Journal
MACROMOLECULAR RESEARCH
Volume 14, Issue 6, Pages 588-595Publisher
POLYMER SOC KOREA
DOI: 10.1007/BF03218729
Keywords
isotactic polystyrene; crystallization behaviour; small angle X-ray scattering; wide angle X-ray diffraction; differential scanning calorimetry; multiple endotherms
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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.
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