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equilibrium materials. With regard to organic-inorganic systems, such
information is very limited.
The purpose of the study of structure laws of consideration and study of the
thermodynamics of the interaction structure in the organic-inorganic systems
based
on
hydrophilic
polymers,
polyvinylpyrrolidone
(PVP),
polivinilkaprolaktama (PVC), polyvinyl alcohol (PVA) and inorganic monomer
tetramethoxysilane (TMOS). We solve specific problems:
- The study of kinetics of structure formation in aqueous solutions of
adducts TMOS (hell TMOS) and PVP polymers, PVC, PVA solution in
transitions - sol - gel - xerogel
- A detailed analysis of the final xerogel polymer phase structure of
different compositions, and its comparison with the structure of the compositions
based on the same polymer filled with particles of fumed silica (Aerosil) by
mixing
- Study of sorption properties of the individual components and organic -
inorganic compounds, thermodynamic interaction in binary systems,
- Charting phase, physical states in binary, ternary systems.
Scientific novelty: - obtained, classified, analyzed rheokinetic according to
aqueous solutions of adducts TMOS, hydrophilic polymers in terms of gelling
polymer is shown influence on the processes of structure formation in the
reaction mixtures of different composition,
- Traced the kinetics of phase transformations in reaction systems, an
assessment of average sizes of the scattering centers, their number per unit
volume, shows their evolution, initiated by chemical transformations, the
formation of a new phase in the sol - gel transition,
- Investigated the structure formation in organo - inorganic compounds at
the stage of transition gel - xerogel identified secondary phase transformations
initiated by evaporation of the solvent,
- Made structural-morphological studies of the particles of amorphous
silica, the teachings of TMOS and their aggregates in comparison with aerosil,
- Detail Sorption of water vapor hydrophilic polymers PVP, PVC and
PVA, to study the effect of various parameters on their sorption properties,
performed thermodynamic analysis of polymer systems - water, taking into
account non - equilibrium state of glassy polymeric sorbents
- Obtained, analyzed sorption isotherms of water vapor mixtures of
polymers of different ratios of the components, it is shown that the adsorption
capacity is not an additive composition function, set the interaction between the
functional groups of the polymer, silica, evaluated the availability of active sites
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