A healable supramolecular polymer blend based on aromatic π-π Stacking and hydrogen-bonding interactions

Stefano Burattini, Barnaby W. Greenland, Daniel Hermida Merino, Wengui Weng, Jonathan Seppala, Howard M. Colquhoun, Wayne Hayes, Michael E. MacKay, Ian W. Hamley, Stuart J. Rowan

Research output: Contribution to journalArticlepeer-review

683 Citations (Scopus)


An elastomeric, healable, supramolecular polymer blend comprising a chain-folding polyimide and a telechelic polyurethane with pyrenyl end groups is compatibilized by aromatic π-π stacking between the π-electron- deficient diimide groups and the π-electron-rich pyrenyl units. This interpolymer interaction is the key to forming a tough, healable, elastomeric material. Variable-temperature FTIR analysis of the bulk material also conclusively demonstrates the presence of hydrogen bonding, which complements the π-π stacking interactions. Variable-temperature SAXS analysis shows that the healable polymeric blend has a nanophase-separated morphology and that the X-ray contrast between the two types of domain increases with increasing temperature, a feature that is repeatable over several heating and cooling cycles. A fractured sample of this material reproducibly regains more than 95% of the tensile modulus, 91% of the elongation to break, and 77% of the modulus of toughness of the pristine material.

Original languageEnglish
Pages (from-to)12051-12058
Number of pages8
JournalJournal of the American Chemical Society
Issue number34
Publication statusPublished - 2010 Sept 1
Externally publishedYes

ASJC Scopus subject areas

  • Chemistry(all)
  • Catalysis
  • Biochemistry
  • Colloid and Surface Chemistry


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