RossiRossiMorinEtAl2012
Référence
Rossi, D., Rossi, S., Morin, H., Bettero, A. (2012) Within-tree variations in the surface free energy of wood assessed by contact angle analysis. Wood Science and Technology, 46(1-3):287-298. (Scopus 
)
Résumé
Although the heterogeneity of wood could preclude assessment of the performances of adhesion, the within-tree variations in its thermodynamic properties still remain unexplored. This study analyzed the surface free energy of wood (γ W ) calculated by the geometric mean approach along the radius and at different sampling heights in black spruce and balsam fir with a statistical model, employing apparent contact angles of three testing liquids. Sampling height and species affected the apparent contact angles, and consequently the polar (γ W P) and dispersed (γ W D) components of γ W, but no significant difference was observed along the radius. On average, γ W was 43.77 mJ m -2 at the stem base and gradually decreased, attaining 27.19 mJ m -2 at 14 m of height. γ W P was markedly higher than γ W D with an opposite pattern along the tree height. These findings demonstrated the huge variability in γ W along the stem, which could be related to the structural or chemical features of wood. © 2011 Springer-Verlag.
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@ARTICLE { RossiRossiMorinEtAl2012,
AUTHOR = { Rossi, D. and Rossi, S. and Morin, H. and Bettero, A. },
TITLE = { Within-tree variations in the surface free energy of wood assessed by contact angle analysis },
JOURNAL = { Wood Science and Technology },
YEAR = { 2012 },
VOLUME = { 46 },
PAGES = { 287-298 },
NUMBER = { 1-3 },
ABSTRACT = { Although the heterogeneity of wood could preclude assessment of the performances of adhesion, the within-tree variations in its thermodynamic properties still remain unexplored. This study analyzed the surface free energy of wood (γ W ) calculated by the geometric mean approach along the radius and at different sampling heights in black spruce and balsam fir with a statistical model, employing apparent contact angles of three testing liquids. Sampling height and species affected the apparent contact angles, and consequently the polar (γ W P) and dispersed (γ W D) components of γ W, but no significant difference was observed along the radius. On average, γ W was 43.77 mJ m -2 at the stem base and gradually decreased, attaining 27.19 mJ m -2 at 14 m of height. γ W P was markedly higher than γ W D with an opposite pattern along the tree height. These findings demonstrated the huge variability in γ W along the stem, which could be related to the structural or chemical features of wood. © 2011 Springer-Verlag. },
COMMENT = { Export Date: 20 February 2012 Source: Scopus CODEN: WOSTB doi: 10.1007/s00226-011-0407-1 },
ISSN = { 00437719 (ISSN) },
OWNER = { Luc },
TIMESTAMP = { 2012.02.20 },
URL = { http://www.scopus.com/inward/record.url?eid=2-s2.0-84855793240&partnerID=40&md5=3bcf1e2ed45c3f6b56012024f588cfce },
}
