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Materials Science and Nanotechnology | Volume 2
May 21-22, 2018 | New York, USA
International Conference on
Nanoscience & Technology
S
egregatedelectrically conductivepolymer nanocomposites
(s-CPCs) have conductive fillers segregated at the
interfaces of the polymer particles instead of being randomly
dispersed in the polymer matrix. Rubber nanocomposites
with segregated structure of Multiwalled carbon nanotubes
(MWCNTs) have been prepared by latex technology. Natural
rubber (NR) and Carboxylated acrylonitrile rubber (XNBR)
are used as the polymer matrices and MWCNT is used as
the conducting nanofiller. Surfactant assisted sonication has
been done to get stable aqueous dispersions of MWCNTs.
An alternate method without using surfactant includes the
oxidation of nanotubes in acidic environment which make
them hydrophilic and assists in forming stable dispersions
in water. Latex stage mixing of the aqueous dispersions of
MWCNTs to the rubber followed by film casting resulted
in composites with beautiful network of nanotubes inside
rubber which has been confirmed from TEM images. Fracture
surface morphologies as per SEM studies also support
the segregated network inside both NR and XNBR. The
composites exhibited good mechanical and solvent barrier
properties. Very low percolation threshold obtained from
electrical conductivity studies confirmed the segregated
network structure in which individual CNTs are aligned along
the periphery of the rubber particles in the composite. The
composites exhibited excellent dielectric properties which
make them promising in the capacitor applications.
e:
ninleo07@gmail.comRubber nanocomposites with segregated network of multiwalled carbon nanotubes
Neena George
Cochin University of Science and Technology, India