STEM-EDX Characterization of Carbon-Silica Dual Phase Fillers Obtained via Impregnation Technology

摘要

In this study dual phase fillers obtained by impregnation method have been characterized by energy dispersive X-ray (EDX) spectroscopy in a scanning transmission electron microscope (STEM) or STEM-EDX. The difference between these fillers and a simple physical mixture of carbon black and silica, taken in the same proportions as in the resulting through impregnation fillers was investigated. The impregnation method used to obtain the dual phase filler allows tailoring the characteristics of the filler by altering the amount of silicon dioxide introduced. The results achieved showed that the conditions of obtaining influence the distribution and the location of the phases in the carbon silica hybrid fillers as well as their most essential characteristics including specific area, oil absorption number, iodine adsorption number, ash content and others.