Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 3, Issue 8, Pages 3072-3077Publisher
AMER CHEMICAL SOC
DOI: 10.1021/am200584z
Keywords
noncovalent interactions; self-healing polymers; adhesion; ring-opening metathesis polymerization; microencapsulation; fracture testing
Funding
- Air Force Office of Scientific Research (MURI) [FA9550-05-1-0346]
- Department of Defense (National Defense Science and Engineering)
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Dimethylnorbomene ester (DNE) is successfully used as a noncovalent adhesion promoter, DNE was confirmed to copolymerize with dicyclopentadiene (DCPD) to yield a copolymer with better adhesion to an EPON 828 epoxy matrix relative to poly(DCPD) alone. The mechanical properties of the copolymer were comparable to that of poly(DCPD) alone. An optimized blend of the monomers was encapsulated using a urea-formaldheyde microencapsulation procedure and the resulting capsules were used for in situ self-healing experiments. Improved healing efficiency was observed for samples containing the DCPD/DNE capsules under conditions in which the monomers were efficiently polymerized.
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