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Article Dans Une Revue Express Polymer Letters Année : 2022

Observation of heterogeneities in elastocaloric natural/wastes rubber composites

Résumé

The strain-induced crystallization and elastocaloric properties of various natural rubber (NR)/ground tire rubber (GTR) blends, comprising waste particles of diverse sizes and contents, were investigated. The decreasing inter-distance between particles in conjunction with their increasing content as studied by micro-computed tomography (μCT) as well as the inter-melling between GTR and NR matrix were observed. It resulted in a strain localization in the NR matrix at the GTR and NR interface at the origin of mechanical reinforcement upon tensile deformation. In addition, GTR particles were found to show a nucleating ability on strain-induced crystallization (SIC) and elastocaloric properties independently of the particle size. The strain localization was found to relate to a localization of the temperature field, suggesting localization of the elastocaloric effect in NR/GTR blends. The evidence of such heterogeneities would be of interest for the proper design of elastocaloric waste-based rubber composites for heating/cooling applications.
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Dates et versions

hal-04434280 , version 1 (02-02-2024)

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Nicolas Candau, Eduard Vives, Ana Ines Fernandez, Oguzhan Oguz, Guillaume Corvec, et al.. Observation of heterogeneities in elastocaloric natural/wastes rubber composites. Express Polymer Letters, 2022, Express Polymer Letters, 16 (12), pp.1331-1347. ⟨10.3144/expresspolymlett.2022.96⟩. ⟨hal-04434280⟩
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