Year: 2026
Type: article
Abstract: Aerobic photochemical degradation of commercially available polystyrenes was successfully carried out in chlorinated solvents. Solvents, such as dichloromethane, 1,2,4-trichlorobenzene, and chloroform, were used as both the reaction medium and a source of halogen radicals under UV-light irradiation. The degradation kinetics in the absence of a photocatalyst was investigated. This approach achieved efficient degradation at room temperature, breaking down high molar mass polystyrenes into oligomers (< 1 kDa) while generating valuable small-molecule products such as benzoic acid. The effects of solvent, concentration, molecular weight, and light source on degradation kinetics were investigated. The process predominantly yielded benzoic acid under an O 2 atmosphere, whereas under open-air conditions, it yielded a mixture of oxidized oligomeric products.
Institution: Carnegie Mellon University
Language: English
Subfield: Water Science and Technology
Field: Environmental Science
Domain: Physical Sciences
Open Access status: hybrid
Estimated APC paid: $4,190
OpenAlex ID: W7204199897