An investigation of factors affecting wettability of some southern hardwoods

  • Authors: Shupe, Todd F.; Hse, Chung Y.; Wang, Wan H.
  • Publication Year: 1999
  • Publication Series: Miscellaneous Publication
  • Source: In: Christiansen, Alfred W.; Pilato, Louis A. International contributions to wood adhesion research; Proceedings no. 7267. Madison, WI: Forest Products Society: 132-136.

Abstract

>Wettability of sanded and nonsanded transverse and tangential sections of 22 southern hardwood species were[was] judged by measurement of contact angles using phenol-formaldehyde resins. As ex­pected, contact angle values on transverse sec­tions were higher than on tangential sections for both sanded and nonsanded surfaces. On sanded surfaces, hackberry had the highest mean contact angle (64.7°), and black oak had the lowest mean contact angle (50. 1°). On nonsanded surfaces, winged elm had the highest mean contact angle (59. 1°), and sweetgum had the lowest mean con­tact angle (45.9°). In addition, 4 of the 22 species (southern red oak, sweetgum, white oak, and post oak) were selected to investigate the effect of ovendrying, air-drying, and freeze-drying on wetta­bility. The mean transverse contact angle was 2.1° to 29.0° and 5.1° to 31.5° higher than radial and tangential values, respectively. The contact angle pattern typically displayed for a given species and plane was generally ovendry > air-dry > freeze-dry. The species pattern for most drying methods and planes was: sweetgum > white oak > post oak > southern red oak. White oak and post oak gave similar contact angle values.

  • Citation: Shupe, Todd F.; Hse, Chung Y.; Wang, Wan H. 1999. An investigation of factors affecting wettability of some southern hardwoods. In: Christiansen, Alfred W.; Pilato, Louis A. International contributions to wood adhesion research; Proceedings no. 7267. Madison, WI: Forest Products Society: 132-136.
  • Posted Date: April 1, 1980
  • Modified Date: August 22, 2006
  • Requesting Print Publications

    Publication requests are subject to availability. Fiscal responsibility limits the hardcopies of publications we produce and distribute. Electronic versions of publications may be downloaded, distributed and printed.

    Please make any requests at pubrequest@fs.fed.us.

    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.