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Creep properties of micron-size domains in ethylene glycol modified wood across 4½ decades in strain rate

Published online by Cambridge University Press:  15 March 2011

Joseph E. Jakes ,
Charles R. Frihart  and
Donald S. Stone
Joseph E. Jakes*
Affiliation:
Materials Science Program, University of Wisconsin-Madison, 1509 University Ave. Madison, WI 53706, USA U.S. Forest Service, Forest Products Laboratory, One Gifford Pinchot Dr. Madison, WI 53726, USA
Charles R. Frihart
Affiliation:
U.S. Forest Service, Forest Products Laboratory, One Gifford Pinchot Dr. Madison, WI 53726, USA
Donald S. Stone
Affiliation:
Materials Science Program, University of Wisconsin-Madison, 1509 University Ave. Madison, WI 53706, USA Department of Materials Science and Engineering, University of Wisconsin-Madison, 1509 University Ave. Madison, WI, USA
*
Corresponding author: jjakes@fs.fed.us
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Abstract

The hardnesses of secondary cell wall laminae (SCWL) and compound corner middle lamellae (CCML) in wood were measured at indentation strain rates between approximately 7×10-4 s-1 and 20 s-1, using a new method called broadband nanoindentation creep. The wood was subsequently modified with ethylene glycol (EG) and the properties were re-measured. The SCWL and CCML responded differently to this modification: in the SCWL, hardness decreased uniformly by a factor of 3.7 ± 0.3 across all strain rates, whereas in CCML, the modification had a similar effect at low strain rates. However, at high strain rates, hardness was only lowered by a factor of 1.8. The EG modification also lowered elastic modulus of the SCWL and CCML, swelled the SCWL and CCML, and caused previously placed indents to disappear (CCML) or partly disappear (SCWL).

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1132: Symposium Z – Mechanics of Biological and Biomedical Materials , 2008 , 1132-Z07-21
Copyright
Copyright © Materials Research Society 2009

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References

REFERENCES

1. Wiedenfoeft, A.C. and Miller, R.B., in Handbook of Wood Chemistry and Wood Composites, edited by Rowell, R.M. (CRC Press, Boca Raton, 2005), p. 9.Google Scholar
2. Rowell, R.M., Pettersen, R., Han, J.S., Rowell, J.S., and Tshabalala, M.A., in Handbook of Wood Chemistry and Wood Composites, edited by Rowell, R.M. (CRC Press, Boca Raton, 2005), p. 35.Google Scholar
3. Kelly, S.S., Rials, T.G., and Glasser, W.G., J. Mater. Sci. 22, 617 (1987).Google Scholar
4. Hansen, C.M. and Björkman, A., Holzforschung 52, 335 (1998).Google Scholar
5. Salmén, L., C.R. Biologies 327, 873 (2004).Google Scholar
6. Hafrén, J., Fujino, T., Itoh, T., Wetermark, U., and Terashima, N., Holzforschung 54, 234 (2000).Google Scholar
7. Wimmer, R. and Lucas, B.N., IAWA J. 18, 77 (1997).Google Scholar
8. Jakes, J.E., Frihart, C. R., Beecher, J. F., Moon, R. J., and Stone, D. S., J. Mater. Res. 23, 1113 (2008).Google Scholar
9. Gindl, W. and Gupta, H.S., Compos. Part A-Appl. Sci. 33, 1141 (2002).Google Scholar
10. Tze, W.T.Y, Wang, S., Rials, T.G., Pharr, G.M., and Kelley, S.S., Compos. Part A-Appl. Sci. 38, 945 (2007).Google Scholar
11. Oliver, W.C. and Pharr, G.M., J. Mater. Res. 7, 1564 (1992).Google Scholar
12. Jakes, J.E., Frihart, C.R., Beecher, J.F., Moon, R.J., Resto, P.J., Melgarejo, Z.H., Suárez, O.M., Baumgart, H., Elmustafa, A.A., and Stone, D.S., Accepted to J. Mater. Res. Google Scholar
13. Stone, D.S. and Yoder, K.B., J. Mater. Res. 9, 2524 (1994).Google Scholar
14. Ishimaru, Y., Narimoto, S., and Iida, I., J. Wood Sci. 47, 171 (2001).Google Scholar
15. Puthoff, J.B., Jakes, J.E., Cao, H., and Stone, D.S., Accepted to J. Mater. Res. Google Scholar
16. Elmustafa, A.A., Kose, S., and Stone, D.S., J. Mater. Res. 22, 926 (2007).Google Scholar
17. Stone, D.S. and Elmustafa, A.A., in Proc. of the Materials Research Society 1049 (Materials Research Society, Pittsburgh, USA, 2007) p. 1049–AA10.Google Scholar
18. Behl, M., and Lendlein, A., Mater. Today 10, 20 (2007).Google Scholar