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Toughening of Epoxy Resin by Methyl Methacrylate/2‐Ethylhexyl Acrylate Copolymers: The Effect of Copolymer Composition
Author(s) -
Zaioncz Soraia,
Silva Adriana A.,
Sirqueira Alex S.,
Soares Bluma G.
Publication year - 2007
Publication title -
macromolecular materials and engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.913
H-Index - 96
eISSN - 1439-2054
pISSN - 1438-7492
DOI - 10.1002/mame.200700227
Subject(s) - copolymer , materials science , epoxy , glass transition , ultimate tensile strength , izod impact strength test , methyl methacrylate , composite material , molar mass , acrylate , butyl acrylate , methacrylate , dynamic mechanical analysis , impact resistance , toughening , composition (language) , morphology (biology) , polymer , polymer chemistry , toughness , linguistics , philosophy , genetics , biology
MMA‐EHA copolymers with different compositions and with a low amount of AA were synthesized and used as impact modifier for epoxy networks. The effect of the copolymers on the tensile and dynamic mechanical properties as well as impact resistance of the epoxy network was evaluated. The addition of 10 phr of low‐molar‐mass MMA‐EHA copolymer with defined composition resulted in a significant increase in impact resistance without any significant changes in the tensile strength, modulus, and glass transition temperature. The morphology of the modified epoxy network depends upon the copolymer composition.