Endo- and exothermal mechanocaloric response in rubbers

Matsuo, Takasuke; Takajo, Daisuke

doi:https://doi.org/10.1007/s10973-024-13361-8

Endo- and exothermal mechanocaloric response in rubbers

Matsuo, Takasuke; Takajo, Daisuke

Journal of Thermal Analysis and Calorimetry, 2024

アクセス数:21件（2025-03-20 11:18 集計）

固定URL: https://hdl.handle.net/11094/98094

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タイトル	Endo- and exothermal mechanocaloric response in rubbers
著者	NRID 1000000028185 1000000028185 著者名 Matsuo, Takasuke
著者	NRID 1000050456993 1000050456993 ORCID 0000-0001-6035-9304 0000-0001-6035-9304 researchmap permalink takajodaisuke takajodaisuke Scopus Author ID 6506998501 6506998501 著者名 Takajo, Daisuke
キーワード等	Endothermal mechanocaloric effect
	Entropy of extension
	Exothermal mechanocaloric effect
	Ideal rubber
	Non-ideal rubber
	Rubber elasticity
内容	The version of record of this article, first published in Journal of Thermal Analysis and Calorimetry, is available online at Publisher’s website: https://doi.org/10.1007/s10973-024-13361-8.
抄録	We investigated mechanocaloric properties of two silicone rubbers using an in-house made apparatus. Tension f and temperature change ΔT of the rubber samples in the form of tapes were measured as they were extended up to a normalized length λ≈2 at a constant rate. Endothermal and exothermal components of the thermal response were observed and separated. The engineering stress and (decrease of) the entropy density derived from the data were analyzed. The number densities of the partial chains and the coefficients of the positive (endothermal) entropy contribution were determined as material constants of the rubbers. Non-idealities were revealed by the large difference between the work done on the rubber for the extension and the heat that evolved in the process. It decreased to a considerable extent when the heat was corrected for the endothermal effect arising from the above-mentioned endothermal entropy contribution. This may be understood as an indication of hidden near-ideality of silicone rubbers. Dissipation of the work into heat is quantified using the difference between the temperature changes on extension and contraction.
出版者	Springer Science and Business Media B.V.
収録物名	Journal of Thermal Analysis and Calorimetry
刊行年月	2024-07-31
言語	英語
ハンドルURL	https://hdl.handle.net/11094/98094
PISSN	13886150
eISSN	15882926
関連情報 (isIdenticalTo)	DOI (出版社版) https://doi.org/10.1007/s10973-024-13361-8
アクセス権	open access
権利情報	This article is licensed under a Creative Commons Attribution 4.0 International License.
出版タイプ	Version of Record
カテゴリ	学術雑誌論文 Journal Article

資源タイプ	学術雑誌論文
ローカル資源タイプ	学術雑誌論文
DCTERMS.bibliographicCitation	Journal of Thermal Analysis and Calorimetry. 2024
DC.title	Endo- and exothermal mechanocaloric response in rubbers
DC.creator	Matsuo, Takasuke
DC.creator	Takajo, Daisuke
DC.publisher	Springer Science and Business Media B.V.
DC.language' scheme='DCTERMS.RFC1766	英語
DCTERMS.issued' scheme='DCTERMS.W3CDTF	2024-07-31
DC.identifier	https://doi.org/10.1007/s10973-024-13361-8
DC.subject	Endothermal mechanocaloric effect
	Entropy of extension
	Exothermal mechanocaloric effect
	Ideal rubber
	Non-ideal rubber
	Rubber elasticity
DC.description	The version of record of this article, first published in Journal of Thermal Analysis and Calorimetry, is available online at Publisher’s website: https://doi.org/10.1007/s10973-024-13361-8.
DCTERMS.abstract	We investigated mechanocaloric properties of two silicone rubbers using an in-house made apparatus. Tension f and temperature change ΔT of the rubber samples in the form of tapes were measured as they were extended up to a normalized length λ≈2 at a constant rate. Endothermal and exothermal components of the thermal response were observed and separated. The engineering stress and (decrease of) the entropy density derived from the data were analyzed. The number densities of the partial chains and the coefficients of the positive (endothermal) entropy contribution were determined as material constants of the rubbers. Non-idealities were revealed by the large difference between the work done on the rubber for the extension and the heat that evolved in the process. It decreased to a considerable extent when the heat was corrected for the endothermal effect arising from the above-mentioned endothermal entropy contribution. This may be understood as an indication of hidden near-ideality of silicone rubbers. Dissipation of the work into heat is quantified using the difference between the temperature changes on extension and contraction.
DC.rights	This article is licensed under a Creative Commons Attribution 4.0 International License.
DC.format	98094
citation_title	Endo- and exothermal mechanocaloric response in rubbers
citation_author	Matsuo, Takasuke
citation_author	Takajo, Daisuke
citation_publisher	Springer Science and Business Media B.V.
citation_language	英語
citation_date	2024-07-31
citation_journal_title	Journal of Thermal Analysis and Calorimetry
citation_doi	https://doi.org/10.1007/s10973-024-13361-8
citation_public_url	https://hdl.handle.net/11094/98094

Endo- and exothermal mechanocaloric response in rubbers

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