title: Core-shell structured monodisperse poly(3,4-ethylenedioxythiophene)/poly(styrenesulfonic acid) coated polystyrene microspheres and their electrorheological response.
abstract: We report the successful synthesis of transparent thin film of conducting poly(3,4-ethylenedioxythiophene)/poly(styrenesulfonic acid) (PEDOT/PSS) coated monodisperse polystyrene (PS) microspheres via a simple physical adsorption route in an aqueous media and their electrorheological (ER) application under an applied electric field. Due to the insulating PS core, the PEDOT/PSS wrapped PS (PEDOT/PSS/PS) particles possess a low volume conductivity appropriately applied as ER active materials. Tested by a rotational rheometer under an applied electric field, the PEDOT/PSS/PS based ER fluid dispersed in a silicone oil shows a typical Bingham-fluid behavior with increased yield stresses according to the increase of electric field strength.
authors.affiliation: Department of Polymer Science and Engineering, Inha University, Incheon 402-751, Korea.
authors.forename: Ying Dan
authors.initials: YD
authors.lastname: Liu
authors.forename: Ji Eun
authors.initials: JE
authors.lastname: Kim
authors.forename: Hyoung Jin
authors.initials: HJ
authors.lastname: Choi
mesh_terms: D004553:Electric Conductivity; D004563:Electrochemistry / Q000295:instrumentation*; D008863:Microspheres; D011137:Polystyrenes / Q000737:chemistry*; D013876:Thiophenes / Q000737:chemistry*
chemical_list: D011137:Polystyrenes; D013876:Thiophenes; C533756:poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate)