Summary
It can be stated that the influence of the presence of carbon black in a rubber vulcanisate with regard to the dynamic properties can be explained by assuming physical adsorption of rubber on the black surface. The effect can be represented by assuming an adsorbed layer having different properties from the bulk rubber taking the layer thickness to be at least 20 Å. Adsorption — desorption from this layer causes non-linearity and may contribute to the losses observed in the rubber-glass transition. This adsorption is analogous to the adsorption of simple liquids in microporous systems such as silicagel and activated carbon.
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References
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Smit, P.P.A. The glass transition in carbon black reinforced rubber. Rheol Acta 5, 277–283 (1966). https://doi.org/10.1007/BF02009735
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DOI: https://doi.org/10.1007/BF02009735