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Dynamic properties of water in porous Vycor glass studied by dielectric techniques
This item is provided by the institution :
National Technical University of Athens
Repository :
Digital Library of National Technical University of Athens | Dspace@NTUA
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ΕΚΤ item type
Journal part
(EN)
Scientific article
(EN)
EKT year
1994
(EN)
EKT historical period
Title
Dynamic properties of water in porous Vycor glass studied by dielectric techniques (EN)
Creator
Laudat, J (EN)
Daoukaki, D (EN)
Kyritsis, A (EN)
Pissis, P (EN)
Description
The structure and dynamic properties of water in porous Vycor glass of 40 Å mean pore diameter, as well as their changes with temperature, were studied by dielectric relaxation spectroscopy and dc conductivity measurements. The mobility of water moledules in the pores was reduced compared with that of bulk water by a factor which decreased with increasing water content. A significant fraction of water in the first monolayer is transformed to a glassy state at about 170 K. The formation of water clusters around primary hydration sites started at about 0.02 g(H2O)/g (dry sample) where a transition to long-range connectivity amiong ater molecules was observed. © 1994. (EN)
Type
journalArticle (EN)
Subject
Water (EN)
Spectroscopy (EN)
Electric conductivity measurement (EN)
Materials Science, Ceramics (EN)
Fluid dynamics (EN)
Hydration (EN)
Molecular structure (EN)
Materials Science, Multidisciplinary (EN)
Porous materials (EN)
Glass (EN)
Dynamic properties (EN)
Dielectric relaxation (EN)
Glass transition (EN)
Molecules (EN)
Thermally stimulated depolarization (EN)
Water confinement (EN)
Dynamic Properties (EN)
Provider
National Technical University of Athens
Repository / collection
Digital Library of National Technical University of Athens | Dspace@NTUA
Subcollections
Κεντρική Βιβλιοθήκη Ε.Μ.Π.
Ιδρυματικό Αποθετήριο
Δημοσιεύσεις μελών Δ.Ε.Π. σε περιοδικά
Journal
Journal of Non-Crystalline Solids (EN)
Language
English
Issued
1994 (EN)
Identifier
http://hdl.handle.net/123456789/11212
2 (EN)
201 (EN)
207 (EN)
ISI:A1994PA67500011 (EN)
171 (EN)
10.1016/0022-3093(94)90356-5 (EN)
0022-3093 (EN)
Publisher
ELSEVIER SCIENCE BV (EN)
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