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Interpenetrating polymer network structured thermosets prepared from epoxidized soybean oil/diglycidyl ether of bisphenol A
Author(s) -
Tan Seah Guan,
Ahmad Zulkifli,
Chow Wen Shyang
Publication year - 2014
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/pi.4501
Subject(s) - diglycidyl ether , thermosetting polymer , materials science , epoxidized soybean oil , epoxy , differential scanning calorimetry , thermal stability , glass transition , thermogravimetric analysis , dynamic mechanical analysis , ultimate tensile strength , fracture toughness , composite material , bisphenol a , toughness , polymer , organic chemistry , chemistry , raw material , physics , thermodynamics
Epoxidized soybean oil ( ESO )/diglycidyl ether of bisphenol A ( DGEBA ) in various blend ratios (i.e. 100/0, 90/10, 80/20, 70/30, 60/40, 50/50) was thermally cured using methylhexahydrophthalic anhydride in the presence of 2‐ethyl‐4‐methylimidazole catalyst. The tensile properties and fracture toughness of the ESO / DGEBA thermoset blends were determined. Thermal properties of the blends were characterized using dynamic mechanical analysis, differential scanning calorimetry and thermogravimetric analysis. Blending of ESO and DGEBA gave synergistic effects on the modulus, strength, glass transition temperature and thermal stability. However, the fracture toughness and elongation at break of ESO / DGEBA blends are lower than those of ESO , as expected. The enhancement in certain mechanical and thermal properties of ESO / DGEBA can be associated with the crosslink density, gel content and possible interpenetrating network of the resulting thermoset blends. © 2013 Society of Chemical Industry