Macromolecular Research

The Polymer Society of Korea (한국고분자학회)
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The Morphology, Structure and Melting Behaviour of Cold Crystallized Isotactic Polystyrene

  • Marega, Carla (Diapartimento di Scienze Chimiche, Universita di Padova, via Marzolo) ;
  • Causin, Valerio (Diapartimento di Scienze Chimiche, Universita di Padova, via Marzolo) ;
  • Marigo, Antonio (Diapartimento di Scienze Chimiche, Universita di Padova, via Marzolo)
  • Published : 2006.12.31
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Abstract

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.

Keywords

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