| 초록 |
Self-healing polymers are inspired by living systems, in which minor damage triggers an autonomic healing response. In biological systems, chemical signals release at the site of fracture initiate systemic response that transport repair agents to the site of injury and promotes healing. The approaching crack ruptures the embedded microcapsules, releasing healing agent into the crack ruptures the embedded microcapsules, releasing healing agent into the crack plan through capillary action. Polymerization of the healing agent is triggered by contact with the embedded catalyst, bonding the crack faces. Dicyclopentadiene (DCPD), a highly stable monomer with excellent self life, was encapsulated in urea formaldehyde (UF) microcapsules. In this work, UF microcapsules containing DCPD are prepared by in situ polymerization. The objective of this study is to investigate the thermal properties, morphology and capsule diameter which were affected by emulsifier sort and content were investigated. |
