Potential roles of polyacrylate- silicate sodium compound on weathering performance of a wood polymer composite

Document Type : Research Paper

Authors

1 Assoc., Prof., Tarbiat Modares University, Faculty of Natural Resources, Wood and Paper Science and Technology Department, I.R. Iran

2 MSc, Wood and Paper Science and Technology Department, Natural Resources Faculty, Tarbiat Modares University, Noor, Mazandaran, I.R. Iran

Abstract

The aim of the current research work was to prepare a kind of the wood-polymer composite from fir wood with a combination of sodium silicate and polyacrylate compound and also to study their effects on prohibition in leaching of the sodium silicate and also increase in resistance of wood against the weathering. For this purpose, the test samples were initially prepared according to the standard methods. Afterwards, the specimens were impregnated with the sodium silicate and the polyacrylate under a vacuum of 0.5 bar for 30 minutes and then a pressure of 6 bar for 3 hours in a cylinder. The samples were then exposed to the natural weathering for 80 days period to study their weathering resistances, changes in color coordinates, roughness and also wettability of the treated wood as well as leaching of the impregnation compounds. The results showed that the presence of the polyacrylate had a higher potential performance to reduce leaching of the sodium silicate from wood. The polyacrylate also reduced the color changes and surface roughness of the samples due to the degradation during the weathering period. It was also revealed that the polyacrylate increased the hydrophobicity of the samples and reduced the wettability of the surface of the samples against the water droplets during the natural weathering. Among those treatments, the treatment S60- Pa50 - (1: 2) indicated the best performances compared to other treatments against the natural weathering and prohibition in leaching of the sodium silicate from the treated wood due to the higher amount of polyacrylate.

Keywords

References

[1]. Ormondroyd, G., Spear, M., and Curling, S. (2015). Modified wood: review of efficacy and service life testing. Proceedings of the Institution of Civil Engineers-Construction Materials, 168(4), 187-203.
[2]. Wang, W., Zhu, Y., and Cao, J. (2013). Evaluation of copper leaching in thermally modified southern yellow pine wood impregnated with ACQ-D. BioResources, 8(3), 4687-4701.
[3]. Jirouš-Rajković, V. L. A. T. K. A. (2004). Surface pH and colour change of a wood exposed to weathering. Wood Research, 49, 9-16.‌
[4]. Feist, W. C., and Hon, D. N. S. (1984). Chemistry of weathering and protection. The chemistry of solid wood, 207, 401-451.
[5]. Hon, D. N. S., and Feist, W. C. (1992). Hydroperoxidation in photoirradiated wood surfaces. Wood and Fiber Science, 24, 448-448.
[6]. Sudiyani, Y., Tsujiyama, S. I., Imamura, Y., Takahashi, M., Minato, K., and Kajita, H. (1999). Chemical characteristics of surfaces of hardwood and softwood deteriorated by weathering. Journal of Wood Science, 45(4), 348-353.‌
[7]. Deka, M., Humar, M., Rep, G., Kričej, B., Šentjurc, M., and Petrič, M. (2008). Effects of UV light irradiation on colour stability of thermally modified, copper ethanolamine treated and non-modified wood: EPR and DRIFT spectroscopic studies. Wood Science and Technology, 42(1), 5-20.‌
[8]. Zahri, S., Belloncle, C., Charrier, F., Pardon, P., Quideau, S., and Charrier, B. (2007). UV light impact on ellagitannins and wood surface colour of European oak (Quercus petraea and Quercus robur). Applied Surface Science, 253(11), 4985-4989.‌
[9]. Agoudjil, B., Benchabane, A., Boudenne, A., Ibos, L., and Fois, M. (2011). Renewable materials to reduce building heat loss: Characterization of date palm wood. Energy and buildings, 43(2-3), 491-497.‌
[10]. Sandberg, D., Kutnar, A., and Mantanis, G. (2017). Wood modification technologies-a review. Forest-Biogeosciences and Forestry, 10(6), 895.
[11]. Li, Y., Liu, Z., Dong, X., Fu, Y., and Liu, Y. (2013). Comparison of decay resistance of wood and wood-polymer composite prepared by in-situ polymerization of monomers. International Biodeterioration and Biodegradation, 84, 401-406.‌
[12]. Li, P., Zhang, Y., Zuo, Y., Lu, J., Yuan, G., and Wu, Y. (2020). Preparation and characterization of sodium silicate impregnated Chinese fir wood with high strength, water resistance, flame retardant and smoke suppression. Journal of Materials Research and Technology, 9(1), 1043-1053.
[13]. Garskaite, E., Karlsson, O., Stankeviciute, Z., Kareiva, A., Jones, D., and Sandberg, D. (2019). Surface hardness and flammability of Na2SiO3 and nano-TiO2 reinforced wood composites. RSC Advances, 9(48), 27973-27986.‌
[14]. Slimak, K.M., and Slimak, R.A., (2000). Enhancing the strength, moisture resistance a fire-resistance of wood, timber, lumber, similar plant derived construction and building materials and other cellulosic materials. United States Patent. 6, 146-766.
[15]. Li, P., Zhang, Y., Zuo, Y., Lu, J., Yuan, G., and Wu, Y. (2019). Preparation and characterization of sodium silicate impregnated Chinese fir wood with high strength, water resistance, flame retardant and smoke suppression. Journal of Materials Research and Technology.
[16]. Chen, X. (2009). Students Who Study Science, Technology, Engineering, and Mathematics (STEM) in Postsecondary Education. Stats in Brief. NCES 2009-161. National Center for Education Statistics.‌
[17]. Peng, Y., Han, Y., Gardner, D.J. )2010(. Sodium silicate coated wood. In: Proceedings of the International Convention of Society of Wood Science and Technology and United Nations Economic Commission for Europe. Timber Committee. October 11-14, 2010, Geneva, Switzerland.
[18]. Neyses, B., Rautkari, L., Yamamoto, A., and Sandberg, D. (2017). Pre-treatment with sodium silicate, sodium hydroxide, ionic liquids or methacrylate resin to reduce the set-recovery and increase the hardness of surface-densified Scots pine. Forest-Biogeosciences and Forestry, 10(5), 857.‌
[20]. Xu, E., Zhang, Y., and Lin, L. (2020). Improvement of mechanical, hydrophobicity and thermal properties of Chinese fir wood by impregnation of nano silica sol. Polymers, 12(8), 1632.
[21]. Bulian F., Graystone, J. A. (2009). Wood coatings - theory and practice (1st ed.), Amsterdam, The Netherlands: Elsevier, 9(9), 425.
[22]. Cocca, M., D’arienzo, L., D’orazio, L., Gentile, G., and Martuscelli, E. (2004). Polyacrylates for conservation: chemico-physical properties and durability of different commercial products. Polymer Testing, 23(3), 333-342.
[23]. Tiralová, Z., and Reinprecht, L. (2004). Fungal decay of acrylate treated wood. International Research Group on Wood Preservation, Doc. No. IRG/WP, 04-30357.
[24]. Miklečić, J., Blagojević, S. L., Petrič, M., and Jirouš-Rajković, V. (2015). Influence of TiO2 and ZnO nanoparticles on properties of waterborne polyacrylate coating exposed to outdoor conditions. Progress in Organic Coatings, 89, 67-74.
[25]. Bao, Y., Ma, J., Zhang, X., and Shi, C. (2015). Recent advances in the modification of polyacrylate latexes. Journal of Materials Science, 50(21), 6839-6863.
[26]. Nowrouzi, Z., Mohebby, B., Ebrahimi, M., & Petrič, M. (2021). Weathering performance of thermally modified wood coated with polyacrylate containing olive leaf extract as a bio-based additive. European Journal of Wood and Wood Products, 79(6), 1551-1562.
‌ [27]. Teacă, C. A., Roşu, D., Bodîrlău, R., and Roşu, L. (2013). Structural changes in wood under artificial UV light irradiation determined by FTIR spectroscopy and color measurements–A brief review. BioResources, 8(1), 1478-1507.‌
[28]. Reinprecht, L., and Vidholdová, Z. (2019). Rot resistance of tropical wood species affected by water leaching. BioResources, 14(4), 8664-8677
[29]. Altun, S., Ozcifci, A., Şenel, A., Baysal, E., and Toker, H. (2010). Effects of silica gel on leaching resistance and thermal properties of impregnated wood. Wood Research, 55(4), 101-112.‌
[30]. Pfeffer, A., Mai, C., and Militz, H. (2012). Weathering characteristics of wood treated with water glass, siloxane or DMDHEU. European Journal of Wood and Wood Products, 70(1), 165-176.
[31]. Pandey, K. K., and Srinivas, K. (2015). Performance of polyurethane coatings on acetylated and benzoylated rubberwood. European Journal of Wood and Wood Products, 73(1), 111-120.
[32]. Yildiz, S., Yildiz, U. C., and Tomak, E. D. (2011). The effects of natural weathering on the properties of heat-treated alder wood. BioResources, 6(3), 2504-2521.
[33]. Togay, A., Kilic, Y. and Colakoglu, G. (2009). Effect of impregnation with Timber care Aque to surface roughness of some varnishes. Journal of Appled Science, 9(9), 1719-1725.
Forest and Wood Products
Volume 75, Issue 2
August 2022
Pages 185-199

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