Failure of time-temperature superposition in dilute miscible polymer blends

Jeffrey C. Haley, Timothy P. Lodge

Research output: Contribution to journalArticlepeer-review

31 Scopus citations


The dynamic viscosity for miscible blends of 1,4-polyisoprene and poly(vinyl ethylene) (PVE) at the extremes of composition (1% tracer in 99% matrix) has been measured as a function of temperature. Time-temperature superposition failure is observed in these tracer blends. This observation indicates that intramolecular contributions are crucial in defining the local environment experienced by a polymer segment, as anticipated by self-concentration models. The temperature dependence of the dynamics of the PVE tracer has been extracted, and compared with the model of Lodge and McLeish. The self-concentration effect was found to be even stronger than predicted.

Original languageEnglish (US)
Pages (from-to)793-801
Number of pages9
JournalColloid and Polymer Science
Issue number8
StatePublished - Jun 2004


  • 1,4-Polyisoprene
  • Dynamic viscosity
  • Poly(vinyl ethylene)
  • Self-concentration models
  • Time-temperature superposition failure


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