Kinetic features of formation of supramolecular structures based on silica monodispersed spherical particles

We have established that when the formation of supramolecular structures of spherical silica particles with a diameter of 220-320 nm is limited by the rate of entering of the particles into the zone of sediment formation (sediment deposition in a tube of constant cross section), the rate of particles deposition, as well as the rate of formation of the supramolecular structure, composed of them, are strictly linear. At the same time, in conditions of an excessive disperse phase in the zone of formation of the supramolecular structure (sediment deposition in a tube with a modified crosssection) the rate of deposition is also linear, but the process of formation of the supramolecular structure is delayed. The smaller the size of the disperse phase particles, the greater this delay. After the end of formation of the supramolecular structure, an area with increased concentration of the dispersed phase remains over it, which height the greater, the smaller is the particle size. We have showed that the beginning of the formation of a supramolecular structure requires a certain concentration of the disperse phase in the disperseenvironment, below which the formation of supramolecularly ordered structure does notoccur. The value of the concentration of the dispersed phase, required to start formation of a supramolecular structure, is a constant, not changing with time; and it depends only on particle size.