Abstract
The equilibrium moisture content (EMC) of a wood specimen is known to be a function of the (absolute) temperature T and humidity h of the environment. In the present paper, it is directly derived from equilibrium thermodynamics that EMC is more specifically a function of the water chemical potential μ=RT ln h (Polanyi’s postulate). It is shown that wood moisture thermodynamics then becomes considerably simplified, allowing the calculation of the energy of wood-water interactions from the data of a single-temperature moisture adsorption. A critical comparative analysis on the theoretically calculated adsorption enthalpy and published data, obtained from isosteric and calorimetric measurements, is given. It is deduced from the theory that all bound moisture is non-freezing and that the heat capacities of bound and free wood moisture are equal.
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©2016 Walter de Gruyter GmbH, Berlin/Boston
Articles in the same Issue
- Frontmatter
- Original Articles
- Furfural production from birch hemicelluloses by two-step processing: a potential technology for biorefineries
- Novel cellulose pretreatment solvent: phosphonium-based amino acid ionic liquid/cosolvent for enhanced enzymatic hydrolysis
- Grafting polyethylene glycol dicrylate (PEGDA) to cell walls of poplar wood in two steps for improving dimensional stability and durability of the wood polymer composite
- Development and characterization of a formaldehyde-free adhesive from lupine flour, glycerol, and a novel curing agent for particleboard (PB) production
- Characterization of the adsorption properties of a phosphorylated kraft lignin-based polymer at the solid/liquid interface by the QCM-D approach
- Furfurylated wood: impact on Postia placenta gene expression and oxalate crystal formation
- Equilibrium thermodynamics of wood moisture revisited: presentation of a simplified theory
- Influence of process conditions on hygroscopicity and mechanical properties of European beech thermally modified in a high-pressure reactor system
- Method for the integral calculation of the fiber orientation and the fundamental material properties of softwood logs and lumber
- Interaction between secondary phloem and xylem in gravitropic reaction of lateral branches of Tilia cordata Mill. trees
Articles in the same Issue
- Frontmatter
- Original Articles
- Furfural production from birch hemicelluloses by two-step processing: a potential technology for biorefineries
- Novel cellulose pretreatment solvent: phosphonium-based amino acid ionic liquid/cosolvent for enhanced enzymatic hydrolysis
- Grafting polyethylene glycol dicrylate (PEGDA) to cell walls of poplar wood in two steps for improving dimensional stability and durability of the wood polymer composite
- Development and characterization of a formaldehyde-free adhesive from lupine flour, glycerol, and a novel curing agent for particleboard (PB) production
- Characterization of the adsorption properties of a phosphorylated kraft lignin-based polymer at the solid/liquid interface by the QCM-D approach
- Furfurylated wood: impact on Postia placenta gene expression and oxalate crystal formation
- Equilibrium thermodynamics of wood moisture revisited: presentation of a simplified theory
- Influence of process conditions on hygroscopicity and mechanical properties of European beech thermally modified in a high-pressure reactor system
- Method for the integral calculation of the fiber orientation and the fundamental material properties of softwood logs and lumber
- Interaction between secondary phloem and xylem in gravitropic reaction of lateral branches of Tilia cordata Mill. trees