Abstract
The thermal expansion behavior of dry solid wood was investigated by dynamic dilatometry and thermal mechanical analysis. Anomalous thermal expansion behavior was observed concerning the displacement change under a constant compression pressure, which was not previously reported. Wood submitted to temperatures below 0°C under dry conditions exhibited a large increment in the linear thermal expansion coefficient (CLTE) and a sudden drop in the CLTE around 50°C as well as above 130°C during heating. In subsequent cooling/heating processes, these anomalous behaviors remained at temperatures below 100°C, although less pronounced, and disappeared at temperatures above 100°C. These behaviors were clearly perceptible in the radial and tangential directions but not in the longitudinal direction. The CLTE depended strongly on the heat and moisture history of the samples and the effects are species-specific.
Acknowledgments
We would like to express our appreciation to Dr. K. Kojiro and Dr. N. Sobue for their discussions. The present study was supported in part by a Grant-in-Aid for Young Scientists (A) (No. 19688010) from the Ministry of Education, Culture, Sports, Science and Technology of Japan.
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©2014 by Walter de Gruyter Berlin/Boston
Articles in the same Issue
- Frontmatter
- Review Article
- Multistage oxygen delignification of high-kappa pine kraft pulp with peroxymonosulfuric acid (Px)
- Original Articles
- Pyrolysis gas-chromatography mass-spectrometry (Py-GC/MS) to identify compression wood in Pinus radiata saplings
- Cationization of Eucalyptus grandis 4-O-methyl glucuronoxylan for application as a wet-end additive in a papermaking process
- Extractives of mechanically wounded wood and knots in beech
- Complex between lignin and a Ti-based coupling agent
- Synthesis and biological activities of maleated rosin-based dithiourea compounds
- Thermoplastic deformation of poplar wood plasticized by ionic liquids measured by a nonisothermal compression technique
- Anomalous thermal expansion behaviors of wood under dry and low-temperature conditions
- Interfacial properties of magnesium phosphate ceramics and sugar maple (Acer saccharum)
- Off-axis tensile strength and evaluation of the in-plane shear strength of paper
- Migration of cesium chloride dissolved in the liquid water of sugi (Cryptomeria japonica D. Don) during drying at 65°C
- Numerical modeling of timber with knots: the progressively damaged lattice approach vs. the equivalent damaged continuum
- Meetings
- Meetings
Articles in the same Issue
- Frontmatter
- Review Article
- Multistage oxygen delignification of high-kappa pine kraft pulp with peroxymonosulfuric acid (Px)
- Original Articles
- Pyrolysis gas-chromatography mass-spectrometry (Py-GC/MS) to identify compression wood in Pinus radiata saplings
- Cationization of Eucalyptus grandis 4-O-methyl glucuronoxylan for application as a wet-end additive in a papermaking process
- Extractives of mechanically wounded wood and knots in beech
- Complex between lignin and a Ti-based coupling agent
- Synthesis and biological activities of maleated rosin-based dithiourea compounds
- Thermoplastic deformation of poplar wood plasticized by ionic liquids measured by a nonisothermal compression technique
- Anomalous thermal expansion behaviors of wood under dry and low-temperature conditions
- Interfacial properties of magnesium phosphate ceramics and sugar maple (Acer saccharum)
- Off-axis tensile strength and evaluation of the in-plane shear strength of paper
- Migration of cesium chloride dissolved in the liquid water of sugi (Cryptomeria japonica D. Don) during drying at 65°C
- Numerical modeling of timber with knots: the progressively damaged lattice approach vs. the equivalent damaged continuum
- Meetings
- Meetings