It should be mentioned that characteristic phase transition temperatures
can be affected by the degree of polymer branching but also by
impurities or additives as well as by the particle size (Menczel and
Prime, 2008). A slight shift can be seen for instance for PES in combination
with PA which were only available as fibers, and were not further
grindable or shreddable as such. In the present case peak temperatures
shifted from 253 °C to 261 °C due to their different particle size and
shape. As a consequence, care was taken to reduce the pure test polymer