title: Temperature-, pH-, and magnetic-field-sensitive hybrid microgels.
abstract: We demonstrate a simple route for the preparation of novel hybrid particles with multiple sensitivities. Aqueous polymeric microgels are modified by magnetite nanoparticles in the preparation of temperature- and pH-sensitive hybrids with a high magnetic response. Up to 15 wt % of magnetite nanoparticles are loaded into microgels. The influence of the amount of magnetite in the microgel structure on the morphology and colloidal properties is discussed. The presence of the magnetite nanoparticles in the microgel decreases its degree of swelling and shifts the volume phase-transition temperature to higher values. Nanostructured composite films with controlled morphologies can be prepared by water evaporation and deposition of the hybrid microgels on a solid substrate.
authors.affiliation: Macromolecular Chemistry and Textile Chemistry, Technische Universität Dresden, 01062 Dresden, Germany.
authors.forename: Sanchita
authors.initials: S
authors.lastname: Bhattacharya
authors.forename: Franziska
authors.initials: F
authors.lastname: Eckert
authors.forename: Volodymyr
authors.initials: V
authors.lastname: Boyko
authors.forename: Andrij
authors.initials: A
authors.lastname: Pich
mesh_terms: D003102:Colloids / Q000737:chemistry*; D016503:Drug Delivery Systems; D052203:Ferrosoferric Oxide / Q000737:chemistry*; D005782:Gels; D006863:Hydrogen-Ion Concentration; D008280:Magnetics; D008956:Models, Chemical; D053758:Nanoparticles / Q000737:chemistry; D036103:Nanotechnology; D011108:Polymers / Q000737:chemistry*; D012997:Solvents / Q000737:chemistry; D013499:Surface Properties; D013696:Temperature; D014961:X-Ray Diffraction
chemical_list: D003102:Colloids; D005782:Gels; D011108:Polymers; D012997:Solvents; D052203:Ferrosoferric Oxide