Influence of a selected hardener on the phase separation in epoxy/thermoplastic polymer blends

Low molecular weight thermoplastic PES : PEES (polyethersulfone : polyetherethersulfone) copolymer, bearing amine reactive end groups, was blended with a diglycidyl ether of bisphenol A (EPON828) epoxy resins. Two different curing agents, MDEA [methylene bis(2,6‐diethylaniline)] and 3,3′DDS (3,3′‐di...

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Bibliographic Details
Published in:Journal of applied polymer science 2004-10, Vol.94 (1), p.361-371
Main Authors: Blanco, I., Cicala, G., Motta, O., Recca, A.
Format: Article
Language:English
Subjects:
Applied sciences
differential scanning calorimetry (DSC)
epoxy resin
Exact sciences and technology
interpenetrating networks (IPN)
Physicochemistry of polymers
Polymer industry, paints, wood
Technology of polymers
thermoplastics
viscoelastic properties
viscoelastic properties, differential scanning calorimetry (DSC)
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Summary:Low molecular weight thermoplastic PES : PEES (polyethersulfone : polyetherethersulfone) copolymer, bearing amine reactive end groups, was blended with a diglycidyl ether of bisphenol A (EPON828) epoxy resins. Two different curing agents, MDEA [methylene bis(2,6‐diethylaniline)] and 3,3′DDS (3,3′‐diamino diphenyl sulfone), were used separately to compare flow behavior, curing kinetics, and morphology of the final samples. Emphasis was placed on different phase behaviors of the cured systems, attributed to different solubilities of thermoplastic in the thermoset system as well as to the reactivity of the two curing agents. The presence of PES : PEES was shown not to affect the reaction rate of epoxy blends with respect to the neat resin by the reactive nature of its end groups. © 2004 Wiley Periodicals, Inc. J Appl Polym Sci 94: 361–371, 2004
ISSN:0021-8995
1097-4628
DOI:10.1002/app.20927