Phase behavior in thermotropic liquid crystalline polymer and polyarylethersulfone blends

✍ Scribed by Wei Li; Xiaoming Jin; Guang Li; Bingzheng Jiang

• Publisher: Elsevier Science
• Year: 1994
• Tongue: English
• Weight: 724 KB
• Volume: 30
• Category: Article
• ISSN: 0014-3057
• DOI: 10.1016/0014-3057(94)90294-1

✦ Synopsis

An experimental study of the phase morphology and miscibility of binary blends of polyarylethersulfone (PES) and a liquid crystalline polymer (LCP) ofp-oxybenzoate and ethylene terephthalate units in a 60/40 molar ratio (PET-60PHB) is described. Blends were prepared by solution coprecipitated and compression-molded methods. Differential scanning calorimetry (DSC) and dynamic viscoelastometer (DDV) indicated the blends are partially compatible, because two glass transition temperatures corresponding to the two components were observed. These findings were confirmed by scanning electron microscopy. Phase inversion in blends was observed, when the blends contained 50 wt% or more of the LCP.