Complete miscibility of ternary aryl polyesters demonstrating a new criterion and horizon for miscibility characterization

E. M. Woo, Yu Hsiao Kuo

Research output: Contribution to journalArticlepeer-review

21 Citations (Scopus)

Abstract

A ternary miscible blend system comprising only crystallizable aryl polyesters [poly(ethylene terephthalate), poly(trimethylene terephthalate), and poly(butylene terepthalate)] was characterized with the criteria of thermal analyses, microscopy, and X-ray characterizations. The reported ternary miscibility (in the quenched amorphous state of blends of the three aryl polyesters) was truly physical and under the condition of no chemical transesterifications; this justified that transesterification was not a necessary condition for miscibility in polyester blends in this case. This study further proposed and tested a novel concept of a new criterion for miscibility characterization for polymer blends of only crystallizable polymers. A single composition-dependent cold-crystallization-temperature (Tcc) peak in blends of only semicrystalline polymers was taken as an indication of an intimate mixing state of miscibility. The theoretical background for establishing the single composition-dependent Tcc peak as a valid miscibility criterion for crystallizable polymer blends was examined.

Original languageEnglish
Pages (from-to)2394-2404
Number of pages11
JournalJournal of Polymer Science, Part B: Polymer Physics
Volume41
Issue number20
DOIs
Publication statusPublished - 2003 Oct 15

All Science Journal Classification (ASJC) codes

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

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