Syndiotactic Polystyrene Films: Orientation and Structural Changes Upon Biaxial Drawing

Authors

  • Paola Rizzo,

    Corresponding author
    1. Dipartimento di Chimica e Biologia and INSTM Research Unit, Università degli Studi di Salerno, Via Ponte don Melillo, 84084, Fisciano, Italy
    • Dipartimento di Chimica e Biologia and INSTM Research Unit, Università degli Studi di Salerno, Via Ponte don Melillo, 84084, Fisciano, Italy.
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  • Alexandra R. Albunia

    1. Dipartimento di Chimica e Biologia and INSTM Research Unit, Università degli Studi di Salerno, Via Ponte don Melillo, 84084, Fisciano, Italy
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Abstract

The orientation developed in biaxially stretched sPS (BoSPS) films before and after crystallization is studied using XRD and FT-IR. On BoSPS films, thermal treatment induces crystallization into the trans-planar α-crystalline phase and a “planar” crystalline phase orientation is observed. In contrast, solvent treatments on BoSPS films induce crystallization into the helical δ-crystalline phase, representing the first example of a polymeric framework that is able to absorb low-molecular-mass guest molecules from water and air at low activities and that is promising for applications in chemical separation or water purification applications; in this case a high degree of a//c// “uniplanar” crystalline phase orientation is observed.

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