Abstract

The polymerization of silic acid in the range from pH 9.5 to 1 N hydrochloric acid has been studied by gel chromatography. A mechanism for the growth of particles of polysilicic acids is proposed. It is included that the growth of particles of polymers in the pH range 9.5–9 and below 2 is due mainly to the polymerization between monosilicic and polysilicic acids, and in the pH range 7-4 mainly to the random condensation with each other of all the polymer species. The growth rate of particles of polymers is maximal at pH 6.5–7.

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