Effects of Cell Structure on Water Sorption for Wood
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T. Nakano
Summary
Contributions of the cell structure of wood to water sorption were examined using the chemical potential change induced by restrained swelling. Thermodynamic analysis revealed that this potential was proportional to the product of moisture content and the bulk modulus of the restraining region in the wood. The modulus of the restricting region, which was calculated from isotherm curves of wood powder and block samples by using the thermodynamically derived relationship, was near that obtained from the swelling strain and stress in the cross section for whole wood. These results demonstrated that S1 and S3 layers in the cell wall, where thin crystal threads called microfibrils are wound helically in the circumference, act to resist swelling so that the isotherm curve of the block sample was lower than that of wood powder.
Copyright © 2003 by Walter de Gruyter GmbH & Co. KG
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- Book Review/Literature Reports/Addendum
Articles in the same Issue
- Evidence of the Degradation of Middle Lamella in a Waterlogged Archaeological Wood
- Molecular Identity of Species and Isolates of Internal Pore Fungi Antrodia spp. and Oligoporus placenta
- Performance of Waterborne Cu(II) Octanoate/Ethanolamine Wood Preservatives
- Nanoparticles for the Controlled Release of Fungicides in Wood: Soil Jar Studies Using G.Trabeum and T. Versicolor Wood Decay Fungi
- Wood Essential Oils of Juniperus foeticissima Willd
- Structure Elucidation of Condensed Tannins from Barks by Pyrolysis/ Gas Chromatography
- A Density Functional Theory Study of Coniferyl Alcohol Intermonomeric Cross Linkages in Lignin - Three-Dimensional Structures, Stabilities and the Thermodynamic Control Hypothesis
- Inhomogeneities in the Chemical Structure of Spruce Lignin
- Application of ESR Spectroscopy in Bleaching Studies
- Ozone Bleaching of Atmospheric Acetic Acid Hardwood Pulp from Betula platyphylla var. japonica Hara
- Relationship Between Growth Stress, Mechanical-Physical Properties and Proportion of Fibre with Gelatinous Layer in Chestnut (Castanea Sativa Mill.)
- Cambial Growth of Swietenia macrophylla King Studied under Controlled Conditions by High Resolution Laser Measurements
- Selected Properties of Parallel Strand Lumber Made from Southern Pine and Yellow-Poplar
- Effects of Cell Structure on Water Sorption for Wood
- Moisture Dynamics in Norway Spruce and Scots Pine during Outdoor Exposure in Relation to Different Surface Treatments and Handling Conditions
- Book Review/Literature Reports/Addendum
