SHANMUGATHASAN, Sharvina; BAGUR, Auriane; DUCROT, Étienne; BUFFIERE, Sonia; VAN OOSTRUM, Peter; RAVAINE, Serge; DUGUET, Etienne

doi:10.1016/j.colsurfa.2022.129344

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SHANMUGATHASAN, Sharvina
Centre de Recherche Paul Pascal [CRPP]
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]

BAGUR, Auriane
Centre de Recherche Paul Pascal [CRPP]
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]

DUCROT, Étienne
Centre de Recherche Paul Pascal [CRPP]

Langue

Article de revue

Ce document a été publié dans

Colloids and Surfaces A: Physicochemical and Engineering Aspects. 2022, vol. 648, p. 129344

Elsevier

Résumé en anglais

We report the synthesis at the gram scale of spherical silica particles bearing two organic patches made of grafted polystyrene chains at their poles. The patchy character of the particles is evidenced by combining transmission electron microscopy analysis and electron energy-loss spectroscopy. The multi-stage synthesis is based on the fabrication of silica/polystyrene bipods by dispersion polymerisation followed by the selective dissolution of the polymeric nodules, and leads to about 70% pure batches. The morphological purity is increased up to 98% by flow cytometry experiments. The polyethylenimine used as a stabiliser in the polymerisation step seems to play an important role in the detection of patches since the latter proved unsuccessful for particles obtained in the presence of polyvinylpyrrolidone.< Réduire

Mots clés en anglais

Two-patch silica particle

Seed-growth dispersion polymerisation

Bipod-like silica/polystyrene particle

Electron microscopy

Electron energy-loss spectroscopy

Flow cytometry

DOI

http://dx.doi.org/10.1016/j.colsurfa.2022.129344

Project ANR

Matériaux ordonnés via l'assemblage de nanoparticules chargées de façon hétérogène - ANR-17-CE09-0048

Origine

Importé de hal

Unités de recherche

Institut de Chimie de la Matière Condensée de Bordeaux (ICMCB) - UMR 5026