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Impact toughened blends of styrene‐maleic anhydride copolymer, polyethylene, and ethylene‐propylene copolymer
Author(s) -
Datta S.,
Dharmarajan N.,
Ver Strate G.,
Ban L.
Publication year - 1993
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.760331202
Subject(s) - materials science , maleic anhydride , copolymer , high density polyethylene , polyethylene , polyolefin , composite material , compatibilization , polymer blend , amine gas treating , styrene , polymer chemistry , sma* , melt flow index , polymer , organic chemistry , chemistry , mathematics , layer (electronics) , combinatorics
Impact‐toughened, compatibilized binary blends of styrene‐maleic anhydride (SMA) copolymer/amine functionalized ethylene‐propylene (amine‐EP) polymer and ternary blends consisting of SMA/amine‐EP/high density polyethylene (HDPE) are described. In both blends 0.02 to 4 μm range rubbery inclusions, which toughen the SMA matrix, are formed. SMA sub‐inclusions exist in the amine‐EP phase. In the ternary blend substantially all of the polyethylene is embedded in the EP phase. Compatibilization of the SMA and the commingled polyolefin phase is promoted by a graft copolymer formed by the reaction of amine groups on the EP with the maleic anhydride groups on the SMA. We describe the morphology, rheology, aging characteristics and impact properties of these blends. SMA modification by SMA‐g‐(amine‐EP) polymers formed in situ in the melt, with HDPE, has not been previously reported.