The Morphology, Structure and Melting Behaviour of Cold Crystallized Isotactic Polystyrene

• Published in: Macromolecular research Vol. 14; no. 6; pp. 588 - 595
• Main Authors: Marega, Carla, Causin, Valerio, Marigo, Antonio
• Format: Journal Article
• Language: Korean
• Published: 한국고분자학회 01-12-2006
• Subjects: 고분자공학; crystallization behaviour; multiple endotherms; wide angle X-ray diffraction; small angle X-ray scattering; isotactic polystyrene; differential scanning calorimetry
• ISSN: 1598-5032; 2092-7673

The morphology, structure and melting behaviour of cold-crystallized isotactic polystyrene (iPS) were studied by differential scanning calorimetry (DSC), wide angle X-ray diffraction (WAXD) and small angle X-ray scattering (SAXS). The polymer was found to crystallize according to the dual-lamellar stack model. The two populations of lamellae, along with a melting-recrystallization phenomenon, determined the appearance of multiple melting peaks in DSC traces. The annealing peak was attributed to the relaxation of a rigid amorphous phase, rather than to the melting of crystalline material.