Surface properties of pine scrimber panels with varying density

  • Authors: Wei, Jinguang; Lin, Qiuqin; Zhang, Yahui; Yu, Wenji; Hse, Chung-Yun; Shupe, Todd
  • Publication Year: 2019
  • Publication Series: Scientific Journal (JRNL)
  • Source: Coatings
  • DOI: 10.3390/coatings9060397


Coating quality for scrimber products against exterior conditions is largely dependent on the surface properties. The wettability, morphology, and chemical composition of pine scrimber surfaces were investigated to better understand the surface properties. The scrimber was found to be a hydrophilic material because the water contact angles were less than 90. The panels with a density of 1.20 g/cm3 had the largest angle change rate (k = 0.212). As the panel density increased, the instantaneous contact angle of each test liquid (i.e., water, formamide, and diiodomethane) on the panels decreased, and so did surface free energy. Panels with higher density showed lower surface roughness. Surface roughness across the wood grain was greater than that along the grain. SEM observations showed the high-density panels had a smoother surface with fewer irregular grooves in comparison with the low-density panels. X-ray photoelectron spectroscopy (XPS) analysis indicated that more unoxygenated groups appeared on the surface of high-density panels.

  • Citation: Wei, Jinguang; Lin, Qiuqin; Zhang, Yahui; Yu, Wenji; Hse, Chung-Yun; Shupe, Todd. 2019. Surface properties of pine scrimber panels with varying density. coatings. 9(6): 397-.
  • Keywords: scrimber, density, wettability, roughness, SEM, XPS
  • Posted Date: July 23, 2019
  • Modified Date: September 1, 2020
  • 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.