title: Emulsion polymerization routes to chemically anisotropic particles.
abstract: Methods are presented to synthesize suspensions of chemically and shape anisotropic colloids on submicrometer length scales. Particles are synthesized through seeded emulsion polymerization where a weakly cross-linked seed is swollen with monomer that phase separates at the reaction temperature resulting in a protrusion. The final particles can be considered to be composed of interpenetrating spheres. pH-sensitive anisotropy is created through the use of different surface coatings on each of the interpenetrating spheres. Dark-field imaging, dynamic light scattering, and scanning electron microscopy are used to characterize the particles.
authors.affiliation: Department of Chemical and Biomolecular Engineering, University of Illinois, Urbana, Illinois 61801, USA.
authors.forename: Eric B
authors.initials: EB
authors.lastname: Mock
authors.forename: Charles F
authors.initials: CF
authors.lastname: Zukoski
mesh_terms: D016880:Anisotropy; D004655:Emulsions / Q000138:chemical synthesis / Q000737:chemistry*; D006863:Hydrogen-Ion Concentration; D010316:Particle Size; D013499:Surface Properties; D013696:Temperature
chemical_list: D004655:Emulsions