Magnetic Resonance in Studying Natural and Synthetic Materials

Magnetic Resonance in Studying Natural and Synthetic Materials

This book describes nuclear magnetic resonance (NMR) methods which are used to study translational dynamics of molecules in different complex systems including systems made of synthetic and natural ...
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NMR Relaxation and Restricted Self-Diffusion of Water in Wood

Pp. 82-96 (15)

Victor V. Rodin

Abstract

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.

Keywords:

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.

Affiliation:

Institute of Organic Chemistry Johannes Kepler University Linz 4040 Linz, Austria.