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- Title
Surface Properties of Pine Scrimber Panels with Varying Density.
- Authors
Wei, Jinguang; Lin, Qiuqin; Zhang, Yahui; Yu, Wenji; Hse, Chung-Yun; Shupe, Todd
- Abstract
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.
- Subjects
SURFACE properties; CONTACT angle; X-ray photoelectron spectroscopy; SURFACE energy; DENSITY; PINACEAE
- Publication
Coatings (2079-6412), 2019, Vol 9, Issue 6, p397
- ISSN
2079-6412
- Publication type
Article
- DOI
10.3390/coatings9060397