publication . Article . 2011

Enhanced Mechanical Properties of Poplar Wood by a Combined-Hydro-Thermo-Mechanical (CHTM) Modification

Houri Sharifnia; Behbood Mohebbi;
Open Access Persian
  • Published: 01 Jan 2011 Journal: Iranian Journal of Wood and Paper Industries (issn: 2008-9066, eissn: 2423-3242, Copyright policy)
  • Publisher: Iranian Scientific Association of Wood and Paper Industries
The current research explains an innovated technique to enhanced mechanice properties of poplar wood by combination of two modification techniques, hydrothermal and mechanical. Blocks of 50×55×500mm3 were cut from poplar wood and treated in a reactor at 120, 150 and 180°C for 30 min. Afterwards, the blocks were pressed at 180°C for 20 min at a pressure of 80 bar to achieve a compression set of 60% in radial direction. Density and bending properties (moduli of elasticity and rupture) as well as impact resistance were determined in the specimens and compared with those of the untreated one. Results revealed that the density, modulus of elasticity and impact load r...
Medical Subject Headings: technology, industry, and agriculture
free text keywords: Forestry, SD1-669.5, Printmaking and engraving, NE1-978
Agricultural and Food Sciences
Rural Digital Europe

8- Ito, Y., Tanahashi, M., Shigematsu, M. and Shinoda, Y., 1998b. Compressive-molding of wood by high-pressure steam-treatment: II. Mechanism of permanent fixation, Holzforchung Vol. 52 (2): 217- 221.

9- Ito, Y., Tanahashi, M., Shigematsu, M., Shinoda, Y. and Ohta, C., 1998a. Compressive- molding of wood by high -pressure steam -treatment: I. Development of compressive molded squares from thinning, Holzforchung Vol. 52 (2): 211-216.

10- Jennings, J.D., 2003. Investigation the Surface Energy and Bond Performance of Compression Densified Wood, M. Sc. Thesis, Virginia Polymeric Institute and State University: 147 p.

11- Kollman, F.P., Kuenzi, E.W. and Stamm, A.J., 1975. Principle of Wood Science and Technology, Vol. ΙΙ Wood Based Materials, 1st ed. Springer-Verlag Newyork, Heidelberg, Berlin: 703 p.

12- Kultikova, E.V., 1999. Structure and Properties Relationships of Densified Wood, M. Sc. Thesis, Virginia Polytechnic Institute and State University, 139 p.

13- Morsing, N., 2000. The influence o f hydrothermal treatment on compression of beech perpendicular to grain, Ph.D. Thesis, Department of Structural Engineering and Materials, Technical University: 137 p.

14- Mohebby, B. and Sanaei, I., 2005. Influences of the hydro-thermal treatment on physical properties of beech wood (Fagus orientalis), The International Research Group on Wood Preservation, IRG Document No.: IRG/WP 05-40303.

15- Navi, P. and Girardet, F., 2000. Effects of thermo-hydro-mechanical treatment on the structure and properties of wood, Holzforschung 54 (3): 287-293. [OpenAIRE]

16- Rowell, R. M., 2005. Handbook of Wood Chemistry and Wood Composites, 2nd ed. CRC Press, London: 378 p.

20- Tjeerdsma, B.F., Stevens, M. and Militz, H., 2000. Durability aspects of hydrothermally treated wood, The International Research Group on Wood Preservation, IRG Document No. IRG/WP 00- 40160.

21- Wallenberger, F.T. and Weston, N., 2004. Natural Fibers, Plastic and Composites, 1st Ed.

Springer, Berlin: 392 p.

22- Welzbacher C.R., Rapp A.O., Hallel P. and Wehsener J., 2005. Biological and mechanical properties of densified and thermally modified Norway Spruce. In: The second European Conference on Wood Modification. Oct 6-7 Göttingen,Germany:20-27.

23- Yildiz, S. and Gümüskaya, E., 2007. The effect of thermal modification on crystalline structure of cellulose in soft and hardwood, Building and Environment 42(4): 62-67. [OpenAIRE]

Any information missing or wrong?Report an Issue