title: An easy way to control the morphology of colloidal polymer-oxide supraparticles through seeded dispersion polymerization.
abstract: SiO(2)/polystyrene colloidal supraparticles were synthesized through dispersion polymerization by using poly(N-vinylpyrrolidone) as stabilizer, in the presence of silica particles coated with methacryloxymethyltriethoxysilane. Scanning and transmission electron microscopy studies indicate that dumbbell-like or snowman-like supraparticles can be prepared by taking advantage of the coalescence phenomenon which occurs between growing polymer nodules in pure alcoholic medium, at high monomer concentration and/or at high temperature. By decreasing both temperature and monomer concentration, while adding a varying amount of water in the alcoholic reaction medium, core-shell or other interesting morphology binary supraparticles were obtained.
authors.affiliation: CNRS, Université de Bordeaux, CRPP, 33600 Pessac, France.
authors.forename: David
authors.initials: D
authors.lastname: Nguyen
authors.forename: Etienne
authors.initials: E
authors.lastname: Duguet
authors.forename: Elodie
authors.initials: E
authors.lastname: Bourgeat-Lami
authors.forename: Serge
authors.initials: S
authors.lastname: Ravaine