Abstract

The nucleation kinetics of sodium perborate in aqueous solutions, have been studied at different contents of sodium metaborate. Measurements of metastable zone width and induction periods, carried out under controlled conditions of temperature, supersaturation, and stirring rate, show the great influence of sodium metaborate content over both the sodium perborate solubility and its nucleation kinetics. Furthermore, from the experimental results, nucleation rate relationships and interfacial tension values for the examined systems have been determined. An interesting result of the study has been the good agreement obtained between the interfacial tension values derived from two different sets of experimental data regarding the metastable zone width and the induction period respectively.

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