Mechanical properties and molecular structures of virgin and recycled HDPE polymers used in gravity sewer systems - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Polymer Testing Année : 2015

Mechanical properties and molecular structures of virgin and recycled HDPE polymers used in gravity sewer systems

Résumé

The widespread use of plastics in the conditioning, packaging and building material sectors generates an enormous amount of industrial waste which could be recycled for wastewater pipes and fittings. Nevertheless, current manufacturing standards in the piping industry recommend against the use of post-consumer recycled materials-a policy based on inadequate understanding of the properties and long-term mechanical performance of recycled materials. The present study compared the material characteristics of virgin and recycled high-density polyethylene (HDPE) plastics commonly found in the piping industry. Mechanical testing, oxidative induction time (OIT), melt flow index (MFI) and thermal analysis were used in conjunction with X-ray fluorescence, size exclusion chromatography and 13C solid-state NMR to evaluate mechanical behavior and molecular structure as well as contaminant or filler contents. This study provides evidence for the degradation processes impact that can occur when post-industrial and post-consumer polymers are recycled. However, the study identified two measures to improve the material qualities of post-consumer recycled HDPE: 1) reducing the amount of contaminants or, alternatively, improving their compatibility with HDPE resins, and 2) improving current sorting and recycling processes to increase the amount of tie molecules in HDPE materials.
Fichier principal
Vignette du fichier
Mechanical_properties_molecular_structures_HDPE_polymers_accepted-manuscript (1).pdf (425.88 Ko) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)
Loading...

Dates et versions

hal-01725496 , version 1 (11-11-2019)

Identifiants

Citer

Mathias Alzerreca, Michael Paris, Olivier Boyron, Dominique Orditz, Guy Louarn, et al.. Mechanical properties and molecular structures of virgin and recycled HDPE polymers used in gravity sewer systems. Polymer Testing, 2015, 46, pp.1 - 8. ⟨10.1016/j.polymertesting.2015.06.012⟩. ⟨hal-01725496⟩
106 Consultations
2777 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More