Reversible two-way tuning of thermal conductivity in an end-linked star-shaped thermoset

Chase M. Hartquist, Buxuan Li, James H. Zhang, Zhaohan Yu, Guangxin Lv, Jungwoo Shin, Svetlana V. Boriskina, Gang Chen (), Xuanhe Zhao () and Shaoting Lin ()
Additional contact information
Chase M. Hartquist: Massachusetts Institute of Technology
Buxuan Li: Massachusetts Institute of Technology
James H. Zhang: Massachusetts Institute of Technology
Zhaohan Yu: Michigan State University
Guangxin Lv: Massachusetts Institute of Technology
Jungwoo Shin: Massachusetts Institute of Technology
Svetlana V. Boriskina: Massachusetts Institute of Technology
Gang Chen: Massachusetts Institute of Technology
Xuanhe Zhao: Massachusetts Institute of Technology
Shaoting Lin: Massachusetts Institute of Technology

Nature Communications, 2024, vol. 15, issue 1, 1-12

Abstract: Abstract Polymeric thermal switches that can reversibly tune and significantly enhance their thermal conductivities are desirable for diverse applications in electronics, aerospace, automotives, and medicine; however, they are rarely achieved. Here, we report a polymer-based thermal switch consisting of an end-linked star-shaped thermoset with two independent thermal conductivity tuning mechanisms—strain and temperature modulation—that rapidly, reversibly, and cyclically modulate thermal conductivity. The end-linked star-shaped thermoset exhibits a strain-modulated thermal conductivity enhancement up to 11.5 at a fixed temperature of 60 °C (increasing from 0.15 to 2.1 W m−1 K−1). Additionally, it demonstrates a temperature-modulated thermal conductivity tuning ratio up to 2.3 at a fixed stretch of 2.5 (increasing from 0.17 to 0.39 W m−1 K−1). When combined, these two effects collectively enable the end-linked star-shaped thermoset to achieve a thermal conductivity tuning ratio up to 14.2. Moreover, the end-linked star-shaped thermoset demonstrates reversible tuning for over 1000 cycles. The reversible two-way tuning of thermal conductivity is attributed to the synergy of aligned amorphous chains, oriented crystalline domains, and increased crystallinity by elastically deforming the end-linked star-shaped thermoset.

Date: 2024
References: View references in EconPapers View complete reference list from CitEc
Citations:

Downloads: (external link)
https://www.nature.com/articles/s41467-024-49354-2 Abstract (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:nat:natcom:v:15:y:2024:i:1:d:10.1038_s41467-024-49354-2

Ordering information: This journal article can be ordered from
https://www.nature.com/ncomms/

DOI: 10.1038/s41467-024-49354-2

Access Statistics for this article

Nature Communications is currently edited by Nathalie Le Bot, Enda Bergin and Fiona Gillespie

More articles in Nature Communications from Nature
Bibliographic data for series maintained by Sonal Shukla () and Springer Nature Abstracting and Indexing ().