Structure of interacting aggregates of silica nanoparticles in a polymer matrix: Small-angle scattering and Reverse Monte-Carlo simulations

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dc.creatorOberdisse, Julian
dc.creatorHine, Peter
dc.creatorPyckhout-Hintzen, Wim
dc.date2007-05-22
dc.date.accessioned2026-07-07T08:02:52Z
dc.date.available2026-07-07T08:02:52Z
dc.descriptionReinforcement of elastomers by colloidal nanoparticles is an important application where microstructure needs to be understood - and if possible controlled - if one wishes to tune macroscopic mechanical properties. Here the three-dimensional structure of big aggregates of nanometric silica particles embedded in a soft polymeric matrix is determined by Small Angle Neutron Scattering. Experimentally, the crowded environment leading to strong reinforcement induces a strong interaction between aggregates, which generates a prominent interaction peak in the scattering. We propose to analyze the total signal by means of a decomposition in a classical colloidal structure factor describing aggregate interaction and an aggregate form factor determined by a Reverse Monte Carlo technique. The result gives new insights in the shape of aggregates and their complex interaction in elastomers. For comparison, fractal models for aggregate scattering are also discussed.
dc.identifierhttps://arxiv.org/abs/0705.3220
dc.identifierhttp://arxiv.org/abs/0705.3220
dc.identifierSoft Matter 3 (07/04/2007) 476-485
dc.identifierdoi:10.1039/b614957j
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/129373
dc.subjectSoft Condensed Matter
dc.titleStructure of interacting aggregates of silica nanoparticles in a polymer matrix: Small-angle scattering and Reverse Monte-Carlo simulations
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