Influence of Polyionenes on Rheology of Phospho-Organic Compounds

Abstract

In this chapter authors present basic principles of process control of sol – gel synthesis of new class of organic-inorganic nanostructured materials on basis of tetraethoxysilane and polyionenes doped by orthophosphoric acid with improved functional properties. The chemical compositions improvement results from complex investigation of morphology, physical and chemical properties. Polyionenes are shown to increase the rate of hydrolytical polycondensation reaction of tetraethoxysilane. Raise of the polyionene molecular weight leads to increasing rate of gel formation process. The polyionenes in silicophosphate sols are stated to prevent crystallization processes occurred in silicophosphate xerogels with silica phosphates and pyrophosphates.