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Influence of the Copolymer Content on the Miscibility, Phase Behaviour and Morphology of a DGEBA/Polystyrene/Styrene-co-Maleic Anhydride Ternary Blend by Rosa García-Lopera; Juan E. Figueruelo; Isidro S. Monzó; Concepción Abad; Agustín Campos is a Materials Science article available to read on EtoBox.

What is Influence of the Copolymer Content on the Miscibility, Phase Behaviour and Morphology of a DGEBA/Polystyrene/Styrene-co-Maleic Anhydride Ternary Blend about?

## Abstract The miscibility, phase behaviour and morphology of ternary systems, formed by a DGEBA‐based epoxy resin, polystyrene (PS) and styrene‐__co__‐maleic anhydride (SMA) copolymers have been investigated through phase diagrams. The analysis has been done in the absence and in the presence of 4,4′‐methylene bis(2,6‐diethyl aniline) (MDEA) as curing agent. In both cases, the influence of the copolymer content on blend compatibility, has been discussed. The results show that miscibility is enhanced by the presence of SMA copolymer in the blend and as the MA content in the copolymer is increased (from 7 to 14 wt.‐%), due to specific H‐bonding interactions between the H‐donor hydroxyl groups on the epoxy resin and the H‐acceptor carbonyl groups in the copolymer. Experimental results have been fitted with a thermodynamic model based on the classical Flory–Huggins lattice theory, by using interaction parameters, depending both on temperature and composition. The presence of MDEA cross‐linking agent, yielded microphase‐separated materials. The morphological evolution of this epoxy networks, with and without PS + SMA thermoplastic modifier, has been examined by scanning electron micro

Who reads Influence of the Copolymer Content on the Miscibility, Phase Behaviour and Morphology of a DGEBA/Polystyrene/Styrene-co-Maleic Anhydride Ternary Blend?

Author

Rosa García-Lopera; Juan E. Figueruelo; Isidro S. Monzó; Concepción Abad; Agustín Campos

Publisher

John Wiley and Sons; Wiley (John Wiley & Sons); John Wiley & Sons Ltd.; Wiley (ISSN 1022-1352)

Published

2009

Language

EN

Field

Materials Science (Physical Sciences)