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Polymer Congress 2018
Polymer Sciences
ISSN: 2471-9935
Page 74
June 04-05, 2018
London, UK
4
th
Edition of International Conference on
Polymer Science and
Technology
Polym Sci 2018, Volume 4
DOI: 10.4172/2471-9935-C2-012
A
chieving stable suspensions of carbon nanotubes (CNTs)
is still a challenge; pristine CNTs have limited solubility in
either organic solvents or water due to their hydrophobicity
and strong inter tube van der Waals forces. Thus, a lot of
efforts have been devoted over the years to prepare stable
dispersion. Therefore, a non-covalent approach has the
advantage of no disruption of the structure and the properties
of the native tubes, which is realized by adding surfactants as
it allows keeping intact the intrinsic properties of the CNTs.
However, for different applications, the potential toxicity of
the surfactant is an important issue. Polysaccharides are
among the best candidates and chemical modification can
improve their intrinsic features. Therefore, bioengineering
technology has likewise become increasingly sophisticated
with the result using numerous chemical derivatives of
commercial polysaccharides and many of the untreated
polymers themselves, showing remarkable and sometimes
unique properties as thickening, stabilizing, gelling, and
emulsifying agents. Hence, among the family of water-soluble
polysaccharide the xanthan gum, the physical properties of
this polysaccharide are correspondingly subject to less than
normal variations and certain bacterial polysaccharides,
chemical modification can change the character of the
polysaccharide yielding therefore, to a new properties. The
dispersion and the stability against sedimentation of double
walled carbon nanotubes (DWCNTs) have been investigated
(rheological properties, Zeta potential) as a function of pH and
Xan concentration. Our results show that stable suspension of
DWCNTs with functionalized xanthan gum could be obtained.
skender_ab@yahoo.comPredominant interactions between dispersed carbon nanotubes
and hydrophobic ally functionalized polysaccharide in water
Skender A
1
, Hadj Ziane A
2
and
Flahaut E
3
1
University Yahia Fares Medea, Algeria
2
University Saad Dahlab Blida, Algeria
3
CIRIMAT, France