Water Absorption and Contact Angle Measurement of Native European, North American and Tropical Wood Species to Predict Gluing Properties

Boehme, C.; Hora, Guido

doi:10.1515/hfsg.1996.50.3.269

Cited by 31 publications

(23 citation statements)

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“…Buyuksari et al (2011) obtained the contact angle from the average of measurements over a 10-s period to investigate the wettability and surface roughness of natural and plantation-grown narrow-leaved ash wood. Boehme and Hora (1996) observed that the contact angle decreased with the square root of time, while Shi and Gardner (2001) proposed a Shi-Douglas wetting model (S-D model) that is commonly used to evaluate the dynamic wetting process.…”

Section: Introductionmentioning

confidence: 99%

Wettability of Sanded and Aged Fast-growing Poplar Wood Surfaces: II. Dynamic Wetting Models

et al. 2014

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The dynamic wettability of adhesive on sanded and aged wood surfaces was measured using the sessile drop method. Four different models were used to evaluate and compare the wetting process. It was shown that the wettability of freshly sanded wood and aged wood both decreased compared to the control wood. There was no evidence of change in wettability with increasing grit number. Aging reduced the wettability of the wood surface. The coefficients of determination (R 2 ) for all four models were over 90%, and that of the Modified model was 99%. The models can be used to accurately describe the adhesive wetting process. The wettability of water and adhesive on the fresh surface were different, and the wettability of the adhesive increased as grit number increased. On the contrary, the wettability of water decreased as grit number increased, and the same trend was found for the water and the adhesive on the aged wood surface. Advantages and disadvantages were found for each model, but the Modified model needs to be verified by additional experiments.

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Section: Introductionmentioning

confidence: 99%

Wettability of Sanded and Aged Fast-growing Poplar Wood Surfaces: II. Dynamic Wetting Models

et al. 2014

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“…References for the Data Given in Table 1 Picea abies (Kramer et al 1988;Hasler et al 1994;Boehme and Hora 1996;Mantanis and Young 1997;Nurmi 1997;Bergh et al 1999;Nussbaum 1999;de Meijer et al 2000;Lässig and Močalov 2000;Balode et al 2002;Schulze et al 2002;Matthews and Mackie 2006;Rutz et al 2006;Kaltschmitt et al 2009;Sernek et al 2010;Günther et al 2012;Karl 2012;Navi and Sandberg 2012;EngineeringToolBox 2013) Pinus sylvestris (Bray 1963;Kramer et al 1988;Hasler et al 1994;Wilén et al 1996;Nurmi 1997;Nussbaum 1999;Lässig and Močalov 2000;Schulze et al 2002;Xiao et al 2003;Mohammed-Ziegler et al 2004;Kaltschmitt et al 2009;Karl 2012;Navi and Sandberg 2012;Sedighi et al 2012) Abies alba (Bray 1963;Kramer et al 1988;Becker 1989;de Meijer et al 2000;Lässig and Močalov 2000;Schulze et al 2002;Macias et al 2006;Matthews and Mackie 2006;Wagenführ 2007;…”

Section: Methodsunclassified

“…(Bray 1963;Kramer et al 1988;Paavilainen and Torgilsson 1994;Syrjanen et al 1994;Nurmi 1997;Lässig and Močalov 2000;Schulze et al 2002;Stener and Hedenberg 2003;Matthews and Mackie 2006;Wagenführ 2007;Kaltschmitt et al 2009;Sernek et al 2010;Günther et al 2012;Karl 2012;Viöl et al 2012;EngineeringToolBox 2013;PaperonWeb 2013) Alnus glutinosa (Kramer et al 1988;Nurmi 1997;Johansson 2000;Schulze et al 2002;Mohammed-Ziegler et al 2004;Wagenführ 2007;Kaltschmitt et al 2009;Kiaei and Samariha 2011;Karl 2012) Populus spp. (Boehme and Hora 1996;Diamantidis and Koukios 2000;Barsoum 2001;Deiller et al 2001;Benetka et al 2002;Laureysens et al 2003;Helle and Schleser 2004;Matthews and Mackie 2006;Rutz et al 2006;Wagenführ 2007;Trnka et al 2008;Kaltschmitt et al 2009;Petrič et al 2009;Sernek et al 2010;Ráhel' et al 2011;Karampinis et al 2012;Karl 2012;...…”

Section: Methodsunclassified

“…Populus deltoides (Ilstedt and Gullberg 1993;Boehme and Hora 1996;Liesebach et al 1999;Bungart et al 2000;Diamantidis and Koukios 2000;Woods 2008;Kaltschmitt et al 2009;Petrič et al 2009;Christersson 2010;Pande and Dhiman 2010;Sannigrahi et al 2010;Sernek et al 2010;Ráhel' et al 2011;Huda et al 2012;Karl 2012) Salix spp. (Wilén et al 1996;Labrecque et al 1997;Bungart et al 2000;Diamantidis and Koukios 2000;Lässig and Močalov 2000;Barsoum 2001;Deiller et al 2001;Rutz et al 2006;Wagenführ 2007;Wilkinson et al 2007;Bridgeman et al 2008;Woods 2008;Kaltschmitt et al 2009;Kord and Kord 2011;Buček et al 2012;Karampinis et al 2012;Karl 2012;EngineeringToolBox 2013) Fraxinus excelsior (Bray 1963;Kramer et al 1988;Neirynck et al 2000;Deiller et al 2001;Mohammed-Ziegler et al 2004;Ritter et al 2005;Matthews and Mackie 2006;Petritan et al 2007;Wagenführ 2007;Kaltschmitt et al 2009;…”

Section: Methodsunclassified

“…(Wilén et al 1996;Labrecque et al 1997;Bungart et al 2000;Diamantidis and Koukios 2000;Lässig and Močalov 2000;Barsoum 2001;Deiller et al 2001;Rutz et al 2006;Wagenführ 2007;Wilkinson et al 2007;Bridgeman et al 2008;Woods 2008;Kaltschmitt et al 2009;Kord and Kord 2011;Buček et al 2012;Karampinis et al 2012;Karl 2012;EngineeringToolBox 2013) Fraxinus excelsior (Bray 1963;Kramer et al 1988;Neirynck et al 2000;Deiller et al 2001;Mohammed-Ziegler et al 2004;Ritter et al 2005;Matthews and Mackie 2006;Petritan et al 2007;Wagenführ 2007;Kaltschmitt et al 2009;Vitasse et al 2009;Kiaei and Samariha 2011;Karl 2012) Fagus sylvatica (Bray 1963;Kramer et al 1988;Hasler et al 1994;Boehme and Hora 1996;Neirynck et al 2000;Helle and Schleser 2004;Ritter et al 2005;Petritan et al 2007;Wagenführ 2007;Kaltschmitt et al 2009;Vitasse et al 2009;Karl 2012 Ac...…”

Section: Methodsunclassified

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Evaluating the Competition of Lignocellulose Raw Materials for their Use in Particleboard Production, Thermal Energy Recovery, and Pulp- and Papermaking

Trischler¹,

Sandberg²,

Thörnqvist³

2014

BioResources

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There is increasing competition for raw materials between particleboard production, thermal energy recovery, and pulp-and papermaking. According to different scenarios, the consumption of lignocellulosic raw materials is increasing, which means that the competition is increasing. The primary production of lignocellulosic raw material in some regions may therefore reach the limit of sustainability; i.e., the lignocellulosic raw material must be used more efficiently to reduce the risk of a shortage. The physical and chemical properties of the lignocellulosic raw material of selected species have therefore been surveyed, and the raw material properties that are important for each of the three competitors have been defined. The aim of the study is to characterise the lignocellulosic raw materials according to the three competing users and to show whether they are high or low in competition. As methods, a relative ranking of the species regarding their raw material properties and regarding the requirements of the competitors as well as cluster analysis were chosen. The results show that the most favourable raw materials are from coniferous species, while monocotyledon species show an opposite trend.

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Untersuchungen zur Wasseraufnahme von Vollholz und Holzwerkstoffen

et al. 2012

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Der Wasseraufnahmekoeffizient ist ein wichtiger Parameter bei der Berechnung des Wassertransports in der Bauphysik. Für Holz und Holzwerkstoffe liegen jedoch erst wenige Werte vor. An verschiedenen Holzarten (Fichte, Buche, Eiche, Esche) und Holzwerkstoffen (Massivholzplatte, Sperrholz, OSB, Spanplatte, MDF, Faserdämmstoff) wurde deshalb die Wasseraufnahme nach DIN EN ISO 15148 bei teilweisem Eintauchen untersucht. Dabei war die Wasseraufnahme im Allgemeinen in Faserrichtung bzw. Plattenebene deutlich höher als senkrecht dazu. Bei den Span‐ und Faserwerkstoffen zeigte sich aufgrund eines variierenden Dichteprofils im Gegensatz zu den übrigen untersuchten Werkstoffen und zu Vollholz kein linearer Verlauf der Wasseraufnahme quer zur Plattenebene. Bei den Dämmstoffen beeinflusste die Beigabe von Zusatzstoffen (Latex, Paraffin, Stärke, PUR‐Harz, feuerhemmende Salze, Polyolefinfasern) die Wasseraufnahme stark. So ergab z. B. die Zugabe von Polyolefinfasern und feuerhemmenden Salzen einen um ca. zwei Zehnerpotenzen höheren Wasseraufnahmekoeffizienten gegenüber Dämmstoffen ohne Zusatzstoffe. Investigations on the water absorption of solid wood and wood‐based materials. The water absorption coefficient is an important parameter for water transport calculations in building physics. However, only few values exist for wood and wood‐based materials. Therefore, the water absorption of different wood species (spruce, beech, oak, ash) and wood‐based materials (solid wood panel, plywood, OSB, particle board, MDF, insulating fibreboard) was tested by partial immersion according to DIN EN ISO 15148. In general, water absorption was clearly higher parallel to the fibre and in plane direction than perpendicular to the fibre and perpendicular to the plane. Particle board and fibre board showed in contrast to the other investigated wood‐based materials and to solid wood a non‐linear trend of water absorption perpendicular to the plane due to their density profile. The water absorption of insulating fibreboards was highly affected by additives (latex, paraffin, starch, PUR, flame retardants, polyolefin fibres). For example, the addition of polyolefin fibres and flame retardants results in a two orders of magnitude higher water absorption coefficient compared to insulating boards without additives.

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Water Absorption and Contact Angle Measurement of Native European, North American and Tropical Wood Species to Predict Gluing Properties

Cited by 31 publications

References 2 publications

Wettability of Sanded and Aged Fast-growing Poplar Wood Surfaces: II. Dynamic Wetting Models

Wettability of Sanded and Aged Fast-growing Poplar Wood Surfaces: II. Dynamic Wetting Models

Evaluating the Competition of Lignocellulose Raw Materials for their Use in Particleboard Production, Thermal Energy Recovery, and Pulp- and Papermaking

Untersuchungen zur Wasseraufnahme von Vollholz und Holzwerkstoffen

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