Glasses leaching, hydrolysis

W ter ndAlcohols. Silanes do not react with pure water or slightly acidified water under normal conditions. A rapid reaction occurs, however, in basic solution with quantitative evolution of hydrogen (3). Alkali leached from glass is sufficient to lead to the hydrolysis of silanes. 

Most studies of surface reactions on glasses have been concerned with the three processes of leaching or ion exchange, base-catalyzed hydrolysis of the glass network, and in situ phase transformation or reprecipitation. Reviews of the techniques applicable to physical characterization of gla.ss surfaces can be found in the work of Hench and Clark (123,124], Myhra et al. ]4], Kruger ]22], and references therein. 

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