Abstract
The wood moisture sorption (WMS) isotherm is generally considered to contain information on the water-cell wall interaction and the abundance of water sorption sites (SSs) in wood. The Hailwood-Horrobin (HH) model – as an example of the multilayer surface sorption models – is discussed for its suitability to analyze experimental WMS isotherms, to elaborate the fundamental sorption parameters. Based on multiple independent experimental and theoretical arguments, it was concluded that the basics of the surface multilayer-sorption models do not apply to wood. This is clearly illustrated by applying the analysis to the temperature-dependence of WMS isotherms, to the comparison of adsorption vs. desorption isotherms and to the quantification of SSs in wood. A sorption site occupancy (SSO) model is presented as an alternative for the HH model. It provides a comprehensive, thermodynamically consistent and quantitative basis for the analysis of WMS isotherms. The predicted SS densities are realistic and can be used to quantify sorption hysteresis and cell wall relaxation.
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©2015 by De Gruyter
Artikel in diesem Heft
- Frontmatter
- Original Articles
- Influence of spruce xylan characteristics on tensile strength of spruce kraft pulp
- Evidence for a very slow disaggregation of lignosulfonates
- Slow relaxation mode of sodium lignosulfonate in saline solutions
- Influence of carboxylic group content on the solution behavior of carboxymethylated lignin (CML) in water
- Chemithermomechanical and kraft pulping of Pinus radiata wood chips after the hydrothermal extraction of hemicelluloses
- In-plane shear strength of paper measured by asymmetric four-point bending test
- Strain distribution and load transfer in the polymer-wood particle bond in wood plastic composites
- Structural changes in spruce wood during different steps of steam explosion pretreatment
- A critical review of the multilayer sorption models and comparison with the sorption site occupancy (SSO) model for wood moisture sorption isotherm analysis
- Hygric properties of Norway spruce and sycamore after incubation with two white rot fungi
- On-line monitoring of hygroscopicity and dimensional changes of wood during thermal modification by means of neutron imaging methods
- Influence of blue stain on density and dimensional stability of Pinus radiata timber from northern Galicia (Spain)
- Bacterial and abiotic decay in waterlogged archaeological Picea abies (L.) Karst studied by confocal Raman imaging and ATR-FTIR spectroscopy
- Effects of vitamin E combined with antioxidants on wood flour/polypropylene composites during accelerated weathering
- Short Note
- Tensile behaviour and fracture mechanism of moso bamboo (Phyllostachys pubescens)
- Lignin masks the presence of fibrillar network structure in the cell corner middle lamella (CCML)
Artikel in diesem Heft
- Frontmatter
- Original Articles
- Influence of spruce xylan characteristics on tensile strength of spruce kraft pulp
- Evidence for a very slow disaggregation of lignosulfonates
- Slow relaxation mode of sodium lignosulfonate in saline solutions
- Influence of carboxylic group content on the solution behavior of carboxymethylated lignin (CML) in water
- Chemithermomechanical and kraft pulping of Pinus radiata wood chips after the hydrothermal extraction of hemicelluloses
- In-plane shear strength of paper measured by asymmetric four-point bending test
- Strain distribution and load transfer in the polymer-wood particle bond in wood plastic composites
- Structural changes in spruce wood during different steps of steam explosion pretreatment
- A critical review of the multilayer sorption models and comparison with the sorption site occupancy (SSO) model for wood moisture sorption isotherm analysis
- Hygric properties of Norway spruce and sycamore after incubation with two white rot fungi
- On-line monitoring of hygroscopicity and dimensional changes of wood during thermal modification by means of neutron imaging methods
- Influence of blue stain on density and dimensional stability of Pinus radiata timber from northern Galicia (Spain)
- Bacterial and abiotic decay in waterlogged archaeological Picea abies (L.) Karst studied by confocal Raman imaging and ATR-FTIR spectroscopy
- Effects of vitamin E combined with antioxidants on wood flour/polypropylene composites during accelerated weathering
- Short Note
- Tensile behaviour and fracture mechanism of moso bamboo (Phyllostachys pubescens)
- Lignin masks the presence of fibrillar network structure in the cell corner middle lamella (CCML)