Effect of Gamma Radiation on the Processability of New and Recycled PA-6 Polymers

González Niño, Carlos ; Vidal, Julio ; Del Cerro, Martina ; Royo Pascual, Lucía (Universidad de Zaragoza) ; Murillo Ciordia, Gonzalo ; Castell, Pere

Resumen: The growing quantities of plastic waste have raised environmental concerns, with almost a quarter of disposed plastics being sent to landfill. This has motivated research efforts into various recycling technologies to ease dependence on fossil resources, increasing circularity. Irradiation of various kinds, such as electron beam, beta and gamma rays, has been studied in the past as a way of revamping end-of-life polymer properties. The present work focuses on the effects of gamma radiation on the processability of new and recycled polymers, which is intimately linked with their rheological properties. In this study, both virgin and recycled polymers were irradiated under different radiation doses and the effects of the radiation on their viscosity assessed and compared. Results were analyzed making use of different theoretical relationships, and the causes of the changes in rheology were investigated by means of various characterization techniques, such as GPC, FTIR, EPR and DSC. Finally, the rheological curves of all samples were fitted to the Ostwald–de Waele relationship and the dependence of its parameters on the absorbed dose fitted to a function.

Idioma: Inglés

DOI: 10.3390/polym15030613

Año: 2023

Publicado en: Polymers 15, 3 (2023), 613 [17 pp]
ISSN: 2073-4360

Factor impacto JCR: 4.7 (2023)

Categ. JCR: POLYMER SCIENCE rank: 19 / 95 = 0.2 (2023) - Q1 - T1

Factor impacto CITESCORE: 8.0 - Chemistry (all) (Q1) - Polymers and Plastics (Q1)

Factor impacto SCIMAGO: 0.8 - Polymers and Plastics (Q1) - Chemistry (miscellaneous) (Q1)

Financiación: info:eu-repo/grantAgreement/EC/H2020/820665/EU/Demonstration of Innovative Technologies towards a more Efficient and Sustainable Plastic Recycling/POLYNSPIRE

Tipo y forma: Artículo (Versión definitiva)

Área (Departamento): Área Ingeniería Química (Dpto. Ing.Quím.Tecnol.Med.Amb.)