Abstract
Reexamination of published DSC traces for first and second heatings of atactic polystyrenes with Mn from 2050 to 1.99 × 106, Mw/Mn ∼ 1.1, is discussed in terms of some newly enunciated principles of calorimetry for the liquid state of atactic polymers. These traces were originally stated to reveal only an endothermic peak above Tg, identified with Tll at Mn Tll is indicated.
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