Wettability of the surface of heat-treated juvenile teak wood assessed by drop shape analyzer
Keywords:
Chemical modification, contact angle, heartwood, hygroscopicity, sapwood, Tectona grandisAbstract
This study investigated the effect of the heat treatment on the wettability of the surface of juvenile teak (Tectona grandis) wood assessed by drop shape analyzer. Heartwood and sapwood samples were heat-treated at 180 and 200oC. Contact angle measurements were done every 5 s for 120 s using a KRÜSS DSA100. Heartwood had lower wettability than sapwood. Heat-treatment decreased the surface wettability of both heartwood and sapwood, especially in the wood treated at 200oC. Heartwood had lower wettability than sapwood, even after heat treatment.
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References
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Bernabei, M.; Salvatici, M.C. 2016. In situ ESEM observations of spruce wood (Picea abies Karst.) during heat treatment. Wood Sci. Technol 50: 715-726.
Bhuiyan, T.; Hirai, N. 2000. Changes of crystallinity in wood cellulose by heat treatment under dried and moist conditions. J Wood Sci 46: 431-436.
Cademartori, P.H.G.; dos Santos, P.G.; Serrano, L.; Labidi, J.; Gatto, D.A. 2013. Effect of thermal treatment on physicochemical properties of Gympie messmate wood. Industrial Crops and Products 45:360-366.
Daltin, D. 2011. Tensoativos: química, propriedades e aplicações. Blucher, São Paulo.
Esteves, B.; Videira, R.; Pereira, H. 2011. Chemistry and ecotoxicity of het-treated pine wood extractives. Wood Science and Technology 45(4): 661-676.
Forest Products Laboratory. 2010. Wood handbook: wood as an engineering material. General Technical Report FPL-GTR-190. Department of Agriculture, Forest Service, Forest Products Laboratory, Madison, WI: U.S.
Garcia, R.A.; Lopes, J.O.; Nascimento, A.M.; Latorraca, J.V.F. 2014. Color stability of weathered heat-treated teak wood. Maderas. Ciencia y tecnología 16(4): 453-462, 2014.
Gardner, D.J.; Wolcott, M.P.; Wilson, L.; Huang. Y; Carpenter, M. 1995. Our understanding of wood surface chemistry in 1995. Proc. No. 7296. Wood Adhesives 1995. Forest Products Society, Madison, WI, USA.
Giebeler, E. 1983. Dimensional stabilization of wood by moisture-heat-pressure treatment. Holz als Roh-und Werkstoff 41(1): 87-94.
Kocaefe, D.; Poncsák, S.; Doré, G.; Younsi, R. 2008. Effect of heat treatment on the wettability of white ash and soft maple by water. Holz als Roh-und Werkstoff 66(5): 355-361.
Lekounougou, S.; Kocaefe, D. 2013. Bioresistance of thermally modified Populus tremuloides (North American Aspen) wood against four decay fungi. International Wood Products Journal 4(1): 46-51.
Lopes, J.O.; Garcia, R.A.; Nascimento, A.M.; Latorraca, J.V.F. 2014. Color uniformization of the Young teak wood by heat treatment (in portuguese). Revista Árvore 38(3): 561-568.
Niamké, F.B.; Amusant, N.; Charpentier, J.-P.; Chaix, G.; Baissac, Y.; Boutahar, N.; Pétrissans, M.; Gérardin, P.; El Bakali, I.; Serraj, M. 2003. Wettability of heat-treated wood. Holzforschung 57(3): 301-307.
Pizzi, A.; Stephanou, A. 1993. On the chemistry, behavior, and cure acceleration of phenol- formaldehyde resins under very alkaline conditions. Journal of Applied Polymer Science 49(12): 2157-2170.
Popescu, C.M.; Popescu, M.C. 2013. A near infrared spectroscopic study of the structural modifications of lime (Tilia cordata Mill.) wood during hydro-thermal treatment. Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy 115: 227- 233.
Sernek, M.; Kamke, F.A.; Glasser, W.G. 2004. Comparative analysis of inactivated wood surface. Holzforchung 58: 22-31.
Tshabalala, M.A. 2005. Surface characterization. In Rowell, R.M. (Ed.). Handbook of wood chemistry and wood composites. CRC Press, Boca Raton, Florida.
Wang, W.; Zhu, Y.; Cao, J.Z.; Sun, W.J. 2015. Correlation between dynamic wetting behavior and chemical components of thermally modified wood. Applied Surface Science 324: 332-338.
Yamamoto, K.; Simatupang, M.H.; Hashim, R. 1998. Caoutchouc in teak wood (Tectona grandis): Formation, location, influence on sunlight irradiation, hydrophobicity and decay resistance. Holz als Roh- und Werkstoff 56(3): 201-209.
Yuan, Y.; Lee, T.R. 2013. Contact angle and wetting properties. In: Bracco, G.; Holst, B. (Eds.) Surface Science Techniques. Springer Series in Surface Sciences 51: 3-34.
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Published
2018-04-01
How to Cite
de Oliveira Lopes, J., Aparecida Garcia, R., & Miguel do Nascimento, A. (2018). Wettability of the surface of heat-treated juvenile teak wood assessed by drop shape analyzer. Maderas-Cienc Tecnol, 20(2), 249–256. Retrieved from https://revistas.ubiobio.cl/index.php/MCT/article/view/3050
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