Strength,decay and termite resistance of oriented kenaf fiberboards |
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| Authors: | Thomas Walther S Nami Kartal Won Joung Hwang Kenji Umemura Shuichi Kawai |
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| Institution: | (1) Voith Paper Technology Center, Paul-Hartmann-Strasse 4, Heidenheim, 89522, Germany;(2) Department of Forest Biology and Wood Protection Technology, Forestry Faculty, Istanbul University, 34473 Istanbul, Turkey;(3) Research Institute for Sustainable Humanosphere, Kyoto University, Kyoto 611-0011, Japan |
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| Abstract: | The development of oriented fiberboards made from kenaf (Hibiscus cannabinus L.) and their suitability as a construction material has been investigated. Three different types of boards consisting of
five layers with individual orientations were prepared using a combination of low molecular weight and high molecular weight
phenol-formaldehyde (PF) resin for impregnation and adhesion purposes. Additional boards with the same structure were prepared
using high molecular weight PF resin only. The mechanical properties of the boards have been examined as well as their resistance
against fungal decay and termite attack. All kenaf fiberboards showed elevated mechanical properties compared with medium-density
fiberboard made from wood fibers, and showed increased decay and termite resistance. Differences in the decay and termite
resistance between the board types were caused by the presence of the low molecular weight PF resin for the impregnation of
the fibers. No significant difference was found for the mechanical properties. The effect of the PF resin for impregnation
was much clearer in fungal decay resistance than for termite resistance; however, fiber orientation had no effect on both
decay and termite resistance of the specimens. |
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| Keywords: | Kenaf fiber Oriented fiberboard Phenol resin Decay resistance Termite resistance |
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