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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.fr

Formation 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