| Titre : |
Effects of reprocessing cycles and ageing on the rheological and mechanical properties of virgin-recycled HDPE blends |
| Type de document : |
texte imprimé |
| Auteurs : |
Ridha Mnif, Auteur ; Riadh Elleuch, Auteur |
| Année de publication : |
2016 |
| Article en page(s) : |
8 p. |
| Note générale : |
Bibliogr. |
| Langues : |
Français (fre) |
| Catégories : |
Essais dynamiques
Gravimétrie (chimie analytique)
Polyéthylène haute densité
Polymères -- Détérioration
Polymères -- Propriétés mécaniques
Polymères -- Recyclage
Traction (mécanique)
Viscosité
|
| Index. décimale : |
668.9 Polymères |
| Résumé : |
The reprocessing ability of virgin and recycled High Density Polyethylene (HDPE) blends has been investigated to examine the recycling feasibility in industrial production. Virgin-recycled HDPE blends were re-processed and re-formed up to three cycles by extrusion moulding. The effect of recycled HDPE content and reprocessing cycles coupled with ageing through “transyl” on the properties of the prepared blends was evaluated by tensile test and by melt flow index (MFI) tests. Furthermore, the ageing of the blends were studied via an immersion in “transyl” lubricant (Hydrocarbons, C10-C13, N-Alkanes, Isoalckanes, Cyclics, Aromatics (2–25%)). The sorption process was analyzed by gravimetric measurements at different temperatures. Also, diffusion coefficients of solvent molecules in the HDPE samples were identified. Results revealed that the mechanical properties of the samples worsened on increasing the level of recycled HDPE and after each reprocessing operation even if the most relevant decreases were observed after the first reprocessing. The processability of virgin-recycled HDPE blends has lead to slight decrease of viscosity, more remarkable on increasing the recycled HDPE content. The rheological behaviour was not influenced by the reprocessing only at the first three reprocessing cycles. The combination of reprocessing and accelerated ageing has degraded the material faster than either processing or ageing performed separately. |
| Note de contenu : |
- EXPERIMENTAL : Materials and preparation - Melt flow index (MFI) - Tensile test - Gravimetric measurements
- RESULTS AND DISCUSSION : Effect of recycled HDPE content - Effect of reprocessing cycles - Effect of ageing and reprocessing cycles |
| Référence de l'article : |
704 |
| DOI : |
http://dx.doi.org/10.1051/mattech/2015056 |
| En ligne : |
http://www.mattech-journal.org/articles/mattech/pdf/2015/07/mt150052.pdf |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=25718 |
in MATERIAUX & TECHNIQUES > Vol. 103, N° 7 (2015) . - 8 p.
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