Abstract
Results of a rheological study of colloid systems synthesized by the sol-gel technique are presented. The method of rotation viscometry was used to examine the effect of boric acid and an organic modifier (polyol with hyperbranched structure, introduced in various amounts of 0.7 to 2.0 wt %) on structuring processes in sols based on tetraethoxysilane. Dilatant and thixotropic properties of the systems under study are described. The range of optimal concentrations of the organic modifier, in which thin hybrid organic-inorganic films are formed, was found.
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