Development and Characterization of Supercooled Polyethylene Naphthalate

The utilization of undercooled or supercooled polymers presents a promising approach for the creation single-polymer composites (SPCs), applicable not only to compaction processing but also extrusion, injection molding, and 3D printing techniques. This study focuses on development characterization polyethylene naphthalate (PEN) through differential scanning calorimetry (DSC) rheological measurements. By employing predetermined conditions, supercooling degree 50 ˚C PEN was achieved. impact maximum heating temperature, cooling rate, shear rate examined, revealing that higher degrees can be attained by increasing these factors. Additionally, flow behavior polymer melts at various temperatures analyzed. state exhibited remarkable stability minimum duration half an hour exceeding 250 ˚C.