PERSONAL DE APOYO
CAPPELLETTI Ariel Leonardo
artículos
Título:
Generation of nanocomposite based on (PMMA-b-PCL)-grafted Fe2O3 nanoparticles and PS-b-PCL copolymer
Autor/es:
IRATI BARANDIARAN; A.L. CAPPELLETTI; MIRIAM C. STRUMIA; ARANTXA ECEIZA; GALDER KORTABERRIA
Revista:
EUROPEAN POLYMER JOURNAL
Editorial:
PERGAMON-ELSEVIER SCIENCE LTD
Referencias:
Lugar: Amsterdam; Año: 2014 vol. 58 p. 226 - 232
ISSN:
0014-3057
Resumen:
The aim of this work is to obtain a good dispersion of Fe2O3 magnetic nanoparticles into aPS-b-PCL diblock copolymer. For this purpose nanoparticles have been modified in theirsurface by grafting a PMMA-b-PCL block copolymer into their surface, after being silanized.The grafting process has been probed by infrared spectroscopy, thermogravimetric analysisand transmission electron microscopy. Once modified, nanoparticles have been dispersedinto the block copolymer. Nanostructured lamellar morphology of the block copolymerafter annealing process has not been affected by the presence of nanoparticles, as has beenprobed by atomic force microscopy. Furthermore, their dispersion into the matrix hasbeen improved when compared with unmodified nanoparticles. Though during modificationprocess small aggregates of nanoparticles surrounded by PMMA-b-PCL brushes havebeen formed, morphology has not been altered or disrupted. Modified nanoparticles havebeen mostly placed at the interfaces among PS and PCL domains.
