NTP‐CERHR Expert Panel Report on the reproductive and developmental toxicity of styrene

Luderer, Ulrike; Collins, T.F.X.; Daston, George P.; Fischer, Lawrence J.; Gray, Ronald H.; Mirer, Franklin E.; Olshan, Andrew F.; Setzer, R. Woodrow; Treinen, Kimberley A.; Vermeulen, Roel

doi:10.1002/bdrb.20061

Cited by 8 publications

(1 citation statement)

References 97 publications

(305 reference statements)

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“…Styrene is always present in PS resins in trace amounts following the polymer synthesis pathway. Its concentration is regulated, particularly in applications involving food contact [ 24 , 25 ]. As seen in Table 2 , the styrene monomer content remaining in the SR-4 resin was 75% lower than in the MR-4 sample.…”

Section: Resultsmentioning

confidence: 99%

Recyclability of Post-Consumer Polystyrene at Pilot Scale: Comparison of Mechanical and Solvent-Based Recycling Approaches

Pin,

Soltani,

Negrier

et al. 2023

Polymers

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Solvent-based and mechanical recycling technology approaches were compared with respect to each process’s decontamination efficiency. Herein, post-consumer polystyrene (PS) feedstock was recycled by both technologies, yielding recycled PS resins (rPS). The process feedstock was subjected to four recycling cycles in succession to assess the technology perennity. The physico-chemical and mechanical properties of the rPS were then evaluated to discern the advantages and drawbacks of each recycling approach. The molecular weight of the mechanically recycled resin was found to decrease by 30% over the reprocessing cycles. In contrast, the solvent-base recycling technology yielded a similar molecular weight regarding the feedstock. This consistency in the rPS product is critical for consumer applications. Further qualitative and quantitative analyses on residual organic compounds and inorganic and particulate contaminants were investigated. It was found that the solvent-based technology is very efficient for purifying deeply contaminated feedstock in comparison to mechanical recycling, which is limited to well-cleaned and niche feedstocks.

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Section: Resultsmentioning

confidence: 99%