The most widely used method for determination of the OH content of glasses is the IR spectroscopy. The absorption bands in the range of 2500 to 4000cm-1 are due to the fundamental stretching vibrations of OH groups having different degrees of association. Comparing water outgassing method with 1H NMR spectroscopy, a large difference in the OH content was observed. Therefore, it is more appropriate to use solely the absorption coefficient as a relative measure of the true OH content. If certain requirements are met, the quantitative analysis of the absorption coefficient of different glass samples is justified.
Origin
Otto-Schott Inst Fur Glaschemie, Jena, Germany
Journal Title
Glastech Ber Glass Sci Technol 68 5 1995 139-146
Sector
Special Glass
Class
S 888