Magnetic Resonance Imaging of Water Absorption by Highly Porous Ceramic Materials

Autor:	D. V. Grashchenkov, A. S. Bespalov, E. V. Morozov, V. M. Buznik
Rok vydání:	2019
Předmět:	Water transport Absorption of water 010405 organic chemistry Chemistry Oxide General Chemistry Ceramic materials engineering.material equipment and supplies 010402 general chemistry 01 natural sciences Supercritical fluid 0104 chemical sciences chemistry.chemical_compound Coating engineering Wetting Porosity Porous medium
Zdroj:	Doklady Chemistry. 484:44-47
ISSN:	1608-3113 0012-5008
DOI:	10.1134/s0012500819020058
Popis:	By using the magnetic resonance imaging method the nontrivial character of water absorption was demonstrated for the first time in highly porous ceramic materials. The effect of hygroscopic memory was found out which is that the preferable concentration of absorbed water in certain areas within the sample persists regardless the subsequent sample wetting history. Coating the oxide fibres with fluorine-containing hydrocarbons in supercritical CO 2 in order to hydrophobize the material has been shown to affect substantially the water transport within the sample that can be referred to as an effective approach to protect the porous materials from humid environment. The results obtained demonstrate the advantages of the magnetic resonance imaging in studying the water absorption processes and visualization of water pathways in highly porous ceramic materials.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::c9d6dcea481305ee5be2fc32c1638704 https://doi.org/10.1134/s0012500819020058 Zobrazit plný text záznamu Plný text ve formátu PDF Plný text ve formátu HTML
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