CE06 - Polymères, composites, physique et chimie de la matière molle, procédés

Stabilization of water-in-water emulsions by bis-hydrophilic copolymers for the fabrication of all aqueous capsules – WATCAPS

Submission summary

Water-in-water (W/W) emulsions are obtained by mixing in water two hydrophilic incompatible polymers. Stable W/W emulsions have a rich potential for applications such as encapsulation of hydrophilic molecules. So far, stabilization of W/W emulsions against coalescence has been tried by adding particles. This process is effective for oil/water emulsions, but often doesn't work for W/W emulsions and the conditions leading to stable W/W emulsions remain unclear. Moreover, adding particles doesn’t allow easy control of the droplet size and the interface permeability. Importantly, W/W emulsions stabilized by particles are not resistant to dilution, which is detrimental for many applications. To address these issues, we propose to use bis-hydrophilic copolymers that stabilize W/W emulsions by spontaneously forming a protective layer at the droplet interface. The aim of the project WATCAPS is to produce well-defined aqueous capsules by crosslinking the bis-hydrophilic copolymers in the layer.

Project coordination

Frederic RENOU (INSTITUT DES MOLÉCULES ET MATÉRIAUX DU MANS)

The author of this summary is the project coordinator, who is responsible for the content of this summary. The ANR declines any responsibility as for its contents.

Partner

IMMM INSTITUT DES MOLÉCULES ET MATÉRIAUX DU MANS
LCPM Laboratoire de chimie-physique macromoléculaire

Help of the ANR 404,498 euros
Beginning and duration of the scientific project: - 48 Months

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