Comptes Rendus
Study of EPDM/PP polymeric blends: mechanical behavior and effects of compatibilization
Comptes Rendus. Mécanique, Volume 336 (2008) no. 9, pp. 714-721.

A blend of Ethylene Propylene Diene Monomer (EPDM) rubber reinforced by polypropylene (PP) particles has been processed and its hyperelastic behavior has been characterized under cyclic uni-axial tensile tests. The experimental results show a significant effect of the fraction of polypropylene particles (10%, 25% and 30% by weight). Moreover, from another series of tests conducted on materials containing compatibilizers at different mass concentration, it is observed that the introduction of a compatibilizer increases the rigidity of the blends and affects notably their macroscopic behavior. These observations are interpreted as a consequence of the modification at microlevel of adherence between particles and matrix phases. The use of a nonlinear micromechanical model allows us to confirm this interpretation.

Un matériau constitué d'une matrice d'Ethylene Propylène Diene Monomer (EPDM) renforcée par des particules de Polypropylène (PP) a été élaboré et son comportement hyperélastique a été caractérisé sous sollicitations de traction uni-axiale cyclique. Les résultats expérimentaux montrent un effet significatif de la fraction de particules de polypropylène (10%, 25% et 30% en masse). De plus, à partir d'une autre série de tests réalisés sur des matériaux auxquels sont adjoints des compatibiliseurs à différentes concentrations en masse, il est observé que l'introduction de tels compatibiliseurs accroît la rigidité des mélanges et affecte notablement leur comportement macroscopique. Ces observations expérimentales sont interprétées comme une conséquence de la modification à l'échelle microscopique de l'adhérence entre les particules et la matrice. La mise en oeuvre d'un modèle micromécanique non linéaire permet de confirmer cette interprétation.

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Published online:
DOI: 10.1016/j.crme.2008.06.004
Keywords: Solids and structures, Reinforced elastomers, Experimental study, Compatibilizer, Particles-matrix adherence
Mot clés : Solides et structures, Élastomères renforcés, Étude expérimentale, Compatibiliseur, Adhérence particules-matrice

Vanessa Bouchart 1; N. Bhatnagar 2; Mathias Brieu 1; A.K. Ghosh 3; Djimedo Kondo 1

1 Laboratoire de mécanique de Lille, UMR CNRS 8107, boulevard Paul-Langevin, 59655 Villeneuve d'Ascq cedex, France
2 Mechanical Engineering Department, Indian Institute of Technology, Haus Khaz, New Delhi 110016, India
3 Centre of Polymer Science and Engineering, Indian Institute of Technology, Haus Khaz, New Delhi 110016, India
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Vanessa Bouchart; N. Bhatnagar; Mathias Brieu; A.K. Ghosh; Djimedo Kondo. Study of EPDM/PP polymeric blends: mechanical behavior and effects of compatibilization. Comptes Rendus. Mécanique, Volume 336 (2008) no. 9, pp. 714-721. doi : 10.1016/j.crme.2008.06.004. https://comptes-rendus.academie-sciences.fr/mecanique/articles/10.1016/j.crme.2008.06.004/

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