Autowave processes of forming gels as a cause of the coloring of oxyhydrate gels (the chromatic effect) of some rare earth metals (yttrium, gadolinium)

The authors attempted to find common reasons and regularities of inorganic and organic biosystems gelation and the prime modeled representations of bi osystems in the lifeless nature. With the help of a hydrodynamic model for the movement of colloid-chemical motion of elements in hydroxide gels of ra re earth metals (yttrium, gadolinium) the fluctuating character of excited gel's behavior in a liquid media is shown. Account for the dipole-dipole in teraction of gel's fragments in intermicellar solution allowed to prove mat hematically the spiral shaped formation of a gel, which was certified exper imentally. With the help of different methods of computer experiment, inclu ding a molecular-dynamic modeling of polymeric hydroxide excited media, the two-dimensional spiral-shaped formation of overmolecular fragments of yttr ium, gadolinium. gels, characteristic of autowave processes, is found. Ther e are given details of spiral formed vortexes. The effect of coloring the o xyhydrate gels of some high-density metals (the chromatic effect), in parti cular, the rare earth elements of yttrium., gadolinium., lanthanum, and oth ers were experimentally discovered. The periodic, oscillating nature of the change in the intensity of the gels color yttrium and gadolinium. oxyhydra te over time has been demonstrated. Theoretical and calculation methods wer e developed to explain the effect of coloring the oxyhydrate gels of high-d ensity metals. (C) 2001 Elsevier Science B.V. All rights reserved. f