Utilization of Chinese tallow tree and bagasse for medium density fiberboard

  • Authors: Lee, Sangyeob; Shupe, Todd F.; Hse, Chung Y.
  • Publication Year: 2004
  • Publication Series: Miscellaneous Publication
  • Source: Forest Products Journal, 54(12):71-76


The objective of this research was to investigate various adhesive systems and determine the best composite formulation for selected mechanical and physical properties of medium density fiberboard (MDF) made from wood and bagasse fibers. This study investigated opportunities ofbiomass utilization for natural fiber-based composites from agricultural (bagasse) and Chinese tallow tree (Sapiurn sebijerum) fibers. The mixing ratios were 100:0,75:25,50:50,25:75, and 0: 100 ofbagasse and tallow tree fiber, and the firnish moisture content (MC) was 4 percent. The resin systems used were 8 percent urea formaldehyde (UF), 2.5 percent MDI (4,4'-diphenylmethane diisocyanate), and amixed resin system of 1 percent MDI and4 percent UF. Panels containing 100 percent bagasse furnish were also prepared with either 3.5 percent or 4.5 percent MDI at a furnish MC of 0 percent, 4 percent, and 8 percent. Two mixing combinations (50:50 and 25:75) of bagasse/tallow tree fibers yielded mechanical and physical properties which were not statistically different from higher proportions ofSapium fibers and provided the maximum utilization of bagasse fibers into the panels. The MC of the furnish and additional moisture from the resin applications were significant factors influencing the mechanical properties ofthe composites. MDF made from 8 percent MC bagasse fibers obtained a 63 percent increase in modulus ofrupture (MOR) and a 30 percent in modulus of elasticity (MOE) compared to composites manufactured with 0 percent MC furnish. Panels at all fiber combination ratios with the mixed resin system performed superior to all furnish mixes with 4.5 percent MDI for MOR and MOE. Internal bond (IB) test results showed that the mixed resin system yielded slightly lower IB mean values than panels produced with 4.5 percent MDI.

  • Citation: Lee, Sangyeob; Shupe, Todd F.; Hse, Chung Y. 2004. Utilization of Chinese tallow tree and bagasse for medium density fiberboard. Forest Products Journal, 54(12):71-76
  • Posted Date: April 1, 1980
  • Modified Date: May 3, 2007
  • Print Publications Are No Longer Available

    In an ongoing effort to be fiscally responsible, the Southern Research Station (SRS) will no longer produce and distribute hard copies of our publications. Many SRS publications are available at cost via the Government Printing Office (GPO). Electronic versions of publications may be downloaded, printed, and distributed.

    Publication Notes

    • This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.
    • Our online publications are scanned and captured using Adobe Acrobat. During the capture process some typographical errors may occur. Please contact the SRS webmaster if you notice any errors which make this publication unusable.
    • To view this article, download the latest version of Adobe Acrobat Reader.