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Mechanical properties of miscible phenolphthalein poly(ether ether ketone)/polysulfone blends
Author(s) -
Qipeng Guo,
Jinyu Huang,
Tianlu Chen,
Hongfang Zhang,
Yuhua Yang,
Chunrong Hou,
Zhiliu Feng
Publication year - 1990
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.760300107
Subject(s) - materials science , phenolphthalein , polysulfone , ether , ultimate tensile strength , glass transition , embrittlement , composite material , brittleness , organic chemistry , polymer , chemistry
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.