20 / 25
Page 64
Journal of Material Sciences
ISSN: 2321-6212
I n t e r n a t i o n a l C o n f e r e n c e o n
Metal, Mining and
Magnetic Materials
N o v e m b e r 0 1 - 0 2 , 2 0 1 8
P a r i s , F r a n c e
Metal and Magnetism 2018
Smart magnetic bulk polymer nanocomposites: from elaboration
to investigation of multiscale mechanical properties under
applied magnetic field
Alain Ponton
1
, Alberto Varela
1
, Williams Brett
1
,
Fayna Mammeri
2
and Souad Ammar
2
1
Laboratory Matter and Complex System- Paris Diderot University France
2
ITODYS-Paris Diderot University, France
W
e have elaborated smart bulk biopolymer composites derived from an organic matrix with surface modified magnetic
nanoparticles and developed an extensive methodology for an experimental study of their mechanical and structural
properties at different scales. Our strategy is based on the combination of the magnetic properties of superparamagnetic
nanoparticles synthesized by polyol process and then functionalized by bi-functional ligands and the viscoelastic properties
of biopolymer matrix. The multiscale thermo-mechanical properties of these new smart composites have been investigated by
magneto-opto-rheology and photo acoustics techniques (Brillouin spectroscopy). Enhancement of viscosity at low shear rate
and viscoelastic moduli in the linear viscoelastic domain has been clearly evidenced. These magnetic field modulated properties
have been explained by the formation of microstructures due to electrostatic interactions between functionalized nanoparticles
and biopolymer chains.
alain.ponton@univ-paris-diderot.frJ Mat. Sci. 2018, Volume:6
DOI: 10.4172/2321-6212-C7-033