Abstract
In order to study the transverse swelling/shrinkage of wood, the microscopic swelling behavior of latewood tracheid was observed using confocal laser scanning microscopy and the digital image correlation method. A microcrater structure was created on the surface of the specimen by using the ion sputter etching technique to obtain a pattern-rich digital image for image analysis. Douglas fir specimens were conditioned by two methods of absorption: rapid absorption of moisture from hot steam, and slow absorption of moisture from the water vapor of saturated solutions. Latewood tracheid near the surface of the specimen deformed only in the radial direction when the relative humidity of the surrounding air changed rapidly (rapid absorption of moisture from hot steam or absorption/desorption of moisture during the observation). In addition, the diameter of the lumen decreased upon rapid absorption of moisture, whereas it expanded upon slow absorption of moisture. These results indicate that the microscopic swelling behavior of latewood cells is strongly influenced by the macroscopic/mesoscopic structure, for instance, the cell arrangement or the alternation of latewood and earlywood.
Article PDF
Similar content being viewed by others
References
Nakato K (1963) Anisotropy of wood shrikage (in Japanese). J Soc Mater Sci Jpn 12:13–18
Boyd JD (1974) Anisotropic shrikage of wood: identification of the dominant determinants. Mokuzai Gakkaishi 20:473–482
Skaar C (1988) Wood-water relations. Springer, Berlin Heidelberg New York, pp 149–164
Murata K, Ito M, Masuda M (2001) An analysis of the swelling behavior of various woods using an optical microscope and a digital image correlation method (DIC) (in Japanese). J Soc Mater Sci Jpn 50:397–402
Gibson LJ, Ashby MF (1999) Cellular solids: structure and properties. Cambridge University Press, UK, pp 387–428
Watanabe U, Fujita M, Norimoto M (2002) Transverse Young’s moduli and cell shapes in coniferous early wood. Holzforschung 56:1–6
Mikajiri N, Matsumura J, Okuma M, Oda K (2001) Observations by LV-SEM of shrinkage and anisotropy of tracheid cells with desorption (in Japanese). Mokuzai Gakkaishi 47:289–294
Kato H, Nakato K (1968) Transverse anisotropic shrinkage of wood and its relation to the cell wall structure (II) (in Japanese). Kyoto Univ For Bull 40:284–292
Murata K, Masuda M (2001) Observation of the swelling behavior of coniferous cells using a confocal scanning laser microscope and a digital image correlation method. Mater Sci Res Int 7:200–205
Murata K, Masuda M (2001) Observation of microscopic swelling behavior of the cell wall. J Wood Sci 47:507–509
Skaar C (1988) Wood-water relations. Springer, Berlin Heidelberg New York, pp 127–132
Quirk JT (1984) Shrinkage and related properties of Douglas-fir cell walls. Wood Fiber Sci 16:115–133
Bruck HA, McNeill SR, Sutton MA, Peters III WH (1989) Digital image correlation using Newton-Raphson method of partial differential correction. Exp Mech 29:261–267
Saiki H (1970) Proportion of component layers in tracheid wall of early wood and late wood of some conifers (in Japanese). Mokuzai Gakkaishi 16:244–249
Saka S, Thomas RJ (1982) A study of lignification in loblolly pine tracheids by the SEM-EDXA technique. Wood Sci Technol 16:167–179
Kollmann FFP, Côté WA Jr (1968) Principles of wood science and technology I Solid wood. Springer, Berlin Heidelberg New York, pp 204–214
Nakano T (2003) Effects of cell structure on water sorption for wood. Holzforschung 57:213–218
Author information
Authors and Affiliations
Corresponding author
Additional information
Part of this report was presented at the 54th Annual Meeting of the Japan Wood Research Society, Sapporo, August 2004
About this article
Cite this article
Murata, K., Masuda, M. Microscopic observation of transverse swelling of latewood tracheid: effect of macroscopic/mesoscopic structure. J Wood Sci 52, 283–289 (2006). https://doi.org/10.1007/s10086-005-0760-5
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s10086-005-0760-5