Synthesis of carbon black/polystyrene conductive nanocomposite. Pickering emulsion effect characterized by TEM.
In this study, carbon black/polystyrene electrically conductive composites were obtained by suspension polymerization technique. The composite was characterized using transmission electron microscopy, which indicated two outstanding features concerning to the carbon black; first, that the carbon particles were adsorbed onto the surface of the polystyrene particles, similarly as in the Pickering emulsion phenomenon and second, that the primary aggregate structure of the carbon black was significantly affected by the dispersion process. On the other hand, the composite resistivity was in the order of 200 Ωcm, which was attributed to the direct contact of primary carbon black particles (percolation) and not to the tunneling effect. The obtained composite was evaluated as the electrically conductive element in SBR matrix.
Centro de Investigación en Materiales Avanzados, S.C. Laboratorio Nacional de Nanotecnología, Miguel de Cervantes No. 120, Complejo Industrial Chihuahua, C.P. 31109, Chihuahua, Chih., Mexico. armando.zaragoza@cimav.edu.mx
Erasto Armando
EA
Zaragoza-Contreras
Claudia Alejandra
CA
Hernández-Escobar
Alfredo
A
Navarrete-Fontes
Sergio Gabriel
SG
Flores-Gallardo