| 초록 |
Self-healing polymers (SHPs) can repair damage (scratches, cracks) on the application of a stimulus, and provide extended application lifetime and reduced maintenance cost. One approach to prepare SHPs is the use of dynamic interactions, which may be supramolecular (hydrogen bonding, ionic interactions, π-π stacking, metal-ligand coordination) or dynamic covalent bonds. These structurally dynamic polymers show rearrangement in their structure in response to a stimulus. The healing process in the polymers is externally stimulated by heat, water or light. In this study, we found that supramolecular hydrogen bonded elastomer, which can be prepared by crosslinking of semicrystalline maleated polyolefin elastomer (mPOE) with 3-amino-1,2,4-triazole (ATA), can exhibit a thermal healing properties. Further, ATA crosslinked elastomer/octadecylamine modified graphene oxide nanocomposites show the healing effects under near infrared (NIR) irradiation along with enhanced mechanical properties of the elastomer matrix. |
