Glass transition broadening via nanofiller-contiguous polymer network in aromatic thermosetting copolyester nanocomposites

Mete Bakir, Jacob L. Meyer, Andre Sutrisno, James Economy, Iwona Jasiuk

Research output: Contribution to journalArticlepeer-review


The glass transition is a genuine imprint of temperature-dependent structural relaxation dynamics of backbone chains in amorphous polymers, which can also reflect features of chemical transformations induced in macromolecular architectures. Optimization of thermophysical properties of polymer nanocomposites beyond the state of the art is contingent on strong interfacial bonding between nanofiller particles and host polymer matrix chains that accordingly modifies glass transition characteristics. Contemporary polymer nanocomposite configurations have demonstrated only marginal glass transition temperature shifts utilizing conventional polymer matrix and functionalized nanofiller combinations. We present nanofiller-contiguous polymer network with aromatic thermosetting copolyester nanocomposites in which carbon nanofillers covalently conjugate with cure advancing crosslinked backbone chains through functional end-groups of constituent precursor oligomers upon an in situ polymerization reaction. Via thoroughly transformed backbone chain configuration, the polymer nanocomposites demonstrate unprecedented glass transition peak broadening by about 100 °C along with significant temperature upshift of around 80 °C.

Original languageEnglish (US)
Pages (from-to)1595-1603
Number of pages9
JournalJournal of Polymer Science, Part B: Polymer Physics
Issue number24
StatePublished - Dec 15 2018


  • aromatic thermosetting copolyester
  • glass transition temperature
  • interfacial covalent conjugation
  • nanocomposites
  • nanofiller-contiguous polymer network

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Physical and Theoretical Chemistry
  • Polymers and Plastics
  • Materials Chemistry


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