Magnetoelasticity: structured elastomers of ferromagnetic Ni0 and superparamagnetic Fe3O4 in PDMS, polymerized in presence of magnetic field.

P. S. ANTONEL; R. A. LANDA; J. L. MIETTA; O. E. PÉREZ; G. A. JORGE; R. M. NEGRI

Córdoba

Congreso; XVII Congreso Argentino de Fisicoquímica y Química Inorgánica; 2011

  Introduction: The preparation of materials with anisotropic properties modulated by external fields is of high relevance for the design of electronic devices. We explore the modulation of both elastic and magnetic properties in dispersions of magnetic nanoparticles in an elastomer matrix, using superparamagnetic and ferromagnetic nanoparticles, in the context of developing actuators and sensors (1). Aims - Synthesis of magnetic nanoparticles with different magnetic properties: superparamagnetism (Fe3O4) and ferromagnetism (Ni0). - Preparation of structured elastomeric composites of the nanoparticles in polydimethysiloxane (PDMS), by curing the composite in presence of a magnetic field. - Determination of the elastic and magnetic properties of the cured composites as function of the orientation with respect to the magnetic field applied during curing.