A heterocyclic polyurethane with enhanced self-healing efficiency and outstanding recovery of mechanical properties

Jinsil Kim, Pyong Hwa Hong, Kiwon Choi, Gyeongmin Moon, Jungsoon Kang, Seoyun Lee, Sungkoo Lee, Hyun Wook Jung, Min Jae Ko, Sung Woo Hong

Research output: Contribution to journalArticle

Abstract

A functional polyurethane based on the heterocyclic group was synthesized and its self-healing and mechanical properties were examined. To synthesize a heterocyclic polyurethane, a polyol and a heterocyclic compound with di-hydroxyl groups at both ends were blended and the blended solution was reacted with a crosslinker containing multiple isocyanate groups. The heterocyclic polyurethane demonstrates better self-healing efficiency than the conventional polyurethane with no heterocyclic groups. Furthermore, unlike the conventional self-healing materials, the heterocyclic polyurethane examined in this study shows an outstanding recovery of the mechanical properties after the self-healing process. These results are attributed to the unique supramolecular network resulting fromthe strong hydrogen bonding interaction between the urethane group and the heterocyclic group in the heterocyclic polyurethane matrix.

Original languageEnglish
Article number968
JournalPolymers
Volume12
Issue number4
DOIs
Publication statusPublished - 2020 Apr 1

Keywords

  • Flexible display
  • Heterocyclic
  • Hydrogen bonding interaction
  • Polyurethane
  • Self-healing

ASJC Scopus subject areas

  • Chemistry(all)
  • Polymers and Plastics

Cite this

Kim, J., Hong, P. H., Choi, K., Moon, G., Kang, J., Lee, S., Lee, S., Jung, H. W., Ko, M. J., & Hong, S. W. (2020). A heterocyclic polyurethane with enhanced self-healing efficiency and outstanding recovery of mechanical properties. Polymers, 12(4), [968]. https://doi.org/10.3390/POLYM12040968