[Impulse NMR study of the mobility of water adsorbed onto cellulose].
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.
D000327:Adsorption; D002482:Cellulose; D003368:Gossypium; D009682:Magnetic Resonance Spectroscopy; D014867:Water
D014867:Water; D002482:Cellulose
Issledovanie podvizhnosti vody, adsorbirovannoĭ na tselliuloze, impul'snym metodom IaMR.