Phase Behavior of Poly(butylene terephthalate)/Polyarylate Blends

J. P. Runt, X. Zhang, D. M. Miley, K. P. Gallagher, A. Zhang

Research output: Contribution to journalArticlepeer-review

57 Scopus citations


In the present paper, we explore the amorphous phase behavior of poly(butylene terephthalate) (PBT)/polyarylate (PAr) blends, primarily using dielectric spectroscopy. Small-angle X-ray scattering experiments show clearly that the PAr resides in the interlamellar zones. We observe two dielectric relaxations associated with long-range motion for blends in which PBT has crystallized. Following from recent research on order-disorder interphases in crystalline blends, we tentatively assign the low-temperature transition to the presence of a crystal-amorphous interphase and the high-temperature relaxation to an unconstrained (mixed) amorphous phase.

Original languageEnglish (US)
Pages (from-to)3902-3905
Number of pages4
Issue number15
StatePublished - Jul 1 1992

All Science Journal Classification (ASJC) codes

  • Organic Chemistry
  • Polymers and Plastics
  • Inorganic Chemistry
  • Materials Chemistry


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