Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 2, Issue 4, Pages 1141-1149Publisher
AMER CHEMICAL SOC
DOI: 10.1021/am9009378
Keywords
biomimetic; Diels-Alder polymers; functionalization of polymers; stimuli-sensitive polymers
Funding
- U.S. Army Research Laboratory [W911NF-06-2-0013]
- National Science Foundation
- University of Pennsylvania [DGE-0654313]
- Graduate Research Fellowship Program
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Self-healing materials are particularly desirable for load-bearing applications because they offer the potential For increased safety and material lifetimes. A furan-functionalized polymer network was designed that can heal via covalent bonding across the crack surface with the use of a healing agent consisting of a bismaleimide in solution. Average healing efficiencies of approximately 70% were observed. The healing ability of fiber-reinforced composite specimens was investigated with flexural, short beam shear, and double cantilever beam specimens. It was found that solvent amount and maleimide concentration play key roles in determining healing efficiency.
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