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제120회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Self-healable Norbornene-based Supramolecular Polymer Gels by Metal-Terpyridine Interaction

2017년 8월 24일 11시 07분 23초
POLY.P-26 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
10월 20일 (금요일) 13:00~14:30
Polymer Chemistry
저자 및
Jookyeong Lee, Changsik Song*, Dong Cheol Jeong, Hwi Hyun Moon1
Department of Chemistry, Sungkyunkwan University, Korea
1Sungkyunkwan University, Korea
Self-healing is an interesting property for prolonging the lifetime of materials, but the self-healing behavior is rarely observed and a spontaneous healing capability is especially uncommon. The repair process usually requires additional energy such as heat, light and specific solvent at the damaged area. In this study, we investigated self-healing property of norbornene-based polymers using self-assembly by metal-terpyridine interaction without any stimulus. The polymers were easily synthesized by ring-opening metathesis polymerization (ROMP) using Grubb’s 2nd generation catalyst. To control the self-healing property, polymers with different ratios of norbornene-terpyridine (NB-tpy) and norbornene-ethylhexyl (NB-eh) were prepared. The metallogels were easily generated by simply mixing the polymer solution and metal ions together. When various kinds of metal ions (Fe2+,Zn2+,Co2+, or Ni2+) are added to the polymer solution, we observed that the larger the binding constant between terpyridine and metal ion, the less amount of metal ions was necessary to form gels. Furthermore, we confirmed that the cutted gel can be self-healed in a short time (about 10-15 min.) without any additives.