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Miscibility and mechanical properties of an amine‐cured epoxy resin blended with poly(ethylene oxide)
Author(s) -
Larrañaga Maider,
Mondragon Iñaki,
Riccardi Carmen Cristina
Publication year - 2007
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.2184
Subject(s) - miscibility , differential scanning calorimetry , materials science , epoxy , ethylene oxide , curing (chemistry) , dynamic mechanical analysis , fourier transform infrared spectroscopy , crystallinity , composite material , polymer blend , glass transition , oxide , polymer chemistry , polymer , chemical engineering , copolymer , physics , metallurgy , engineering , thermodynamics
Blends composed of diaminodiphenylmethane bisphenol‐A epoxy resin and poly(ethylene oxide) (PEO) were prepared via in situ curing reaction of epoxy in the presence of PEO. The miscibility of the blends before and after curing was established by thermal (differential scanning calorimetry, DSC), microstructural (atomic force microscopy) and dynamic mechanical analysis. Fourier transform infrared spectroscopy indicated that the OH groups developed through cure reactions interact by hydrogen bonding with PEO. After crystallinity analysis by DSC, the interaction parameter was determined through the depression of the equilibrium melting temperature. Mechanical properties of the miscible blends do not show any significant change, although improvement of fracture toughness has been observed with respect to the matrix properties. Copyright © 2006 Society of Chemical Industry