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versión impresa ISSN 0104-1428
BEZERRA, Daniella C. et al. Synthesis of NiFe2O4 ferrite and its incorporation in nylon 6: Part 1: structural characterization by xrd and sem of ferrite powders and its composites. Polímeros [online]. 2010, vol.20, n.5, pp.389-394. Epub 26-Nov-2010. ISSN 0104-1428. http://dx.doi.org/10.1590/S0104-14282010005000053.
Ferrites normally absorb electromagnetic radiation, being versatile in that they can be manufactured in different geometries and used as polycrystalline ferrites (sintered body) or composites of ferrite (with addition of the powder to an appropriate matrix). On the other hand, nylon 6 is an attractive polymer for engineering applications due to the combination of properties such as dimensional stability, good impact strength without notch indentation and excellent chemical resistance. The aim of this paper was to synthesize ferrite (NiFe2O4) powders and to evaluate their addition in concentrations of 10, 30, 50 and 60 wt% into a nylon 6 polymer matrix using a Haake Blücher mixer. The powders and the composites were characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM). The X-ray diffractograms showed characteristic peaks of nylon 6 and ferrite. With SEM, large clusters were observed for the concentration of 60%, with a large amount of pores. For the 10% concentration, the particles became more dispersed with less clusters and less pores in the composite.
Palabras clave : Composites; NiFe2O4 ferrite; nylon 6.