Environmentally Responsive Particles: From Superhydrophobic Particle Films to Water-Dispersible Microspheres
RODRIGUEZ-HERNANDEZ, Juan
Instituto de Ciencia y Tecnologia de Polimeros [ICTP-CSIC]
Laboratoire de Chimie des Polymères Organiques [LCPO]
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Instituto de Ciencia y Tecnologia de Polimeros [ICTP-CSIC]
Laboratoire de Chimie des Polymères Organiques [LCPO]
RODRIGUEZ-HERNANDEZ, Juan
Instituto de Ciencia y Tecnologia de Polimeros [ICTP-CSIC]
Laboratoire de Chimie des Polymères Organiques [LCPO]
Instituto de Ciencia y Tecnologia de Polimeros [ICTP-CSIC]
Laboratoire de Chimie des Polymères Organiques [LCPO]
MUNOZ-BONILLA, Alexandra
Instituto de Ciencia y Tecnologia de Polimeros [ICTP-CSIC]
Laboratoire de Chimie des Polymères Organiques [LCPO]
Instituto de Ciencia y Tecnologia de Polimeros [ICTP-CSIC]
Laboratoire de Chimie des Polymères Organiques [LCPO]
PAPON, Eric
Laboratoire de Chimie des Polymères Organiques [LCPO]
Team 1 LCPO : Polymerization Catalyses & Engineering
< Réduire
Laboratoire de Chimie des Polymères Organiques [LCPO]
Team 1 LCPO : Polymerization Catalyses & Engineering
Langue
en
Article de revue
Ce document a été publié dans
Langmuir. 2010, vol. 26, n° 24, p. 18617-18620
American Chemical Society
Résumé en anglais
We describe the preparation, by precipitation copolymerization, of multifunctional divinylbenzene-co-pentafluorostyrene microspheres able to produce superhydrophobic surfaces or disperse in aqueous media upon annealing ...Lire la suite >
We describe the preparation, by precipitation copolymerization, of multifunctional divinylbenzene-co-pentafluorostyrene microspheres able to produce superhydrophobic surfaces or disperse in aqueous media upon annealing either in air or water, respectively. For that purpose, an amphiphilic block copolymer, polystyrene-b-poly(acrylic acid), was introduced in the initial feed composed of divinylbenzene and 2,3,4,5,6-pentafluorostyrene. As a result, fluorinated particles were obtained in which the diblock copolymer was encapsulated during the polymerization step. Upon annealing in dry air, the particles are completely hydrophobic and form superhydrophobic surfaces. On the contrary, annealing in water induces the reorientation of the PAA groups toward the particle interface, thus the particles can be dispersed in aqueous media. In addition, the presence of carboxylic acid groups at the particle interface permits us to switch the surface charge between negative and neutral depending on the environmental pH.< Réduire
Mots clés en anglais
LATEX-PARTICLES
POLYMER MICROSPHERES
SURFACES
NANOPARTICLES
COATINGS
Origine
Importé de halUnités de recherche