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Title: Resol Resins Prepared with Tannin Liquified in Phenol

Source: Holzforschung / Vol. 49 / 1995 / No. 2

Author(s)Santana, Marcos A. E.; Baumann, Melissa G. D.; Conner, Anthony H.

Publication Year: 1995  View PDF »

Category: Journal Articles

Abstract: An alternative to phenol, a petroleum-based nonrenewable resource, in phenol-formaldehyde resins must be developed to support the wood-based panel industry. Tannins are the best substitute for phenol in this case. Tannin from black wattle (Acacia mearnsii) can be liquified with phenol in the presence of an acid catalyst. In this study, tannin replaced 33 percent of the phenol in the preparation of resol-type plywood adhesives. Loblolly pine (Pinus taeda) plywood bonded with the liquified tannin resin had strengths and wood failures that were comparable to commercial phenol-formaldehyde adhesives and significantly better than unmodified tannin-formaldehyde adhesives when used to bond Southern Pine under boding conditions commonly employed with phenol-formaldehyde resins.

Keywords: Tannin, Dissolved tannin, Phenol-formaldehyde, Plywood, Wattle Tannin
Current FPL Scientist associated with this product
Baumann, Melissa G.
Research Chemist
  

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