Flexural Properties, Internal Bond Strength, and Dimensional Stability of Medium Density Fiberboard Panels Made from Hybrid Poplar Clones
Keywords:
Fiberboard, hybrid poplar, modulus of rupture, modulus of elasticity, internal bond, linear expansion, thickness swell, water absorptionAbstract
Flexural properties, internal bond strength, and dimensional stability of medium density fiberboard (MDF) panels made from three hybrid poplar (Populus spp.) clones with codes 915303, 915311, and 915313 were studied. Analysis of variance (ANOVA) and analysis of covariance (ANCOVA) were both performed in this study to test the differences in modulus of rupture (MOR) and modulus of elasticity (MOE) of MDF panels made from the three poplar hybrids. Results indicate that MOR of MDF panels made from clone 915311 was significantly higher than those of panels made from clones 915303 or 915313; however, there was no significant difference in MOR between panels made from clones 915303 or 915313. MOE of MDF panels made from clone 915311 was the highest value, which was significantly different from those of panels made from either clones 915303 or 915313; MOE of panels made from clone 915303 was the smallest and significantly lower than those of panels from clone 915313. MDF panels made from both clones 915303 and 915311 were superior to those panels made from clone 915313 in internal bond (IB) strength; but there was no significant difference in IB between panels made from clones 915303 or 915311. Dimensional stability of MDF panels was evaluated by linear expansion (LE), thickness swell (TS), and water absorption, and no significant differences were found among the three types of panels. This study shows a significant effect of hybrid poplar clonal variation on flexural properties and internal bond strength. This suggests that improvements in MDF panel flexural properties and internal bond strength may be made through tree breeding. Additionally, panel density was a factor influencing MDF panel MOR and MOE considerably; as significant linear relationships between MOR, MOE and panel density were determined.References
American National Standards Institute (ANSI). 2002. Medium Density Fiberboard (MDF) for Interior Application. ANSI A208.2-2002. Composite Panel Association, Gaithersburg, MD.nAmerican Society for Testing and Materials (ASTM). 2001. Evaluating properties of wood-based fiber and particle panel materials. ASTM D 1037-99. Vol. 04.10. ASTM, Philadelphia, PA. Pp. 141-170.nCisneros, H. A., L. Belanger, W. Y. Gee, P. A. Watson, and J. V. Hatton. 2000. Wood and fiber properties of hybrid poplars from southern British Columbia. TAPPI J.83(7):60.nDix, B., V. Thole, and R. Marutzky. 1999. Poplar and eucalyptus wood as raw material for wood-based panels. Pages 93-102 in Eurowood Technical Workshop Proc. Industrial End-uses of Fast-grown Species. CNR/IRL and CNR/ITL. Florence, Italy.nGeimer, R. L. 1986. Properties of structural flakeboard manufactured from 7-year-old intensively cultured poplar, tamarack, and pine. Forest Prod. J.36(4):42-46.nGeimer, R. L., and J. B. Crist. 1980. Structural flakeboard from short-ratation, intensively cultured hybrid populus clones. Forest Prod. J.30(6):42-48.nGroom, L. H., L. Mott, and S. M. Shaler. 1999. Relationship between fibre furnish properties and the structural performance of MDF. Proc. 33rd International Particle-board/Composite Materials Symposium April 13-15, Washington State University, Pullman, WA.nHarless, T. E. G., F. G. Wagner, P. H. Short, R. D. Seale, P. H. Mitchell, and D. S. Ladd. 1987. A model to predict the density profile of particleboard. Wood Fiber Sci.19(1):81-92.nHsu, W. E. 1997. Wood quality requirements for panel products. Timber Management toward Wood Quality and End-product Value. Proc. CTIA/IUFRO International Wood Quality Workshop, Québec City, Canada.nHuitema, B. E. 1980. The analysis of covariance and alternatives. Wiley & Sons, New York, NY.nIvkovich, M. 1996. Genetic variation of wood properties in Balsam poplar (Populus balsamifera L.). Silvae Genet. 45(2/3):119-124.nKelly, M. W. 1977. Critical literature review of relationship between processing parameters and physical properties of particleboard. Gen. Tech. Rep. FPL-10. USDA Forest Serv., Forest Prod. Lab., Madison, WI.nLaw, K., J. Valade, S. Rioux, and R. Lanouette. 1997. Wood and paper properties of five short-rotation poplar clones grown in Québec. Proc. Pulping Conference October 19, 1997 (TAPPI):847-856.nMaloney, T. M. 1993. Modern particleboard and dry-process fiberboard manufacturing. Miller Freeman Publications. San Francisco, CA.nMyers, G. C., and J. B. Crist. 1986. Feasibility of manufacturing hardboard from short-rotation intensively cultured Populus. Forest Prod. J.36(1):37-44.nNelson, N. D. 1973. Effects of wood and pulp properties on medium-density, dry-formed hardboard. Forest Prod. J.23(9):72-80.nOlson, B. D. 1996. Developing wood composites using small diameter timber resources from dense, stagnant stands. M.S. thesis, Washington State University, Pullman, WA.nPeter, J. J., D. A. Bender, M. P. Wolcott, and J. D. Johnson. 2002. Selected properties of hybrid poplar clear wood and composite panels. Forest Prod. J.52(5):45-54.nRoffael, E., and B. Dix. 1994. Mechanical-technological properties of MDF from poplar wood. Holz Roh-Werkst.52(1):48.nSAS/STAT User's Guide. 1990. SAS Institute, Inc. Cary, NC.nSavita, G. 2001. Wood and paper properties of poplar clones. IPPTA.13(4):35-37.nShi, J. L., S. Y. Zhang, and B. Riedl. 2005. Effect of juvenile wood on strength properties and dimensional stability of black spruce medium density fiberboard panels. Holzforschung59(1):1-9.nSuchsland, O., and G. Woodson. 1974. Effect of press cycle variables on density gradient of medium density fibreboard. Pages 375-396 in Proc. 8th Particleboard Symp.nWang, S., P. M. Winistorfer, T. M. Young, and C. Helton. 2001. Step-closing pressing of medium density fibreboard; Part 1: Influences on the vertical density profile. Holz Roh-Werkst.59(1-2):19-26.nWinistorfer, P. M., T. M. Young, and E. Walker. 1996. Modeling and comparing vertical density profiles. Wood Fiber Sci.28(1):133-141.nWoodson, G. E. 1976. Properties of medium-density fiberboard related to hardwood specific gravity. Pages 175-192 in Proc. 10th Washington State University Particleboard Symposium. Pullman, WA.nXing, X. 2000. Genetic variation in wood density of triploid clones of Populus tomentosa. Beijing Linye Daxue Xuebao 22(6):16-20.nZhang, S. Y., R. Gosselin, and G. Chauret. 1997. Wood quality: its definition, impact and implication for value-added timber management and end uses. Timber management toward wood quality and end product value. Proc. CTIA/IUFRO international wood quality workshop, Québec City, Canada.nZhang, S. Y., Q. Yu, G. Chauret, and A. Koubaa. 2003. Selection for both growth and wood properties in hybrid poplar clones. Forest Sci.49(6):1-8.n
Downloads
Published
Issue
Section
License
The copyright of an article published in Wood and Fiber Science is transferred to the Society of Wood Science and Technology (for U. S. Government employees: to the extent transferable), effective if and when the article is accepted for publication. This transfer grants the Society of Wood Science and Technology permission to republish all or any part of the article in any form, e.g., reprints for sale, microfiche, proceedings, etc. However, the authors reserve the following as set forth in the Copyright Law:
1. All proprietary rights other than copyright, such as patent rights.
2. The right to grant or refuse permission to third parties to republish all or part of the article or translations thereof. In the case of whole articles, such third parties must obtain Society of Wood Science and Technology written permission as well. However, the Society may grant rights with respect to Journal issues as a whole.
3. The right to use all or part of this article in future works of their own, such as lectures, press releases, reviews, text books, or reprint books.
