Title

The Effect of Molecular Structure on Borosilicate Glass Leaching

Abstract

The leaching behavior of several sodium borosilicate glasses has been characterized using a combination of pH stat titrations, elemental solution analyses, elemental depth profiling via elastic recoil detection analysis and Rutherford backscattering, sodium diffusion measurements, and 11B NMR measurements on both leached and unleached glass. Leaching results indicate that the molecular structure of the glass controls glass dissolution by establishing the distribution of ion exchange sites, hydrolysis sites, and the access of water to those sitas. There is no correlation between sodium leaching and sodium diffusion in the unaltered glass. For most borosilicates in most environments, network hydrolysis controls the kinetics of glass dissolution.

Department(s)

Materials Science and Engineering

Keywords and Phrases

Chemical Analysis - Titration; Borosilicate Glasses; Glass Dissolution

International Standard Serial Number (ISSN)

223093

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 1986 Elsevier, All rights reserved.

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