The Effects of Different Coatings on Some Surface Properties of Beech Wood

Document Type : Research Paper

Authors

Abstract

Abstract:
Any effects of wood coating with different compounds as nano-zinc, nano-chitosan, chitosan, silicon oil and flaxseed oil on surface properties as; wood color change, surface roughness and wettability were studied in the current research work. For this purpose, sample boards of beech wood were cut into sizes of 2×10×20cm. The specimens were coated with the noticed coatings and tested for colorimetric, surface roughness and water contact angle before and after coating procedure. Results revealed that wood color is changed to quite darker due to coating with varying amounts. Wood surface became resistance to water absorption due to increased wettability. Chitosan coated samples showed less color changes in comparison with silicon oil coated ones which were quite darker.
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Keywords: contact angle, discoloration, surface roughness, wettability, nano Zinc oxide, nano chitosan, chitosan, silicon oil

Keywords


[1]. Stamm, A.J., and Millett, A. (1940). The internal surface of cellulosic materials. 7th Colloid Symposium, Ann Arbor, Michigan, June 6-8: 43-45.
[2]. Sjöstrom,E. (1992). Wood chemistry fundamentals and applications. Academic Press, San Diego: 293. p.
[3]. Hon, D.N.S. (2001). Wood and cellulosic chemistry, CRC Press, New York: pp. 273-358.
[4]. Evans, P.D., Chowdhury, M.J., Mathews, B., Schamlzl, K., Ayer, S., Kiguchi, M., and Kataoka, Y. (2005). Weathering and surface protection of wood. In: Kutz, M. (Ed.). Handbook of Environmental Degradation of Materials. William Andrew Publishing, Norwich: pp. 277-297.
[5]. Feist, W.C., and Wisconsin, M. (1983). Weathering and protection of wood. In: Proceedings of 79th Annual Meeting of the American Wood-Preservers’ Association, April 17-20, Kansas City, Stevensville, MD: American Wood Preservers’ Association, Vol. 79: pp. 192-205.
[6]. Hayoz, P., Peter, W., and Roges, D. (2003). A new innovative stabilization method for the protection of natural wood. Progress in Organic Coatings, 48: 297–309.
[7]. Tracton, A.A. (2006). Coatings Technology, Third Edition, Taylor and Francis Group, New York: 18-45.
[8]. Meijer, M.D. (1991). Interactions between wood and coating with low organic solvent content. PhD Thesis, Wageningen University, Netherlands: 183p.
[9]. Clausen, C.A. (2007). Nanotechnology: Implications for the wood preservation industry. The International Research Group on Wood Protection, Stockholm, Sweden, IRG Document No. IRG/WP/07-30415: 15. p.
[10]. Gholamiyan, H., Tarmian, A., Doost Hosseini, K., and Azadfallah, M. (2011). The effect of clear paints, nanozycofil and nanozycosil on water absorption and contact angle of poplar wood. Journal of Iranian Society of Wood and Paper Sciences and Industries, 2(1): 17-26.
[11]. Clausen, C.A., Green, F., and Kartal, S.N. (2010). Weatherability and leach resistance of wood impregnated with nano-zinc oxide. Journal of Nanoscale Research Letter, 5: 1464–1467.
[12]. Temiz, A., Terziev, N., Eikenes, M., and Hafren, J. (2007). Effect of accelerated weathering on surface chemistry of modified wood. Journal of Applied Surface Science, 253: 5355–5362.
[13]. De Moura, M.R., Aouada, F.A., and Mattoso, L.H.C. (2008). Preparation of chitosan Nano particles using methacrylic acid. Journal of Colloid and Interface Science, 321: 477–483.
[14]. Standard practice for calculation of color tolerances and color differences from instrumentally measured color coordinates, Annual Book of ASTM Standard, 02.04, D 2224-02, 2002.
[15]. Anonymous. 2014. List of refractive indices.  Online at: http://en.wikipedia.org/wiki/List_of_refractive_indices.
[16]. O’Lenick, A.J. (1999). Basic silicone chemistry- A review. Silicon Spectator, SiltechLLC, Dacula, Ga. 30019: 23. p.