Resumen:
he aim of this work is to obtain a good dispersion of Fe2O3 magnetic nanoparticles into a
PS-b-PCL diblock copolymer. For this purpose nanoparticles have been modified in their
surface by grafting a PMMA-b-PCL block copolymer into their surface, after being silanized.
The grafting process has been probed by infrared spectroscopy, thermogravimetric analysis
and transmission electron microscopy. Once modified, nanoparticles have been dispersed
into the block copolymer. Nanostructured lamellar morphology of the block copolymer
after annealing process has not been affected by the presence of nanoparticles, as has been
probed by atomic force microscopy. Furthermore, their dispersion into the matrix has
been improved when compared with unmodified nanoparticles. Though during modification
process small aggregates of nanoparticles surrounded by PMMA-b-PCL brushes have
been formed, morphology has not been altered or disrupted. Modified nanoparticles have
been mostly placed at the in