Moisture adsorption thermodynamics of wood from fractal-geometry approach
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J. Cao
Abstract
The fractal-geometry approach was used to calculate the thermodynamic properties of moisture sorption by wood from the adsorption isotherms in this study. The results were compared with those from an isosteric approach and a calorimetric approach. The adsorption isotherms of Southern yellow pine (Pinus spp.) were measured at 4, 15, 30, and 40°C to provide source data for the calculation of both fractal-geometry and isosteric approaches. The results show that the fractal dimensions of the internal surfaces of wood vary between 2.4 and 2.5. The curves of the differential heat of adsorption −∆H against moisture content from the fractal-geometry approach are similar to those from calorimetric measurements in previous research. The −∆H values from the isosteric approach increased with moisture content within a moisture content range up to 3%. And, at moisture contents higher than 3%, the −∆H values from this method are much higher than those from the fractal-geometry approach and calorimetric approach. As a result, the fractal-geometry approach is applicable to calculate the differential thermodynamic properties of moisture sorption by wood in future research.
Copyright © 2004 by Walter de Gruyter GmbH & Co. KG
Articles in the same Issue
- The Bremen Cog of 1380 – An electron microscopic study of its degraded wood before and after stabilization with PEG
- Ultrastructure of iodine treated wood
- Effects of refining on the fibre structure of kraft pulps as revealed by FE-SEM and TEM: Influence of alkaline degradation
- Changes in the fiber wall during refining of bleached pine kraft pulp
- An unusual formation of tension wood in a natural forest Acacia sp.
- Changes in the surface properties of wood due to sanding
- Use of near infrared spectroscopy to predict the mechanical properties of six softwoods
- The creep of wood destabilized by change in moisture content. Part 1: The creep behaviors of wood during and immediately after drying
- Modeling the process of desorption of water in oak (Quercus robur L.) wood
- Moisture adsorption thermodynamics of wood from fractal-geometry approach
- Application of ionic liquids for electrostatic control in wood
- Ionic liquids in wood preservation
- New bis-quaternary ammonium and bis-imidazolium chloride wood preservatives
- Environmentally-benign wood preservatives based on an organic biocide:antioxidant combination: Ground-contact efficacy ratings and BHT depletion after four years of exposure
- Production of 2,5-dimethoxyhydroquinone by the brown-rot fungus Serpula lacrymans to drive extracellular Fenton reaction
- Fungal decay resistance of wood reacted with phosphorus pentoxide-amine system
- The use of organo alkoxysilane coupling agents for wood preservation
- Phenolic extractives from wood of birch (Betula pendula)
- Stability of arylglycerols during alkaline cooking
Articles in the same Issue
- The Bremen Cog of 1380 – An electron microscopic study of its degraded wood before and after stabilization with PEG
- Ultrastructure of iodine treated wood
- Effects of refining on the fibre structure of kraft pulps as revealed by FE-SEM and TEM: Influence of alkaline degradation
- Changes in the fiber wall during refining of bleached pine kraft pulp
- An unusual formation of tension wood in a natural forest Acacia sp.
- Changes in the surface properties of wood due to sanding
- Use of near infrared spectroscopy to predict the mechanical properties of six softwoods
- The creep of wood destabilized by change in moisture content. Part 1: The creep behaviors of wood during and immediately after drying
- Modeling the process of desorption of water in oak (Quercus robur L.) wood
- Moisture adsorption thermodynamics of wood from fractal-geometry approach
- Application of ionic liquids for electrostatic control in wood
- Ionic liquids in wood preservation
- New bis-quaternary ammonium and bis-imidazolium chloride wood preservatives
- Environmentally-benign wood preservatives based on an organic biocide:antioxidant combination: Ground-contact efficacy ratings and BHT depletion after four years of exposure
- Production of 2,5-dimethoxyhydroquinone by the brown-rot fungus Serpula lacrymans to drive extracellular Fenton reaction
- Fungal decay resistance of wood reacted with phosphorus pentoxide-amine system
- The use of organo alkoxysilane coupling agents for wood preservation
- Phenolic extractives from wood of birch (Betula pendula)
- Stability of arylglycerols during alkaline cooking
