| 초록 |
A new heterocyclic elastomer based on cage-shaped adamantane (hEA) is synthesized and its self-healing and mechanical properties are characterized in this study. To synthesize hEA, acrylate-based polyol, adamantane derivative, and 2,5-bishydroxymethyl tetrahydrofuran are blended and the blend is reacted with crosslinker with multiple isocyanate groups. Acrylate-based polyol and crosslinker are reacted to prepare a conventional elastomer (cE) as a reference. Interestingly, the mechanical properties of hEA with adamantane groups are increased in both in-plane and out-plane directions compared with those of cE. In addition, hEA shows more outstanding self-healing performances than cE owing to the supramolecular network resulting from the strong hydrogen bonding interaction between heterocyclic groups and urethane groups. These results demonstrate that cE can achieve both excellent self-healability and mechanical properties by introducing cage-like structure and heterocyclic moiety. |
