Adsorption of Liquids and Swelling of Wood IV. Temperature Dependence on the Adsorption
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Kei Morisato
Summary
For the purpose of understanding the swelling phenomenon of wood in liquids, the contributions of enthalpic and entropic terms to the standard free energy change of adsorption have been determined by measuring the temperature dependence of adsorption isotherms. The values of standard enthalpy change of adsorption are smaller for alcohols having both proton-accepting and -donating properties than for acetone having only a proton-accepting property. The results are discussed in terms of the proton-accepting power and the cohesive energy of the respective adsorbate liquids. Methanol showed a larger isosteric heat of adsorption to dried wood than to pre-swollen wood, and the amounts of methanol and acetone adsorbed on dried wood exceeded those on swollen wood within the low activity range. These results indicate the presence of more exothermic sites in dried wood than in pre-swollen wood, and of pre-existing spaces and/or parts loosely hydrogen-bonded between wood constituents in the cell walls of dried wood.
Copyright © 1999 by Walter de Gruyter GmbH & Co. KG
Articles in the same Issue
- Subject Index
- Author Index
- Species Index
- Contents
- Production of Polygalacturonase and Increase of Longitudinal Gas Permeability in Southern Pine by Brown-Rot and White-Rot Fungi
- Components of Steamed and Non-Steamed Japanese Larch (Larix leptolepis (Sieb. et Zucc.) Gord.) Heartwood Affecting the Feeding Behavior of the Subterranean Termite, Coptotermes formosanus Shiraki (Isoptera: Rhinotermitidae)
- Effect of Soluble Nutrient Content in Wood on its Susceptibility to Soft Rot and Bacterial Attack in Ground Test
- Carboxylic Acids of Moroccan Pinus Pinaster Bark Extract
- What Factors Control Dimerization of Coniferyl Alcohol?
- Atmospheric Acetic Acid Pulping of Rice Straw IV: Physico-Chemical Characterization of Acetic Acid Lignins from Rice Straw and Woods. Part 2. Chemical Structures
- Rapid Determination of the Lignin Content in Sitka Spruce (Picea sitchensis (Bong.) Carr.) Wood by Fourier Transform Infrared Spectrometry
- Lignin Analysis by Permanganate Oxidation. II. Lignins in Acidic Organosolv Pulps
- Lignin Depolymerization in Hydrogen-Donor Solvents
- Species Effects on Wood-Liquefaction in Polyhydric Alcohols
- NMR Analysis of Oxidative Alkaline Extraction Stage Lignins
- Reduction of Weathering Degradation of Wood Through Plasma-Polymer Coating
- VOC Extraction from Softwood Through Low-Headspace Heating
- Localization of Wood Improvement Compounds by Microautoradiography and ESEM
- Laser Ablation of Machined Wood Surfaces. 2. Effect on End-Grain Gluing of Pine (Pinus silvestris L.)
- Multi-Component Mixture Modeling for the Dielectric Properties of Rubber Wood at Microwave Frequencies
- Adsorption of Liquids and Swelling of Wood IV. Temperature Dependence on the Adsorption
- Prevention of Extractive Leaching by Chemical Treatments of Wood Surface
Articles in the same Issue
- Subject Index
- Author Index
- Species Index
- Contents
- Production of Polygalacturonase and Increase of Longitudinal Gas Permeability in Southern Pine by Brown-Rot and White-Rot Fungi
- Components of Steamed and Non-Steamed Japanese Larch (Larix leptolepis (Sieb. et Zucc.) Gord.) Heartwood Affecting the Feeding Behavior of the Subterranean Termite, Coptotermes formosanus Shiraki (Isoptera: Rhinotermitidae)
- Effect of Soluble Nutrient Content in Wood on its Susceptibility to Soft Rot and Bacterial Attack in Ground Test
- Carboxylic Acids of Moroccan Pinus Pinaster Bark Extract
- What Factors Control Dimerization of Coniferyl Alcohol?
- Atmospheric Acetic Acid Pulping of Rice Straw IV: Physico-Chemical Characterization of Acetic Acid Lignins from Rice Straw and Woods. Part 2. Chemical Structures
- Rapid Determination of the Lignin Content in Sitka Spruce (Picea sitchensis (Bong.) Carr.) Wood by Fourier Transform Infrared Spectrometry
- Lignin Analysis by Permanganate Oxidation. II. Lignins in Acidic Organosolv Pulps
- Lignin Depolymerization in Hydrogen-Donor Solvents
- Species Effects on Wood-Liquefaction in Polyhydric Alcohols
- NMR Analysis of Oxidative Alkaline Extraction Stage Lignins
- Reduction of Weathering Degradation of Wood Through Plasma-Polymer Coating
- VOC Extraction from Softwood Through Low-Headspace Heating
- Localization of Wood Improvement Compounds by Microautoradiography and ESEM
- Laser Ablation of Machined Wood Surfaces. 2. Effect on End-Grain Gluing of Pine (Pinus silvestris L.)
- Multi-Component Mixture Modeling for the Dielectric Properties of Rubber Wood at Microwave Frequencies
- Adsorption of Liquids and Swelling of Wood IV. Temperature Dependence on the Adsorption
- Prevention of Extractive Leaching by Chemical Treatments of Wood Surface
