Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Typical SEM images of fractured surfaces of composite containing 7.5% microcapsules: (A) Virgin fracture surface, and (B) fractured, healed, and re-fractured surface. Arrows in (B) indicate polymer films formed by the released healing liquid that was polymerized at the cracked plane via reaction with the initiator in the resin matrix.
