[en] The macroscopic electrical properties of carbon black filled polyethylene (PE)/poly-styrene (PS) blends depend strongly on the selective localization of carbon black particles in one of the phases of the polyblend. The electrical and dielectric properties of these materials can be understood in the framework of the double percolation theory. It appears that in the vicinity of the carbon black percolation threshold, the electrical conduction is dominated by tunneling. The recent theory of Brouers and Sarychev which includes quantum tunneling in the percolation scaling laws provides the basis for a discussion of the observed frequency dependence of the conductivity and the dielectric constant in the range 10-3 –10° Hz and its relation to the blend morphology.
Research Center/Unit :
Center for Education and Research on Macromolecules (CERM)
Disciplines :
Materials science & engineering Chemistry
Author, co-author :
Brouers, F.; Université de Liège - ULiège > Department of Applied Chemistry > Laboratory of Chemical Engineering
Royen, I.; Université de Liège - ULiège > Department of Applied Chemistry > Laboratory of Chemical Engineering
Blacher, Silvia ; Université de Liège - ULiège > Department of Applied Chemistry > Laboratory of Chemical Engineering
Pirard, René ; Université de Liège - ULiège > Department of Applied Chemistry > Laboratory of Chemical Engineering
Gubbels, Frédéric; Université de Liège - ULiège > Department of Chemistry > Center for Education and Research on Macromolecules (CERM)
Jérôme, Robert ; Université de Liège - ULiège > Department of Chemistry > Center for Education and Research on Macromolecules (CERM)
Sarychev, A.; Russan Academy of Sciences, Moscow, Rusisia > Center for Applied Problems in Electrodynamics
Language :
English
Title :
AC Properties of Carbon Black Filled Polymer Blends
