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Viscoelasticity and morphological modulation of silicon alkoxide-based systems by selective catalysts

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Abstract

We have studied the formation of three-dimensional silicon alkoxide-based network resulting from an inorganic polycondensation based on hydrolysis and condensation reactions. Using mechanical spectroscopy, small-angle X-ray scattering, and penetration measurements, we have shown that viscoelastic and morphological properties of gelling soft matter systems can be modulated according to the nature of a catalyst by modifying the rate of the hydrolysis and condensation reactions. The description of the network build up in terms of a continuous transition between three viscoelastic states leads us to obtain new information on the viscoelastic properties determined up to now only at the sol–gel transition.

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Acknowledgement

The authors would like to thank C. Bourgaux for small-angle X-ray measurements.

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Authors and Affiliations

  1. Laboratoire Matière et Systèmes Complexes UMR 7057, Université Paris Diderot-Paris 7, Bâtiment Condorcet CC 7056 10 rue Alice Domon et Léonie Duquet, 75205, Paris Cedex 13, France

    Alain Ponton & Stephane Warlus

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  1. Alain Ponton
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  2. Stephane Warlus
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Correspondence to Alain Ponton.

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Ponton, A., Warlus, S. Viscoelasticity and morphological modulation of silicon alkoxide-based systems by selective catalysts. Rheol Acta 49, 953–960 (2010). https://doi.org/10.1007/s00397-010-0462-9

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  • DOI: https://doi.org/10.1007/s00397-010-0462-9

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