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Rubber‐toughening epoxy thermosets with epoxidized crambe oil
Author(s) -
Raghavachar R.,
Letasi R. J.,
Kola P. V.,
Chen Z.,
Massingill J. L.
Publication year - 1999
Publication title -
journal of the american oil chemists' society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.512
H-Index - 117
eISSN - 1558-9331
pISSN - 0003-021X
DOI - 10.1007/s11746-999-0033-3
Subject(s) - thermosetting polymer , crambe , epoxy , epoxidized soybean oil , materials science , toughening , toughness , fracture toughness , composite material , natural rubber , glass transition , polymer , organic chemistry , chemistry , raw material , botany , biology
Epoxidized crambe oil and rapeseed oil were synthesized by reaction of the oils with m ‐chloroperoxybenzoic acid. Formulating the neat epoxidized oils with epoxy‐amine systems gave two‐phase thermosets with epoxidized crambe oil, but not with epoxidized rapeseed oil. Glass transition temperature, mechanical properties, and fracture toughness of the epoxidized crambe oil thermoset specimen were measured. Fracture toughness values of the epoxy thermosets were increased approximately 100% by both 5 and 10% epoxidized crambe oil. Glass transition temperature and mechanical properties were affected only modestly.