An elastomer with ultrahigh strain-induced crystallization
Name
sciadv.adj0411.pdf
Description
Published version
Size
1.34 MB
Format
Adobe PDF
Checksum (MD5)
38f464920b737d0b917dc151e0ae7aec
Author(s)
Hartquist, Chase M
Lin, Shaoting
Zhang, James H
Wang, Shu
Rubinstein, Michael
Zhao, Xuanhe
Date Issued
December 15, 2023
Journal
Science Advances
Publisher
American Association for the Advancement of Science (AAAS)
Citation
Hartquist, Chase M, Lin, Shaoting, Zhang, James H, Wang, Shu, Rubinstein, Michael et al. 2023. "An elastomer with ultrahigh strain-induced crystallization." Science Advances, 9 (50).
Version
Final published version
Abstract
Strain-induced crystallization (SIC) prevalently strengthens, toughens, and enables an elastocaloric effect in elastomers. However, the crystallinity induced by mechanical stretching in common elastomers (e.g., natural rubber) is typically below 20%, and the stretchability plateaus due to trapped entanglements. We report a class of elastomers formed by end-linking and then deswelling star polymers with low defects and no trapped entanglements, which achieve strain-induced crystallinity of up to 50%. The deswollen end-linked star elastomer (DELSE) reaches an ultrahigh stretchability of 12.4 to 33.3, scaling beyond the saturated limit of common elastomers. The DELSE also exhibits a high fracture energy of 4.2 to 4.5 kJ m
−2 while maintaining low hysteresis. The heightened SIC and stretchability synergistically promote a high elastocaloric effect with an adiabatic temperature change of 9.3°C.
−2 while maintaining low hysteresis. The heightened SIC and stretchability synergistically promote a high elastocaloric effect with an adiabatic temperature change of 9.3°C.
MIT Department
Massachusetts Institute of Technology. Department of Mechanical Engineering
Terms of Use
Creative Commons Attribution-Noncommercial
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1126/sciadv.adj0411
