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Title: Autonomous Self-Healing Elastomers with Unprecedented Adhesion Force

Journal Article · · Advanced Functional Materials
 [1];  [2];  [3];  [4];  [5]; ORCiD logo [2]; ORCiD logo [6]; ORCiD logo [1]
  1. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Chemical Sciences Div.
  2. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Chemical Sciences Div.; Univ. of Tennessee, Knoxville, TN (United States). Bredesen Center for Interdisciplinary Research and Graduate Education
  3. Univ. of Tennessee, Knoxville, TN (United States). Dept. of Chemistry; Univ. of Tennessee, Knoxville, TN (United States). Bredesen Center for Interdisciplinary Research and Graduate Education
  4. Univ. of Tennessee, Knoxville, TN (United States). Dept. of Materials Science and Engineering
  5. Univ. of Tennessee, Knoxville, TN (United States). Dept. of Chemistry
  6. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Buildings and Transportation Science Div.

Abstract Self‐healable elastomers are extremely attractive due to their ability to prolong product lifetime. An additional function that could further expand their applications is strong adhesion force to clean and dusty surfaces. This study reports a series of autonomous self‐healable and highly adhesive elastomers (ASHA‐Elastomer) that are fabricated via a simple, efficient, and scalable process. The obtained elastomers exhibit outstanding mechanical properties with elongation at break up to 2102% and toughness (modulus of toughness) of 1.73 MJ m –3 . The damaged ASHA‐Elastomer can autonomously self‐heal with full recovery of functionalities, and the healing process is not affected by the presence of water. The elastomers are found to possess an ultrahigh adhesion force up to 3488 N m −1 , greatly outperforming previously reported self‐healing adhesive elastomers. Furthermore, the adhesion force of the ASHA‐Elastomer is negligibly affected by dust on the surface, in stark contrast with regular adhesive polymers that have adhesion strengths extremely sensitive to dust. The successful development of high‐toughness, autonomous self‐healable, and ultra‐adhesive elastomers will enable a wide range of applications with enhanced longevity and versatility, including their use in sealants, adhesives, and stretchable devices.

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Energy Efficiency Office. Building Technologies Office; US-China Clean Energy Research Center for Building Energy Efficiency (CERC BEE)
Grant/Contract Number:
AC05-00OR22725; DE‐AC05‐00OR22725
OSTI ID:
1777768
Alternate ID(s):
OSTI ID: 1804501
Journal Information:
Advanced Functional Materials, Vol. 31, Issue 4; ISSN 1616-301X
Publisher:
WileyCopyright Statement
Country of Publication:
United States
Language:
English

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