Abstract:
The binding of water in heterogeneous systems containing polymethylsiloxane (PMS) pyrogenic nanosilica
(A-300) water and the surface-active substance decametoxin (DMT) was studied. Composite systems were
created using metered mechanical loads. The low-temperature 1H NMR spectroscopy was used to measure the
structural and thermodynamic parameters of bound water. It is shown that when filling PMS interparticle gaps
with hydrocompaction, the interfacial energy of water in the interparticle gaps of hydrophobic PMS with the
same hydration is twice as large as the interfacial energy of water in hydrophilic silica A-300. This is due to the
smaller linear dimensions of the interparticle gaps in the ICP compared with the A-300. In the composite system,
A-300/PMS/DMT/H2O, a non-additive growth of water binding energy is observed, which is likely due to the
formation under the influence of mechanical load in the presence of water of microheterogeneous sites, consisting
mainly of the hydrophobic and hydrophilic components (microcoagulation). Thus, using mechanical loads, the
adsorption properties of composite systems can be controlled
