Summary
Using a mechanical properties microprobe, measurements of hardness and elastic modulus of tracheid walls in the longitudinal direction of spruce wood were obtained by continuously measuring force and displacement as a diamond indenter impressed a cell wall. Maximum mechanical properties were found at the edges of the walls of angular shaped tracheids. Both the hardness and elastic modulus of latewood cell walls were higher than cell walls in the earlywood. The high spatial resolution of this new concept of mechanical testing allows a direct comparison with ultrastructural and microchemical parameters of lignified cells which opens a wider area of applications for the understanding of intrinsic wood properties.
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References
Abe, H., Ohtani, J., Fukazawa, K. 1991: FE-SEM observations on the microfibrillar orientation in the secondary wall of tracheids. IAWA Bull. n.s. 12(4): 431–438
Bodig, J., Jayne, B. A. 1982: Mechanics of wood and wood composites. Van Nostrand Reinhold, New York
Biblis, E. J. 1970: Effect of thickness of microtensile sections on their tensile properties. Wood and Fiber 2(1): 19–31
Bulychev, S. I., Alekhin, V. P., Shorshorov, M.Kh., Ternovskii, A.P. 1976: Mechanical properties of material studied from kinetic diagrams of load versus depth of impression during microimpression. J. Prob. Prochn. 9: 79–83
Bulychev, S. I., Alekhin, V. P. 1987: Method of kinetic hardness and microhardness in testing impression by an indenter. J. Zav. Lab. 53(11): 76–80
Cave, I. D. 1968: The anisotropic elasticity of the plant cell wall. Wood Sci. Technol. 2: 268–278
Denne, M. P. 1989: Definition of latewood according to Mork(1928). IAWA Bull. n.s. 10(1): 59–62
Erickson, H. D., Rees, L. W. 1940: The effect of several chemicals on the swelling and crushing strength of wood. J. Agric. Res. 60(9): 593–603
Fengel, D. 1967: Ultramicrotomy, its application in wood research. Wood Sci. Technol. 1: 191–204.
Gibson, L. J., Ashby, M. F. 1988: Cellular solids. Structure & properties. Pergamon Press
Gillis, P. P. 1969: Effect of hydrogen bonds on the axial stiffness of crystalline native cellulose. J. Polym. Sci. A2(7): 783–794
Grozdits, G. A., Ifju, G. 1969: Development of tensile strength and related properties in differentiating coniferous xylem. Wood Sci. 1(3): 137–147
Hale, J. D., Clermont, L. P. 1963: Influence of prosenchyma cell wall morphology on basic physical and chemical characteristics of wood. J. Polym. Sci. C2: 253–261
Janka, G. 1906: tdie Härte der Hölzer. Cbl. ges. Forstwes. 32(5): 193–202
Jaswon, M. A., Gillis, P. P., Mark, R. E. 1968: The elastic constants of crystalline native cellulose. Proc. Roy. Soc. A306: 389–412
Jayme, G., Fengel, D. 1961: Beobachtungen an Ultradünnschnitten von Fichtenholz. HolzRoh Werkstoff 19(2): 50–55
Kennedy, R. W., Ifju, G. 1962: Applications of microtensile testing to thin wood sections. Tappi 45(9): 725–733
Kollmann, F. F. F., Coté, W. A. Jr. 1968: Principles of wood science and technology. Vol. 1. Solid wood. Berlin, Heidelberg, New York: Springer
Lee, C.L. 1961: Crystallinity of wood cellulose fibers. For. Prod. J. 11: 108–112
Leopold, B., McIntosh, D. C. 1961: Chemical composition and physical properties of wood fibres. III. Tensile strength of individual fibers from alkali extracted loblolly pine holocellulose. Tappi 44(3): 235–240
Mark, R. E. 1967: Cell wall mechanics of tracheids. New Haven, London: Yale University Press.
Oliver, W. C. 1986: Progress in the development of a mechanical properties microprobe. MRS Bull. 11(5): 15–19
Oliver, W. C., Pharr, G. M. 1992: An improved technique for determining hardness and elastic modulus using load and displacement sensing indentation experiments. J. Mater. Res. 7(6): 1564–1583
Page, D. H., El-Hosseiny, F., Winkler, K., Lancaster, A. P. S. 1977: Elastic modulus of single wood pulp fibers. Tappi 60(4): 114–117
Page, T. F., Oliver, W. C., McHargue, C. J. 1992: The deformation behavior of ceramic crystals subjected to very low load (nano) indentations. J. Mater. Res. 7(2): 450–473
Pharr, G. M., Oliver, W. C., Brotzen, F. R. 1992: On the generality of the relationship among contact stiffness, contact area, and elastic modulus during indentation. J. Mat. Res. 7(3): 613–617
Preston, R. D. 1934: The organization of the cell walls in conifer tracheids. Phil. Trans. R. Soc. London 224: 131–136
Salmen, L., de Ruvo, A. 1985: A model for the prediction of fiber elasticity. Wood Fiber Sci. 17(3): 336–350
Saka, S., Whiting, P., Fukazawa, K., Goring, D. A. I. 1982: Comparitative studies on lignin distribution by UV microscopy and bromination combined with EDXA. Wood Sci. Technol. 16: 267–277
Saka, S., Goring, D. A. I. 1983: The distribution of inorganic constitutents in black spruce wood as determined by TEM-EDXA. Mokuzai Gakkaishi 29(10): 648–656
Spurr, A. R. 1969: A low-viscosity epoxy resin embedding medium for electron microscope. J. Ultrastruct. Res. 26: 31–43
Stillwell, N. A., Tabor, D. 1961: Elastic recovery of conical indentations. Proc. Phys. Soc. London 78(2): 169–179
Suzuki, M. 1969: Relation between Young's modulus and the cell wall structures of Sugi (Cryptomeria japonica D. Don). J. Japan Wood Res. Soc. 15(7): 278–284
Treloar, L. R. G. 1960: Calculations of elastic moduli of polymer crystals: III. Cellulose. Polymers 1(3): 290–303
Wardrop, A. B., Dadswell, H. E. 1951: Helical thickenings and micellar orientation in the secondary wall of conifer tracheids. Nature 168: 610
Wellwood, R. W., Ifju, G, Wilson, J. W. 1965: Intra-increment physical properties of certain western Canadian coniferous species. In: Coté, W.A. Jr. Cellular ultrastructure of woody plants. Syracuse University Press
Willems, G., Celis, J. P., Lambrechts, P., Braem, M., Vanherle, G. 1993: Hardness and Young's modulus determined by nanoindentation technique of filler particles of dental restorative materials compared with human enamel. J. Biomed. Mat. Res. 27: 747–755
Wilson, J. W. 1964: Wood characteristics. III. Intra-increment physical and chemical properties. Pulp and Paper Res. Inst. Can. Res. Note No. 45
Wu, Y.-T., Wilson, J. W. 1967: Lignification within coniferous growth zones. Pulp Pap. Mag. Can. 68(4): T159-T164
Ylinen, A. 1943: Über den Einfluß des Spätholzanteiles auf die Brinelhärte des Holzes. Holz-Roh Werkstoff 6: 125–127
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This work was conducted while the senior author was a Visiting Scientist at the Oak Ridge National Lab, Oak Ridge, TN 37831, USA partly with joint fundings from the Austrian Science Foundation (Schrödinger scholarship J799-BIO)
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Wimmer, R., Lucas, B.N., Oliver, W.C. et al. Longitudinal hardness and Young's modulus of spruce tracheid secondary walls using nanoindentation technique. Wood Sci.Technol. 31, 131–141 (1997). https://doi.org/10.1007/BF00705928
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DOI: https://doi.org/10.1007/BF00705928