Abstract
In this chapter, the authors present results of the study of evolution of organic-inorganic nanocomposites during gel formation from sols based on tetraethoxysilane; orthophosphoric acid and a number of polyonenes were studied. Schemes of multilevel fractal aggregation of inorganic nanocomposite and organic-inorganic nanocomposites are suggested according to SAXS data. It was shown that formation of surface fractal aggregates is stated at all structural levels. Mass fractal aggregates are generated on the second structural level (100 – 300 nm). A generation of the initial silicophosphate composite starts from the formation of practically spherical aggregates with order of 12 nm which forms compact lattice of the inorganic polymer on the kind of mass fractal with average particle size of 80 nm on the higher scale level. On the third level this structure occurs to be reorganized with forming of surface fractal clusters with very smooth surface and average particle size of 470 nm. Formation of surface fractal is supposed to strongly affect the protonic conductivity nanocomposites.