Abstract
We present some recent results on the SAXS and SANS investigations of the magnetic elastomers. Samples were obtained by polymerizing dimethylsiloxane with Fe3O4 ferrofluid in a magnetic field and without magnetic field and characterized by XRD, SANS and SAXS. The SAXS maximum at large angles, obtained from magnetic elastomers, was fitted by using a
Pseudo-Voigt function. It was found that the Fe3O4 particles lead to a significant change of the local structure of elastomer, meaning the decrease of the quasi-crystalline phase and the micro-strains into the matrix. The average particle size obtained from SANS measurements agrees well with the average particle size determined by XRD and SAXS analysis. The splitting of the SANS intensity owing to an additional scattering in zero field reflects the existence of magnetic correlations inside the Q region of 0.005 Å -1< Q < 0.02 Å -1.
