title: Multiple emulsions as soft templates for the synthesis of multifunctional silicone porous particles.
abstract: Multiple emulsion templating is a versatile strategy for the synthesis of porous particles. The present work addresses the synthesis of multifunctional poly(dimethylsiloxane) porous particles using multiple water-in-oil-in-water emulsions as soft templates with an oil phase constituted by a crosslinkable poly(dimethylsiloxane) (PDMS) oil. Herewith, the impact of the viscosity of PDMS oil (i.e., molecular weight) on the properties of both the emulsion templates and the resulting particles was evaluated. The viscosity of PDMS oil has a strong effect on the size and polydispersity of the emulsion templates as well as on the mechanical properties of the derived particles. The elastic modulus can be tuned by mixing PDMS oils of different viscosities to form bimodal crosslinked networks. Iron oxide nanoparticles can be readily incorporated into the emulsion templates to provide additional functionalities to the silicone particles, such as magnetic separation or magnetic hyperthermia. The synthesized composite magnetic particles were found to be useful as recoverable absorbent materials (e.g., for oil spills) by taking advantage of their high buoyancy and high hydrophobicity.
authors.affiliation: Institute for Advanced Chemistry of Catalonia, Consejo Superior de Investigaciones Científicas (IQAC-CSIC) and CIBER de Bioingeniería, Biomateriales y Nanomedicina, Jordi Girona 18-26, 08034 Barcelona, Spain. Electronic address: n.vilanova.garcia@tue.nl.
authors.forename: Neus
authors.initials: N
authors.lastname: Vilanova
authors.affiliation: International Iberian Nanotechnology Laboratory, Av. Mestre José Veiga s/n, 4715-330 Braga, Portugal. Electronic address: yury.kolenko@inl.int.
authors.forename: Yury V
authors.initials: YV
authors.lastname: Kolen'ko
authors.affiliation: Institute for Advanced Chemistry of Catalonia, Consejo Superior de Investigaciones Científicas (IQAC-CSIC) and CIBER de Bioingeniería, Biomateriales y Nanomedicina, Jordi Girona 18-26, 08034 Barcelona, Spain. Electronic address: csmqci@iqac.csic.es.
authors.forename: Conxita
authors.initials: C
authors.lastname: Solans
authors.affiliation: International Iberian Nanotechnology Laboratory, Av. Mestre José Veiga s/n, 4715-330 Braga, Portugal. Electronic address: carlos.rodriguez@inl.int.
authors.forename: Carlos
authors.initials: C
authors.lastname: Rodríguez-Abreu
mesh_terms: D004129:Dimethylpolysiloxanes / Q000737:chemistry*; D004655:Emulsions; D008855:Microscopy, Electron, Scanning; D010316:Particle Size; D014783:Viscosity
chemical_list: D004129:Dimethylpolysiloxanes; D004655:Emulsions; C013830:baysilon
keywords: Magnetic properties; Mechanical properties; Multiple emulsions; Porous particles; Silicone; Swelling