Mechanical properties of miscible phenolphthalein poly(ether ether ketone)/polysulfone blends

✍ Scribed by Guo Qipeng; Huang Jinyu; Chen Tianlu; Zhang Hongfang; Yang Yuhua; Hou Chunrong; Feng Zhiliu

• Publisher: Society for Plastic Engineers
• Year: 1990
• Tongue: English
• Weight: 402 KB
• Volume: 30
• Category: Article
• ISSN: 0032-3888
• DOI: 10.1002/pen.760300107

✦ Synopsis

Abstract

The properties of miscible phenolphthalein poly(ether ether ketone) (PEK‐C)/polysulfone blends have been measured by dynamic mechanical analysis and tensile testing. The blends are found to have single glass transitions that vary continuously with the composition. The tensile moduli exhibit positive deviations from simple additivity as expected for miscible blends. Remarkably, positive deviations were also observed for tensile strength. Embrittlement, or transition from the brittle to ductile mode of failure, occurs at 50‐30 wt % PEK‐C. These observations suggest that mixing on the segmental level has occurred and that there is enough interaction between the components to retard internal mobility significantly.