Abstract
Using a recently developed coarse grained material model for filled elastomers, we compare the effects of uniform versus flocculated filler dispersion and high versus low shear frequency, the higher close to the tanδ-peaks of the reference systems and the lower two orders of magnitude smaller, on the dynamic moduli as well as on the distribution of local strain, stress and energy density in the respective model materials. We study the relative contributions of the polymer–filler and filler–filler interfaces to the Payne effect. In addition, we present a comparative study, again in terms of filler morphology and shear frequency, of the local strain, stress, and energy density in the aforementioned interfaces including the polymer subphase. This is motivated by the likely importance of these quantities for initiation and propagation of damage in filled nanocomposites.
Published Version
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