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Keywords:

  • copolymers;
  • crosslinking;
  • properties and characterization;
  • rheology;
  • ringopening polymerization

Abstract

Poly(ε-caprolactone) (PCL)-based thermoreversible networks with self-healing properties were prepared through Diels–Alder (DA) and retro-DA reactions. Bis- or Tris-maleimide compounds and a series of copolymer(caprolactone-diene) PCLXFY (X: degree of polymerization and Y: furan-average functionality) with Y between 2.4 and 4.9 were used. The successive sequences of formation and dissociation of polycaprolactone networks via DA and retro-DA reactions were observed repeatedly by dynamic mechanical analyses (DMA) and their gel-temperatures determined. The cross-linking densities, thermal properties, and thermal reversibility of the PCLXFY/multimaleimide polymers have been modulated by the structure and functionalities of the used diene and dienophile moieties. © 2012 Wiley Periodicals, Inc. J. Appl. Polym. Sci., 2013