Solvent-induced crystallisation of compatible poly(styrene-co-acrylonitrile) and poly(vinyl chloride-co-vinyl acetate) blends

✍ Scribed by Gaurab Das; A.N. Banerjee

• Publisher: Elsevier Science
• Year: 1996
• Tongue: English
• Weight: 397 KB
• Volume: 32
• Category: Article
• ISSN: 0014-3057
• DOI: 10.1016/0014-3057(96)00023-7

✦ Synopsis

Ahats&-The inIluence of solvent on the development of crystalhnity in a compatible poly(styrene-coacrylonitrile) (SAN) and poly(vinyl chloride-co-vinyl acetate) (VYHH) blend has been studied by differential scanning calorimetry (DSC), optical microscopy, Fourier transform infrared spectroscopy (FTIR), and a wide angle X-ray diffraction method (WAXD), conSrming the presence of crystalhnity in the blend. The low temperature casting of the blends developed a considerable amount of solvent-induced crystalhnity in one component of the blend, whereas the higher temperature casting of the blends and also the coprecipitated blends showed no sign of development of crystallinity in the blend. So, solvent retention during film formation was responsible for the observed crystallinity in one component of the blend.