NMR Relaxation and Restricted Self-Diffusion of Water in Wood
Pp. 82-96 (15)
Victor V. Rodin
In the technological treatment of wood materials, it is important to control
water-wood interactions. To measure the water self-diffusion coefficients properly in
wetting/drying processes of wood, it is necessary to understand many factors affecting
the experiments. For fibrous material, the diffusivities of water could be different along
the fiber and in the direction of perpendicular to fiber axis. The chapter presents the
data of NMR relaxation and 1-dimensional PFG NMR in studying anisotropic diffusion
of water in wood.
Apparent diffusion coefficient Dapp, Cross-relaxation (CR), Diffusion
anisotropy, Free induction decay (FID), Goldman-Shen (GS) experiment, Inverse
Laplace transform (ILT), Inversion recovery (IR) method, NMR, Pulsed field
gradient (PFG) NMR, Spin-lattice (longitudinal) relaxation time T1, Spin-spin
(transverse) relaxation time T2, Stimulated echo (STE), Water, Wood.
Institute of Organic Chemistry Johannes Kepler University Linz 4040 Linz, Austria.