Supergiant barocaloric effects in acetoxy silicone rubber over a wide temperature range : great potential for solid-state cooling
Imamura, William (Universidade Estadual de Campinas. Faculdade de Engenharia Mecânica)
Usuda, Érik Oda (Universidade Federal de São Paulo)
Paixão, Lucas Soares (Instituto de Física Gleb Wataghin)
Molina Bom, Nicolau (Institut Català de Nanociència i Nanotecnologia)
Gomes, Angelo Marcio (Universidade Federal de São Paulo. Instituto de Física)
Carvalho, Alexandre Magnus Gomes (Universidade Estadual de Maringá. Departamento de Engenharia Mecânica)

Date:	2020
Abstract:	Solid-state cooling based on caloric effects is considered a viable alternative to replace the conventional vapor-compression refrigeration systems. Regarding barocaloric materials, recent results show that elastomers are promising candidates for cooling applications around room-temperature. In the present paper, we report supergiant barocaloric effects observed in acetoxy silicone rubber-a very popular, low-cost and environmentally friendly elastomer. Huge values of adiabatic temperature change and reversible isothermal entropy change were obtained upon moderate applied pressures and relatively low strains. These huge barocaloric changes are associated both to the polymer chain rearrangements induced by confined compression and to the first-order structural transition. The results are comparable to the best barocaloric materials reported so far, opening encouraging prospects for the application of elastomers in near future solid-state cooling devices.
Rights:	Tots els drets reservats.
Language:	Anglès
Document:	Article ; recerca ; Versió sotmesa a revisió
Subject:	Solid-state cooling ; Barocaloric effect ; Elastomer ; Silicone rubber ; Crystalline-amorphous transition
Published in:	Chinese Journal of Polymer Science (English Edition), Vol. 38, issue 9 (Sep. 2020) , p. 999-1005, ISSN 1439-6203

DOI: 10.1007/s10118-020-2423-9

Preprint 20 p, 975.7 KB

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Research literature > UAB research groups literature > Research Centres and Groups (research output) > Experimental sciences > Catalan Institute of Nanoscience and Nanotechnology (ICN2)
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Articles > Published articles