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8. Aerogels: "model" materials
Due to their mode of synthesis by aggregation, their biphasic nature and their fractal characteristics, gels have often been considered as real materials for testing certain physical theoretical models. We propose to verify whether certain approaches used in the literature, concerning aggregation mechanisms, aggregate structure and the supposed evolution of the physical properties of the gel network, are in agreement with experimental results.
8.1 Gels: materials with a fractal structure?
Such a provocative title may come as a surprise, given that in previous sections of this paper we have focused on the fractal characteristics of gels. However, in the literature, we find different conclusions as to the fractal nature of silica aerogels. Some authors maintain...
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Aerogels: "model" materials
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