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Journal of Wood Science

Official Journal of the Japan Wood Research Society

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Chemical changes of kenaf core binderless boards during hot pressing (II): effects on the binderless board properties

Journal of Wood Science volume 52, pages 249–254 (2006)Cite this article

Abstract

To provide basic information on self-bonding in kenaf core binderless boards, a series of chemical analyses was conducted on binderless boards and their chemical changes during hot pressing were examined in our previous study. In this study, binderless boards were manufactured under conditions that may accelerate the supposed chemical changes to investigate their effect on the board properties. First, to investigate the influence of the chemical bonds formed by carbonyl compounds on self-bonding, the influence of acetic acid addition prior to board manufacturing was studied and the effect of methanol extractives (containing the carbonyl compounds) was also examined. Second, the influence of the condensation reaction in lignin was discussed from the viewpoint of board density. Last, to examine the influence of thermal softening of lignin, the influences of temperature condition and moisture content, as well as those of microwave pretreatment, were investigated. As a result, the estimated chemical changes were suggested to influence the binderless board properties.

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Authors and Affiliations

  1. Department of Global Agricultural Sciences, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo, 113-8657, Japan

    Nobuhisa Okuda, Keko Hori & Masatoshi Sato

Authors
  1. Nobuhisa Okuda
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  2. Keko Hori
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  3. Masatoshi Sato
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Correspondence to Nobuhisa Okuda.

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Okuda, N., Hori, K. & Sato, M. Chemical changes of kenaf core binderless boards during hot pressing (II): effects on the binderless board properties. J Wood Sci 52, 249–254 (2006). https://doi.org/10.1007/s10086-005-0744-5

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  • DOI: https://doi.org/10.1007/s10086-005-0744-5

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