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Impedance spectroscopy and circuit modeling of Southern pine above 20% moisture content
-
Samuel L. Zelinka
Veröffentlicht/Copyright:
12. September 2008
Abstract
Impedance spectra were collected from Southern pine (Pinus spp.) equilibrated to a moisture content 20% and a saturated condition. Cylindrical graphite electrodes were embedded in the wood so that they met nearly end-to-end along a line parallel to the grain, and impedance properties were characterized as functions of electrode spacing and electrode contact pressure at frequencies between 1×10-1 and 3×105 Hz. The data exhibit a low-frequency tail that can be fit with a Warburg element, indicative of a diffusive motion of charge carriers. Values of the Warburg impedance were compared with previously published data on molar conductivities of endogenous mineral ions in wood. The data suggest that mineral ions are the predominant charge carriers in wood at low frequencies and high moisture contents based on the strong correlation between the Warburg impedance and molar conductivities.
Keywords: constant phase element; electrical relaxation; electrochemical impedance spectroscopy (EIS); ionic conduction; Warburg impedance
Received: 2008-3-28
Accepted: 2008-7-24
Published Online: 2008-09-12
Published Online: 2008-09-12
Published in Print: 2008-11-01
©2008 by Walter de Gruyter Berlin New York
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Artikel in diesem Heft
- Original Papers
- Soda–AQ delignification of poplar wood. Part 1: Reaction mechanism and pulp properties
- Soda-AQ delignification of poplar wood. Part 2: Further degradation of initially dissolved lignins
- Effect of autohydrolysis of Eucalyptus globulus wood on lignin structure. Part 1: Comparison of different lignin fractions formed during water prehydrolysis
- Effect of autohydrolysis of Eucalyptus globulus wood on lignin structure. Part 2: Influence of autohydrolysis intensity
- Extraction of galactoglucomannan from spruce wood with pressurised hot water
- Determination of ethylenic residues in wood and TMP of spruce by FT-Raman spectroscopy
- Quantitative assessment of total phenol contents of European oak (Quercus petraea and Quercus robur) by diffuse reflectance NIR spectroscopy on solid wood surfaces
- Valence band spectroscopy on lignin
- Analysis of acids and degradation products related to iron and sulfur in the Swedish warship Vasa
- Fenton-induced degradation of polyethylene glycol and oak holocellulose. A model experiment in comparison to changes observed in conserved waterlogged wood
- Towards novel wood-based materials: Chemical bonds between lignin-like model molecules and poly(furfuryl alcohol) studied by NMR
- Manufacture of laminated strand veneer (LSV) composite. Part 1: Optimization and characterization of thin strand veneers
- Manufacture of laminated strand veneer (LSV) composite. Part 2: Elastic and strength properties of laminate of thin strand veneers
- Flexural, in-plane shear and nail shear properties of falcataria-rubberwood laminated veneer board for flooring
- Impedance spectroscopy and circuit modeling of Southern pine above 20% moisture content
- Sorption and thermodynamic properties of juvenile Pinus sylvestris L. wood after 103 years of submersion
- Iron and calcium translocation from pure gypsum and iron-amended gypsum by two brown rot fungi and a white rot fungus
- Ribosomal DNA intergenic spacer of indoor wood-decay fungi
- Short Notes
- Analysis of thermally treated wood samples using dynamic FT-IR-spectroscopy
- Observation of the influence of temperature on the mechanical properties of wood adhesives by nanoindentation
- Book review
- Identification of the timbers of Southeast Asia and the Western Pacific
- Personalia
- Prof. Dr. Olaf Schmidt retired at 65
- Contents Volume 62
- Contents Volume 62 (2008)
- Meeting
- Meetings
- Acknowledgement
- Acknowledgement
- Author index
- Author index
- Species index (scientific names)
- Species index (scientific names)
- Subject index
- Subject index
Schlagwörter für diesen Artikel
constant phase element;
electrical relaxation;
electrochemical impedance spectroscopy (EIS);
ionic conduction;
Warburg impedance
Artikel in diesem Heft
- Original Papers
- Soda–AQ delignification of poplar wood. Part 1: Reaction mechanism and pulp properties
- Soda-AQ delignification of poplar wood. Part 2: Further degradation of initially dissolved lignins
- Effect of autohydrolysis of Eucalyptus globulus wood on lignin structure. Part 1: Comparison of different lignin fractions formed during water prehydrolysis
- Effect of autohydrolysis of Eucalyptus globulus wood on lignin structure. Part 2: Influence of autohydrolysis intensity
- Extraction of galactoglucomannan from spruce wood with pressurised hot water
- Determination of ethylenic residues in wood and TMP of spruce by FT-Raman spectroscopy
- Quantitative assessment of total phenol contents of European oak (Quercus petraea and Quercus robur) by diffuse reflectance NIR spectroscopy on solid wood surfaces
- Valence band spectroscopy on lignin
- Analysis of acids and degradation products related to iron and sulfur in the Swedish warship Vasa
- Fenton-induced degradation of polyethylene glycol and oak holocellulose. A model experiment in comparison to changes observed in conserved waterlogged wood
- Towards novel wood-based materials: Chemical bonds between lignin-like model molecules and poly(furfuryl alcohol) studied by NMR
- Manufacture of laminated strand veneer (LSV) composite. Part 1: Optimization and characterization of thin strand veneers
- Manufacture of laminated strand veneer (LSV) composite. Part 2: Elastic and strength properties of laminate of thin strand veneers
- Flexural, in-plane shear and nail shear properties of falcataria-rubberwood laminated veneer board for flooring
- Impedance spectroscopy and circuit modeling of Southern pine above 20% moisture content
- Sorption and thermodynamic properties of juvenile Pinus sylvestris L. wood after 103 years of submersion
- Iron and calcium translocation from pure gypsum and iron-amended gypsum by two brown rot fungi and a white rot fungus
- Ribosomal DNA intergenic spacer of indoor wood-decay fungi
- Short Notes
- Analysis of thermally treated wood samples using dynamic FT-IR-spectroscopy
- Observation of the influence of temperature on the mechanical properties of wood adhesives by nanoindentation
- Book review
- Identification of the timbers of Southeast Asia and the Western Pacific
- Personalia
- Prof. Dr. Olaf Schmidt retired at 65
- Contents Volume 62
- Contents Volume 62 (2008)
- Meeting
- Meetings
- Acknowledgement
- Acknowledgement
- Author index
- Author index
- Species index (scientific names)
- Species index (scientific names)
- Subject index
- Subject index
