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.
|頁（從 - 到）||2394-2404|
|期刊||Journal of Polymer Science, Part B: Polymer Physics|
|出版狀態||Published - 2003 10月 15|
All Science Journal Classification (ASJC) codes