plasticizer release. Aging of microplastics via NaClO, Fenton, and UV treatments altered surface properties and modified the desorption behavior of both contaminants under varying water chemistry conditions.
Effects of chemical and natural ageing on the release of potentially toxic metal additives in commercial PVC microplastics
AI summary Read the abstract
Researchers aged commercial PVC microplastics under chemical and natural weathering conditions and measured release of potentially toxic trace metals added as stabilizers, finding that weathering significantly increased metal leaching rates, with cadmium and lead among the metals released.
Threat of plastic ageing in marine environment. Adsorption/desorption of micropollutants.
AI summary Read the abstract
Three plastic types (PVC, PET, and biodegradable PBAT) were aged in a French bay for 502 days to study how weathering affects their adsorption and release of pollutants. PVC was found to rapidly leach estrogenic compounds into seawater and later adsorb heavy metals, raising concern about the chemical hazards of aged marine plastics.
Desorption of phthalates from microplastics into surface water. In vitro study.
AI summary Read the abstract
This conference presentation examined the desorption of phthalates from microplastics into surface water through an in vitro study. The research investigated how plastic-associated phthalate plasticizers leach into aquatic environments under simulated conditions.
Research digests by email
When a large batch of papers lands in the Atlas, we read through it and send a short write-up of what stood out.