Syndiotactic Polystyrene Films: Orientation and Structural Changes Upon Biaxial Drawing

✍ Scribed by Paola Rizzo; Alexandra R. Albunia

• Publisher: John Wiley and Sons
• Year: 2011
• Tongue: English
• Weight: 425 KB
• Volume: 212
• Category: Article
• ISSN: 1022-1352
• DOI: 10.1002/macp.201100036

✦ Synopsis

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. magnified image