Abstract
Transverse swelling and its anisotropy in hinoki (Chamaecyparis obtusa) in several kinds of organic liquids and in water were investigated by means the replica method. There was more cross-sectional swelling of cell walls and cell wall thickness in earlywood than in latewood. Marked swelling toward cell lumens was observed in wood swollen in liquids that had higher swelling potentials than water. This suggests that the swelling of cell walls in these liquids is much greater than the external swelling. Feret's diameters of the cell lumens were reduced by swelling in all the observed cases except in the tangential direction of earlywood, suggesting that cell walls swell to a much less extent in width than in thickness. Deformation of cell shapes caused by the tensile force from the latewood were observed in the earlywood and in the transitional region from earlywood to latewood. When swollen in water, transverse swelling anisotropy caused only by the swelling in cell wall thickness were calculated to be 1.2 for the whole region over an annual ring and 1.4 for the earlywood. These values could not account for the external swelling anisotropy of 2.1. Considering obvious deformations of cell shapes in the earlywood and in the transitional region, we conclude that the interaction between earlywood and latewood is one of the prime factors contributing to the transverse swelling anisotropy of coniferous wood.
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Mörath E (1939) Studien über die hygroskopishen Eigenschften und die Hërte der Hölzer. Mitt. Holz Forschst, Darmstadt, pp 1–56
Pentony ER (1953) Mechanism affecting tangential vs. radial shrinkage. J For Prod Res Soc 3:27–32
McIntosh DC (1957) Transverse shrinkage of red oak and beech. For Prod J 7:114–120
Barber NF, Meylan BA (1964) The anisotropic shrinkage of wood: a theoretical model. Holzforshung 18:146–156
Bosshard HH (1956) Über die Anisotropie der Holzschwindung. Holz Roh Werkstoff 14:285–295
Kato H, Nakato K (1968) The transverse anisotropic shrinkage of wood and its relation to the cell wall structure. I. The lignin distribution in the radial and tangential walls of coniferous wood tracheids (in Japanese). No 40:284–292
Boyd JD (1974) Anisotropic shrinkage of wood: Identification of the dominant determinants. Mokuzai Gakkaishi 20:473–782
Nakato K (1958) On the cause of the anisotropic shrinkage and swelling of wood. VIII. On the relationships between the microscopic structure and the anisotropic shrinkage in the transverse section (in Japanese). Mokuzai Gakkaishi 4:100–105
Nakato K, Kajita S (1955) On the cause of the anisotropic shrinkage and swelling of wood. VI. On the relationships between the annual ring and the anisotropic shrinkage (in Japanese). J Jpn For Soc 37:22–25
Watanabe U, Fujita M, Norimoto M, Gril J (1998) Transverse shrinkage anisotropy of coniferous wood investigated by the power spectrum analysis. J Wood Sci 44:9–14
Adachi A, Ishimaru Y, Fujita M, Sadoh T (1989) Swelling anisotropy of wood in organic liquids. II. Transverse swelling behavior revealed by the replica method (in Japanese). Mokuzai Gakkaishi 35:689–695
Ishimaru Y, Adachi A (1988) Swelling anisotropy of wood in organic liquids, I. External swelling and its anisotropy (in Japanese). Mokuzai Gakkaishi 34:200–206
Nakato K (1962) Shrinkage anisotropy of wood (in Japanese). Mokuzai Kogyo 17:305–309
Watanabe U, Norimoto M, Ohogama T, Fujita M (1998) Tangential Young's modulus of coniferous early wood investigated using cell models. Holzforschung 53:209–214
Nakato K (1958) On the cause of the anisotropic shrinkage and swelling of wood. VII. On the anisotropic shrinkage in transverse section of the isolated springwood and summerwood (in Japanese). Mokuzai Gakkaishi 4:94–100
Nakato K (1958) On the cause of the anisotropic shrinkage and swelling of wood. IX. On the relationship between the microscopic structure and the anisotropic shrinkage in transverse section (2) (in Japanese). Mokuzai Gakkaishi 4:134–141
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Ishimaru, Y., Iida, I. Transverse swelling behavior of hinoki (Chamaecyparis obtusa) revealed by the replica method. J Wood Sci 47, 178–184 (2001). https://doi.org/10.1007/BF01171219
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DOI: https://doi.org/10.1007/BF01171219