Premium
Interpretation of Hydrated States of Sodium Silicate Glasses by Infrared and Raman Analysis
Author(s) -
Uchino Takashi,
Sakka Tetsuo,
Iwasaki Matae
Publication year - 1991
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1991.tb06880.x
Subject(s) - overtone , raman spectroscopy , silicate , infrared , molecule , silicate glass , sodium silicate , infrared spectroscopy , spectral line , chemistry , sodium , analytical chemistry (journal) , mineralogy , materials science , optics , organic chemistry , physics , astronomy , composite material
Infrared spectra of thin films (a few micrometers) of hydrated sodium silicate glasses after heating at temperatures from 100° to 400°C were measured in the spectral region from 400 to 4300 cm −1 . Also, Raman spectra of hydrated glasses were measured in the region from 100 to 1400 cm −1 . Water molecules in hydrated glasses were classified into three types by the bonding configuration: water molecules interacting with Si–OH groups, nonbridging oxygens, and bridging oxygens. On the basis of the fundamental bands observed here, we calculated the wave numbers of the combination‐overtone bands of water molecules and SiOH groups in hydrated glasses. The calculated wave numbers satisfactorily agreed with observed wave numbers in the nearinfrared region.