Morphology and mechanical properties of nanostructured thermoset/block copolymer blends with carbon nanoparticles

Here we report the effect of multi-walled carbon nanotubes (MWCNTs) and thermally reduced graphene (TRG) on the miscibility, morphology and final properties of nanostructured epoxy resin with an amphiphilic poly(ethylene oxide)-poly(propylene oxide)-poly(ethylene oxide) (PEO-PPO-PEO) triblock copoly...

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Bibliographic Details
Published in:Composites. Part A, Applied science and manufacturing Applied science and manufacturing, 2015-04, Vol.71, p.136-143
Main Authors: Martin-Gallego, Mario, Verdejo, Raquel, Gestos, Adrian, Lopez-Manchado, Miguel A., Guo, Qipeng
Format: Article
Language:English
Subjects:
A. Nano-structures
A. Polymer-matrix composites (PMCs)
B. Fracture toughness
Block copolymers
Copolymers
Morphology
Nanoparticles
Nanostructure
Polymer blends
Polymers
Resins
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Summary:Here we report the effect of multi-walled carbon nanotubes (MWCNTs) and thermally reduced graphene (TRG) on the miscibility, morphology and final properties of nanostructured epoxy resin with an amphiphilic poly(ethylene oxide)-poly(propylene oxide)-poly(ethylene oxide) (PEO-PPO-PEO) triblock copolymer. The addition of nanoparticles did not have any influence on the miscibility of PEO-PPO-PEO copolymer in the resin. However, MWCNTs and TRG reduced the degree of crystallinity of the PEO-rich microphases in the blends above 10wt.% of copolymer while they did not change the phase morphology at the nanoscale, where PPO spherical domains of 20–30nm were found in all the samples studied. A synergic effect between the self-assembled nanostructure and the nanoparticles on the toughness of the cured resin was observed. In addition, the nanoparticles minimized the negative effect of the copolymer on the elastic modulus and glass transition temperature in the resin.
ISSN:1359-835X
1878-5840
DOI:10.1016/j.compositesa.2015.01.010