Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 14, Issue 23, Pages 27413-27420Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsami.2c0557027413
Keywords
diselenide metathesis; underwater self-healing; remote self-healing; laser-responsive; visible-light-responsive
Funding
- National Natural Science Foundation of China [21734006]
- Foundation for Innovative Research Groups of the National Natural Science Foundation of China [21821001]
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In this study, a remote self-healing underwater elastomer material was developed using visible-light-responsive diselenide bonds. The material exhibited excellent underwater transmission capability and fast healing speed, with a strain at break of up to 200% in 5 minutes and almost full recovery of toughness within 1 hour. This provides a new direction for underwater pipeline sealing applications.
The development of underwater remote stimulus-responsive self-healing polymer materials for applications in inaccessible and urgent situations is very challenging because water can readily disturb traditional noncovalent bonds and absorb heat, UV light, IR light, and electromagnetic wave energy at the wave band of micrometers and millimeters. Herein, visible-light-responsive diselenide bonds are employed as the healing moieties to produce a water-enhanced and remote self-healing elastomer triggered by a blue laser, which possesses excellent underwater transmission capability. During healing, the strain at break reaches similar to 200% in 5 min and its toughness almost fully recovers within 1 h, which is estimated to be the fastest reported to date for healing silicone elastomers with a healing efficiency above 90%. The remote underwater pipeline sealing is instantly accomplished with the diselenide-containing elastomers by a blue laser 3 m away, thereby providing a direction for future emergent healing applications.
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