10/29/2010
Reactive blending as a tool for obtaining poly(ethylene terephthalate)-based engineering materials with tailored properties 
(4340-4350) Polymer 51 #19 (2010)
Safaour et al  studied the structure and properties of blends of poly(ethylene terephthalate) (PET) with poly(trimethylene terephthalate) (PTT) at PTT concentration ≤30 wt.%, obtained with three different methods: from solution, melt extrusion, and direct spinning.  All blends show glass transition temperature at values determined by composition, and crystallization properties also dependent on the preparation method.  Reactive blending of PET/PTT mixtures occurring during preparation is a versatile route for obtainment of engineering materials with good mechanical properties, high crystallinity, glass transition temperature lower than that of PET, and melting temperature that may be controlled by the processing conditions.  (RDC 12/19/2010)