TY - JOUR
T1 - Dielectric relaxation in porous glasses
AU - Gutina, A.
AU - Antropova, T.
AU - Rysiakiewicz-Pasek, E.
AU - Virnik, K.
AU - Feldman, Yu
PY - 2003/3/18
Y1 - 2003/3/18
N2 - Dielectric spectroscopy was applied to different types of porous silica glass materials, wherein the effect of water adsorption at the pored surface of the glasses on the dielectric response was examined over wide temperature (-100 to +300 °C) and frequency (20 Hz-1 MHz) ranges. The dielectric relaxation in the porous materials was analyzed in terms of non-Debye slow decay dynamics. The physical nature of different states of water in the porous glass materials is discussed. Analysis of the dielectric parameters enables us to characterize the fractal dimension and porosity of the porous glasses. In addition to dielectric spectroscopy, FT-IR spectroscopy and thermogravimetric analysis have also been applied.
AB - Dielectric spectroscopy was applied to different types of porous silica glass materials, wherein the effect of water adsorption at the pored surface of the glasses on the dielectric response was examined over wide temperature (-100 to +300 °C) and frequency (20 Hz-1 MHz) ranges. The dielectric relaxation in the porous materials was analyzed in terms of non-Debye slow decay dynamics. The physical nature of different states of water in the porous glass materials is discussed. Analysis of the dielectric parameters enables us to characterize the fractal dimension and porosity of the porous glasses. In addition to dielectric spectroscopy, FT-IR spectroscopy and thermogravimetric analysis have also been applied.
KW - Adsorbed water
KW - Dielectric spectroscopy
KW - Fractal dimension
KW - Porosity
KW - Porous glass
UR - http://www.scopus.com/inward/record.url?scp=0037453046&partnerID=8YFLogxK
U2 - 10.1016/S1387-1811(02)00651-0
DO - 10.1016/S1387-1811(02)00651-0
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AN - SCOPUS:0037453046
SN - 1387-1811
VL - 58
SP - 237
EP - 254
JO - Microporous and Mesoporous Materials
JF - Microporous and Mesoporous Materials
IS - 3
ER -