Observation of heterogeneities in elastocaloric natural/wastes rubber composites

Candau, Nicolas and Vives, Eduard and Fernández, Ana Inés and Oğuz, Oğuzhan and Corvec, Guillaume and Federico, Carlos Eloy and Fernandes, João Paulo Cosas and Stoclet, Gregory and Maspoch, Maria Lluïsa (2022) Observation of heterogeneities in elastocaloric natural/wastes rubber composites. Express Polymer Letters, 16 (12). pp. 1331-1347. ISSN 1788-618X

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Abstract

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.
Item Type: Article
Uncontrolled Keywords: elastocaloric properties; material testing; materials for energy; recycling; rubber
Divisions: Faculty of Engineering and Natural Sciences > Academic programs > Materials Science & Eng.
Faculty of Engineering and Natural Sciences
Integrated Manufacturing Technologies Research and Application Center
Depositing User: Oğuzhan Oğuz
Date Deposited: 26 Mar 2023 16:50
Last Modified: 26 Mar 2023 16:50
URI: https://research.sabanciuniv.edu/id/eprint/45128

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