title: Core-shell structured polystyrene/BaTiO3 hybrid nanodielectrics prepared by in situ RAFT polymerization: a route to high dielectric constant and low loss materials with weak frequency dependence.
abstract: A novel route to prepare core-shell structured nanocomposites with excellent dielectric performance is reported. This approach involves the grafting of polystyrene (PS) from the surface of BaTiO(3)  by an in situ RAFT polymerization. The core-shell structured PS/BaTiO(3)  nanocomposites not only show significantly increased dielectric constant and very low dielectric loss, but also have a weak frequency dependence of dielectric properties over a wide range of frequencies. In addition, the dielectric constant of the nanocomposites can also be easily tuned by varying the thickness of the PS shell. Our method is very promising for preparing high-performance nanocomposites used in energy-storage devices.
authors.affiliation: Department of Polymer Science and Engineering, Shanghai Key Lab of Electrical Insulation and Thermal Aging, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, PR China.
authors.forename: Ke
authors.initials: K
authors.lastname: Yang
authors.forename: Xingyi
authors.initials: X
authors.lastname: Huang
authors.forename: Liyuan
authors.initials: L
authors.lastname: Xie
authors.forename: Chao
authors.initials: C
authors.lastname: Wu
authors.forename: Pingkai
authors.initials: P
authors.lastname: Jiang
authors.forename: Toshikatsu
authors.initials: T
authors.lastname: Tanaka
mesh_terms: D017609:Barium Compounds / Q000737:chemistry*; D053761:Nanocomposites / Q000737:chemistry*; D058105:Polymerization; D011137:Polystyrenes / Q000737:chemistry*; D013499:Surface Properties; D014025:Titanium / Q000737:chemistry*
chemical_list: D017609:Barium Compounds; D011137:Polystyrenes; C024547:barium titanate(IV); D014025:Titanium