Magnetic Resonance Imaging of Water Absorption by Highly Porous Ceramic Materials

A nontrivial character of water absorption in highly porous ceramic materials has been demonstrated for the first time by magnetic resonance imaging: a phenomenon of hygroscopic memory has been detected consisting in the concentration of adsorbed water in certain areas inside the sample, repeated du...

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Bibliographic Details
Published in:Doklady. Chemistry 2019-08, Vol.484 (2), p.44-47
Main Authors: Morozov, E. V., Buznik, V. M., Bespalov, A. S., Grashchenkov, D. V.
Format: Article
Language:English
Subjects:
Ceramics industry
Chemistry
Chemistry and Materials Science
Chemistry/Food Science
Fluoropolymers
Industrial Chemistry/Chemical Engineering
Magnetic resonance imaging
Migration
NMR
Nuclear magnetic resonance
Paraffins
Porous materials
Protective coatings
Water absorption
Wetting
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Summary:A nontrivial character of water absorption in highly porous ceramic materials has been demonstrated for the first time by magnetic resonance imaging: a phenomenon of hygroscopic memory has been detected consisting in the concentration of adsorbed water in certain areas inside the sample, repeated during subsequent wetting with water. It has been shown that hydrophobization of the material by applying fluoro paraffin coatings to oxide fibers using the method of dissolution of fluoropolymers in supercritical CO 2 has a significant impact on the transport of water into products and can be considered an efficient means of protecting porous materials from moisture. The results demonstrate the capabilities of the MRI method in studying the water absorption and identifying water migration pathways in highly porous materials.
ISSN:0012-5008
1608-3113
DOI:10.1134/S0012500819020058