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[Impulse NMR study of the mobility of water adsorbed onto cellulose].

Authors
Type
Published Article
Journal
Biofizika
Publication Date
Volume
24
Issue
6
Pages
985–989
Identifiers
PMID: 508838
Source
Medline

Abstract

An impulse method of nuclear magnetic resonance was used for measuring the times of spin-lattice relaxation in the rotating system of coordinates (RSC) for water molecules adsorbed on cottone cellulose. It has been shown that within the temperature region -10 divided by -40 degrees C the spin-lattice relaxation of water in RSC is conditioned by intermolecular interactions modulated with translation movement. The selfdiffusion coefficient of adsorbed water for the sample with 55% humidity at -10 degrees C is determined as 2.0.10(-9) cm2/s and decreases to 0.3.10(-9) cm2s at -40 degrees C, with activation energy of diffusion equalling 8.1 kcal/mol.

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