Characterization of Physical and Chemical Networks in Filled RuCharacterization of Physical and Chemical Networks in Filled Rubber Compounds by Pyrolysis GC/MS

摘要

For green compounds, the coupler used affects the intensity ratio of the sample. Suggests interaction between the ethoxy groups on the coupler and the polar curatives present. For green and cured compounds, as the equivalents of silane is increased, there is an increase in the intensity ratio for silica-filled samples, with the opposite holding true for carbon black samples. Suggests a different mechanism of interaction between coupler and filler for the carbon black-filled or silica-filled samples. Physical adsorption between coupler and carbon black. Chemisorption between coupler and silica. Pyrolysis GC-MS can be coupled with other techniques (LF NMR) in order to understand the microstructure of rubber compounds.