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Structural properties and impact fracture behavior of injection molded blends of liquid crystalline copolyester and modified poly(phenylene oxide)
Author(s) -
Tjong S. C.,
Shen J. S.,
Liu S. L.
Publication year - 1996
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.10467
Subject(s) - materials science , charpy impact test , thermotropic crystal , composite material , phenylene , copolyester , izod impact strength test , ultimate tensile strength , morphology (biology) , polymer blend , polymer , liquid crystalline , copolymer , polyester , genetics , biology
Blends of a thermotropic liquid crystalline polymer (LCP) with modified poly (phenylene oxide) (PPO) were injection molded. The morphology, tensile properties and dynamic mechanical behavior of the blends have been studied as a function of LCP content. Furthermore, the impact performance of these blends has been investigated by the instrumented Izod and Charpy falling weight tests. The critical strain energy release rate (G IC ) of the blends were determined and the G IC values were found to be dependent on the LCP content. The results are discussed and explained in terms of materials morphology.