Morphological and mechanical properties of thermoplastic elastomers based on recycled high density polyethylene and recycled natural rubber / A. Fazli in INTERNATIONAL POLYMER PROCESSING, Vol. 36, N° 2 (2021)  

[article]  inINTERNATIONAL POLYMER PROCESSING > Vol. 36, N° 2 (2021) . - p. 156-164 Titre : Morphological and mechanical properties of thermoplastic elastomers based on recycled high density polyethylene and recycled natural rubber Type de document : texte imprimé Auteurs : A. Fazli, Auteur ; D. Rodrigue, Auteur Année de publication : 2021 Article en page(s) : p. 156-164 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Alliages polymères Alliages polymères -- propriétés mécaniques Caoutchouc Caractérisation Elastomères thermoplastiques Elastomères thermoplastiques -- Propriétés mécaniques Elastomères thermoplastiques -- Propriétés physiques Formulation (Génie chimique) Morphologie (matériaux) Polyéthylène haute densité Produits et matériaux recyclés Index. décimale : 668.4 Plastiques, vinyles Résumé : In this work, thermoplastic elastomers (TPE) are produced by melt mixing of recycled high-density polyethylene (RHD) with two types of off-the-road (OTR) ground tire rubber (GTR). Non-regenerated (NR) and regenerated (RR) rubbers are used to investigate the effect of GTR concentration and regeneration on the blends properties containing up to 90 wt.% GTR. The blend morphology is studied by scanning electron microscopy (SEM) to show incompatibility and low interfacial adhesion between RHD and GTR (NR and RR) especially above 40 wt.% RR. This behavior is attributed to the GTR regeneration process and agglomeration of RR particles with lower surface area and affinity toward RHD compared with NR. In all the compounds, the mechanical properties in tension of RR blends were lower than for NR blends, which is attributed to the degradation of the GTR backbone chains lowering the molecular weight (MW) during the regeneration process. Also, NR has a more important effect on impact strength improvement due to its higher crosslinked structure making the particles more deformable/elastic to absorb the mechanical energy before crack initiation. The experimental results also show that 80 wt.% GTR is the optimum concentration for the production of low cost and eco-friendly TPE based on recycled materials. Note de contenu : - EXPERIMENTAL : Materials - Processing - Characterization - RESULTS AND DISCUSSION : Processability - Morphology - Mechanical Properties - Physical Properties - Table 1 : Coding and formulation of the samples produced - Table 2 : Parameters related to the processability of the compounds produced DOI : https://doi.org/10.1515/ipp-2020-4006 En ligne : https://drive.google.com/file/d/18CmU0Wybroybj7EF3V-XcNsgHX5o5ZLJ/view?usp=shari [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=36359 [article]

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