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Morphology and deformation of compatibilized polystyrene low density polyethylene blends
Author(s) -
Xu ShiAi,
Xie JingWei,
Jiang Ming
Publication year - 1999
Publication title -
polymer international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.592
H-Index - 105
eISSN - 1097-0126
pISSN - 0959-8103
DOI - 10.1002/(sici)1097-0126(199911)48:11<1121::aid-pi273>3.0.co;2-a
Subject(s) - materials science , polystyrene , composite material , ultimate tensile strength , scanning electron microscope , copolymer , morphology (biology) , low density polyethylene , polyethylene , polymer blend , toughness , phase (matter) , fractography , deformation (meteorology) , polymer , chemistry , genetics , organic chemistry , biology
This investigation deals with the morphology and tensile behavior of polystyrene/low density polyethylene blends compatibilized by hydrogenated styrene‐b‐butadiene‐b‐styrene triblock copolymer. The stress‐strain measurements indicate that blends with excellent toughness were achieved, due to the compatibilizing role of the triblock copolymer in the system. The morphology of the blends was observed by scanning electron microscopy (SEM), and the results show that the state of polystyrene changes from continuous phase to dispersed phase with increasing LDPE content. The correlation between mechanical properties and morphology is discussed. The morphologies of the tensile bars were also examined by SEM, and the deformation mechanisms of the blend were further analysed according to fractography. © 1999 Society of Chemical Industry