| Autor: |
McConnell, T. Eric, Shi, Sheldon Q. |
| Předmět: |
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| Zdroj: |
Journal of Adhesion; Apr2011, Vol. 87 Issue 4, p353-365, 13p, 1 Black and White Photograph, 4 Charts, 2 Graphs |
| Abstrakt: |
The effects of a partial hydrolysis treatment on the surface energies of three southern hardwood species, red oak, sweetgum, and yellow-poplar were examined. Miniature beams machined to 3 × 15 × 150 mm (t × r × l) were water-saturated and subjected to a partial hydrolysis at 150°C for 30 min in 1% sulfuric acid, water, or 1% sodium hydroxide solutions. Untreated wood beams were used as controls. Dynamic contact angle specimens were planed from the beams to a thickness of 0.25 mm and cut to a length of 15 mm for analysis via the Wilhelmy plate technique. Surface energies for the wood/treatment combinations were calculated using the geometric mean procedure. Results indicated that acid and water treatments improved the wettability for all species. Alkaline treatment effects were species-specific. All treatments improved the surface energy of red oak. The dispersive forces accounted for the majority of the surface energies. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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