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Polymer Chemistry 2018
Polymer Sciences
ISSN: 2471-9935
Page 76
March 26-28, 2018
Vienna, Austria
3
rd
Edition of International Conference and Exhibition on
Polymer Chemistry
P
ickering emulsions are based on amphiphilic particle
stabilizers, which adsorb irreversibly at the liquid-liquid
interface and form a rigid structure around the droplets.
Amongst these particles, cellulose nanocrystals (CNCs) have
demonstrated good performances as Pickering stabilizers for
oil in water (o/w) emulsions in the presence of salt additives,
or after chemical functionalization of the surface. In this work,
a wide range of o/w emulsions of monomers were stabilized
by amphiphilic modified CNCs. These Pickering emulsions
subsequently serve as vessel to performradical polymerization.
In the first system, the CNCs are modified with a non-reactive
moiety to tailor the hydrophobic/hydrophilic balance and the
polymerization in the droplet is initiated by thermal radical
initiator solubilized in the monomer. In the second system, the
CNCs are modified with an ATRP initiator, in order to start the
polymerization directly from the shell of the droplets to the
center of the beads, in a controlled way. In this presentation,
we will characterize both the emulsions and the corresponding
latexes in a colloidal and polymeric point of view.
Recent Publications
1. S.U. Pickering, (1907), CXCVI.—Emulsions, Journal of
Chemical Society, 91, (0), 2001-2021.
2. I. Kalashnikova, (2012), Modulation of Cellulose
Nanocrystals Amphiphilic Properties to Stabilize Oil/
Water Interface Biomacromolecules, 13, (1), 267-275.
3. G. Sèbe, (2013), Dispersibility and Emulsion-Stabilizing
Effect of Cellulose.
4. Nanowhiskers Esterified by Vinyl Acetate and Vinyl
Cinnamate, Biomacromolecules, 14, (8), 2937-2944.
5. A. Werner, (2017), Synthesis of surfactant-free micro-
and nanolatexes from Pickering emulsions stabilized by
acetylated cellulose nanocrystals, Polymer Chemistry, 8,
(39), 6064 – 6072.
6. G. Morandi, (2009), Cellulose Nanocrystals Grafted
with Polystyrene Chains through Surface-Initiated Atom
Transfer Radical Polymerization (SI-ATRP), Langmuir, 25,
(14), 8280-8286.
Biography
Arthur Werner is pursuing his PhD in Polymer Science at the University of
Bordeaux. He obtained his Master’s Degree in Physico-Chemistry (2015)
and works now under the supervision of Dr. Gilles Sèbe and Dr. Valérie Héro-
guez. His area of interest is situated at the junction of colloïdal and polymer
sciences with a specification for Pickering emulsions based on cellulose
nanocrystals.
Arthur.werner@enscbp.frFormation and polymerization of Pickering emulsions
stabilized by modified cellulose nanocrystals
Arthur Werner, Gilles Sèbe, Valérie Héroguez
and
Véronique Schmitt
University of Bordeaux, France
Arthur Werner et al., Polym Sci, Volume 4
DOI: 10.4172/2471-9935-C1-008