Synthesis of ¹⁴C‐Labeled Polyethylene Terephthalate and Generation of ¹⁴C‐Nanoparticles for Fate and Disposition Studies

Journal of Labelled Compounds and Radiopharmaceuticals, Год журнала: 2025, Номер 68(3)

Опубликована: Март 1, 2025

Polyethylene terephthalate (PET) is one of the most extensively used plastics in daily life. Due to its prevalent use, it ubiquitous environment and a significant contributor plastic pollution. Continuous exposure photochemical, thermal, biological, mechanical processes makes PET susceptible slow degradation production microsized and/or nanosized particles known as microplastic/nanoplastic (MP/NP). MP/NP are widely detected environment, including drinking water human food; consequently, knowledge gaps on impacts food sources have gained global attention. A large gap bioaccumulation fate animals. The application carbon-14 labeled NP animals would provide relatively straightforward approach understanding degree absorption tissue distribution after absorption. Here, simple, fast, efficient synthetic method described produce [14C]-PET NP. comprises polycondensation terephthaloyl chloride readily accessible [14C]-ethylene glycol followed by nanoprecipitation. synthesized were characterized nuclear magnetic resonance spectroscopy (NMR), Fourier transform infrared (FTIR), dynamic light scattering spectroscopy, thermogravimetric analyzer (TGA), UV-Vis spectroscopy.

Язык: Английский

Advancements in Chemical Recycling Catalysts for Plastic Waste in South Korea

Catalysts, Год журнала: 2025, Номер 15(5), С. 414 - 414

Опубликована: Апрель 23, 2025

Plastics are widely used in various industries because of their light weight, low cost, and high durability. The mass production consumption plastics have led to a rapid increase plastic waste problem, necessitating the development effective recycling technologies. chemical has emerged as promising strategy address these challenges, enabling conversion into high-purity monomers or oils, even from contaminated mixed feedstock. This review focuses on catalysts for South Korea, which one highest per capita rates both academic industrial efforts this field. We examine catalytic depolymerization processes recovering polymers, such polyethylene terephthalate (PET) polycarbonate (PC), well pyrolysis polyolefins, including (PE), polypropylene (PP), polystyrene (PS). By summarizing recent research initiatives highlights strategic role country advancing recycling. Moreover, proposes future directions reusable catalysts, energy-efficient process, strategies waste.

Язык: Английский

Safety challenges of mechanically recycled polyethylene terephthalate for food contact materials: A review

Journal of Environmental Management, Год журнала: 2025, Номер 383, С. 125425 - 125425

Опубликована: Апрель 23, 2025

Язык: Английский