Assessing the mechanical behaviour of reusable polyurethane networks with graphene as internal nano-heater

Polymer, Год журнала: 2025, Номер unknown, С. 128174 - 128174

Опубликована: Фев. 1, 2025

Язык: Английский

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Post-Consumer Recycled PET: A Comprehensive Review of Food and Beverage Packaging Safety in Brazil

Polymers, Год журнала: 2025, Номер 17(5), С. 594 - 594

Опубликована: Фев. 24, 2025

Polyethylene terephthalate (PET) is widely used in the food and beverage packaging sector due to its chemical mechanical properties. Although PET a fossil-based polymer, recyclability significantly contributes reducing environmental impacts caused by excessive plastic consumption. However, growing demand for post-consumer recycled (PET-PCR) has raised concerns about efficiency of decontamination processes involved recycling this material. This review initially addresses synthesis processes, highlighting injection stretch blow molding as predominant technique production. It then discusses reverse logistics strategy promote sustainability through recovery packaging, such bottles. examines methods PET-PCR production, safety requirements including positive lists permitted substances, contaminant migration limits, non-intentionally added substances (NIASs), updated criteria National Health Surveillance Agency (ANVISA) food-grade resins. Finally, explores future prospects using sector, assessing potential technological advancements enhance safety.

Язык: Английский

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Effect of Silane Grafting of PET Foam and Areca Fiber on Hot Water Aged Vinyl Ester Composite

Fibers and Polymers, Год журнала: 2025, Номер unknown

Опубликована: Март 14, 2025

Язык: Английский

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Mechanical Recycling of PET Multi-Layer Post-Consumer Packaging: Effects of Impurity Content

Recycling, Год журнала: 2024, Номер 9(5), С. 93 - 93

Опубликована: Окт. 8, 2024

The recycling of PET trays is highly challenging. aim this paper was to investigate the issues related mechanical process and, correlation between feedstock composition and quality produced rPET. Four feedstocks with different degrees impurity were mechanically recycled at a laboratory pilot scale. optical thermal properties rPET products examined determine seek relations starting level impurities. final trays’ found be affected by presence impurities (organics) multi-material (non-PET) elements in feedstocks. crystallised faster for contaminated showed lower molecular mass higher yellow index values due degradation. Yellowing crucial parameter assessing degradation Injection moulded samples corresponding contamination levels, reported Yellow Index equal 179 177 compared 15 mono-PET sample. intrinsic viscosity decreased from 0.60 dL/g just above 0.30 dL/g, losses more significant soiled or A method improving would involve purification

Язык: Английский

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Sustainable management of polyethylene terephthalate waste flow using a fuzzy frank weighted assessment model

Engineering Applications of Artificial Intelligence, Год журнала: 2024, Номер 138, С. 109254 - 109254

Опубликована: Сен. 13, 2024

Язык: Английский

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Quantity and quality of paper-based packaging in mixed MSW and separate paper collection – a case study from Vienna, Austria

Resources Conservation and Recycling, Год журнала: 2024, Номер 215, С. 108091 - 108091

Опубликована: Дек. 20, 2024

Язык: Английский

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