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Particles in model filled rubber: Dispersion and mechanical properties

Abstract

We have been able to design model filled rubbers with exactly the same chemical structure but different filler arrangements. From these model systems, we show that the particle arrangement in the elastomeric matrix controls the strain softening at small strain amplitude known as the Payne effect, as well as the elastic modulus dependence on the temperature. More precisely, we observed that the Payne effect disappears and the elastic modulus only weakly depends on the temperature when the particles are well separated. On the contrary, samples with the same interfacial physical chemistry but with aggregated particles show large amplitudes of the Payne effect and their elastic modulus decreases significantly with the temperature. We discuss these effects in terms of glassy bridge formation between filler particles. The observed effects provide evidence that glassy bridges play a key role on the mechanical properties of filled rubbers.

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Correspondence to A. Papon.

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Montes, H., Chaussée, T., Papon, A. et al. Particles in model filled rubber: Dispersion and mechanical properties. Eur. Phys. J. E 31, 263–268 (2010). https://doi.org/10.1140/epje/i2010-10570-x

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  • DOI: https://doi.org/10.1140/epje/i2010-10570-x

Keywords

  • Elastic Modulus
  • Silica Particle
  • Strain Amplitude
  • Strain Softening
  • Small Angle Neutron Scattering