Well-Dispersed Fractal Aggregates as Filler in Polymer−Silica Nanocomposites: Long-Range Effects in Rheology

By Nicolas Jouault, P. Vallat, F. Dalmas, S. Said, J. Jestin, Franccois Bou'e. 2009

249 citations recorded by the source corpus.

We are presenting a new method of processing polystyrene−silica nanocomposites, which results in a very well-defined dispersion of small primary aggregates (assembly of 15 nanoparticles of 10 nm diameter) in the matrix. The process is based on the use of a high boiling point solvent, in which the nanoparticles are well dispersed, and a controlled evaporation procedure. The filler’s fine network structure is determined over a wide range of sizes, using a combination of small-angle neutron scattering (SANS) and transmission electronic microscopy (TEM) experiments. The mechanical response of the nanocomposite material has been investigated for both small (ARES oscillatory shear and dynamical mechanical analysis) and large deformations (uniaxial traction) as a function of the concentration of the particles in the matrix. Our findings show that with a simple tuning parameter, the silica filler volume fraction, we can investigate in the same way the structure−property correlations related to the two main reinfo...

View Paper: https://www.semanticscholar.org/paper/cece1c5e54dfd01308ee1dec48cd0f1bf27f09ca

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Citations in the corpus

• A review on the role of interface in mechanical, thermal, and electrical properties of polymer composites (2018, background): “content (over threshold), they can form a network which further restrains the mobility of the polymer chains [21].”