Abstract
Carbon nanotubes (CNT) have been extensively studied, and special attention has been given to their introduction in epoxy matrices, for further reinforcement of carbon fibre reinforced composites. However, the obtained improvements are highly dependent on the level of CNT dispersion and distribution. In this work, we report the use of block copolymers (BCPs) as a solution to provide enhanced compatibility of the CNT in an epoxy-based matrix and as means to provide them further nanostructuration. Studied BCPs were especially formulated for epoxy matrices, being one of them customised to also have strong compatibility for CNT. BCPs were added to CNT without introduction of additional solvents. Different formulations were studied and the CNT dispersion, distribution and interaction with matrix were evaluated by rheology, electron microscopy and dynamic mechanical analysis. The results suggest that the customised BCP can have a significant improvement in the dispersion of the CNT, on the adhesion between the polymeric matrix and the CNT and can provide a mean for nanostructuration.
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