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Polyolefin blends
Author(s) -
Kresge E. N.,
Lohse D. J.,
Datta S.
Publication year - 1992
Publication title -
makromolekulare chemie. macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 0258-0322
DOI - 10.1002/masy.19920530117
Subject(s) - polyolefin , materials science , elastomer , tacticity , polypropylene , polymer , copolymer , polymer science , degree of unsaturation , ethylene propylene rubber , composite material , rheology , phase (matter) , morphology (biology) , polymer blend , epdm rubber , modulus , polymer chemistry , polymerization , natural rubber , organic chemistry , chemistry , layer (electronics) , biology , genetics
Polyolefin blends of proper morphology exhibit physical properties from high‐extension, low‐modulus elastomers to high‐modulus tough resins. The morphology is controlled by rheology of the polymers, blending conditions and the use of graft polymer compatibilizers. The graft polymers were synthesized by polymerizing isotactic polypropylene with unsaturation in an ethylene‐propylene‐diene terpolymer. Graft copolymers result in smaller phase sizes and a more stable morphology for the blends. The development of polyolefin blends is reviewed with emphasis on materials with high concentration of elastomer phase.