Nuclear Magnetic Resonance Studies of Water Sorbed on Fibrous Materials

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概要

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• Nuclear magnetic resonance of the water molecules sorbed on the native cellulose, "mulbery paper" was studied. The measurements of the line width were made under the condition of water content ranging from 10 to 180% at 20℃, by using Varian high resolution type spectrometer. Within the range of 10 to 20%, the line widths rapidly decreased with increasing water content, and gradually decreased beyond the region. Although this tendency was similar to that of dielectric relaxation, the experimental value of τ_N obtained from Kubo-Tomita equation was much greater in the order of magnitude than that of the dielectric relaxation time τ_D. Accordingly, τ_N and τ_D do not satisfy the BPP's relation of τ_N = 1/3・τ_D. This result suggested to us that the water molecules in the sorbed state do not rotate with spherical symmetry like in the liquid state.

• 社団法人日本物理学会の論文
• 1959-03-05

著者

• Odajima Akira

  Research Institute Of Applied Electricity Hokkaido University

関連論文

• Measurement of Temperature Dependence of T_1 of Proton in Some High Polymers by Pulsed NMR Technique
• Proton Magnetic Resonance in Chain Polymers
• Nuclear Magnetic Resonance Studies of Water Sorbed on Fibrous Materials
• Study of Segmental Motion in Polymer Solutions by Nuclear Magnetic Resonance
• Effects of Distribution of Correlation Times upon T_1 and T_2 in Nuclear Magnetic Resonance
• A Study of Sorbed Water on Cellulose by Pulsed NMR Technique

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