Global Journal of Science Frontier Research, G: Bio-Tech & Genetics, Volume 22 Issue 2

5. The MOE of teak plywood, the control was 12,734.54 MPa, it was decreased in different level of temperature at 180, 200, 220, and 240°C significant different and length of time on 4, 8, and 12 min was no significant different. The different level of temperature effected MOE of teak plywood. 6. The shearing strength value of teak plywood in control 13.55 MPa, thermal treatment in different level of temperature at 180, 200, 220, and 240 °C and length of time on 4, 8, and 12 min was decreased. A control and at 200 °C, 220 and 240 °C were significant different, but thermal treatment at 180, 200, and 240°C on 4, 8, and 12 min was no significant different. The shearing strength was a little decreased. 7. The hardness a control average was 22.09 MPa, thermal treatment at 180, 200, 220, and 240°C and length of time on 4, 8, and 12 min was fluctuated. And it was no significant different. A cknowledgement The authors are grateful for the support of the Second Strengthening Higher Education Project (SSHEP), Department of Height Education, Grant No 0500-LAO. The tuition fee was supported by Kasetsart University. Thanks are given to the Department Forest Economics and Wood Technology, Faculty of Forest Science, National University of Laos that allowed to use experimental equipment and facility. Also, thanks to the supervision from the Department of Forest Products KU. Finally, we are great full for Bualapha Agroforestry Co,. Ltd suported facilitating Fast test equipment. R eferences R éférences R eferencias 1. Aytin, A., Korkut, S., Ünsal, Ö., & Çakıcıer, N. (2015). The effects of heat treatment with the Thermo Wood® method on the equilibrium moisture content and dimensional stability of wild cherry wood. BioResources, 10 (2), 2083-2093. 2. Bekhta, P., K. Sedliačik., and, R. S., & Novák, I. (2016). Effect of Different Hardeners For Urea- Formaldehyde Resin on Properties of Birch Plywood. Acta Facultatis Xylologiae Zvolen, 2 , 65- 72. doi:10.17423/afx.2016.58.2.07 3. Bouaphavong, D., Jarusombuti, S., & Veenin, T. (2016). Teak log grading for teak plantation in Lao PDR. Thai Journal of Forestry, 35 (3), 160-169. 4. Budiadi., Widiyatno., & Ishii, H. (2017). Response of a Clonal teak plantation to thinning and pruning in Java, Indonesia. Journal of Tropical Forest Science , 44-53. 5. Callum, A. H. (2011). Wood modification: An update. BioResources, 6 (2), 918-919. 6. Cuccui, I., Negro, F., Zanuttini, R., Espinoza, M., & Allegretti, O. (2017). Thermo-Vacuum Modification of Teak Wood from Fast-Growth Plantation. Bio Resources, 12 (1). doi:10.15376/biores.12.1.1903- 1915 7. Del Menezzi, C., Nakamura, A. P., Queiroz, F., & Couto, M. (2017). Physical and mechanical properties of teakwood LVL bonded with expanded polystyrene. Pro Ligno, 13 (4), 194-198. 8. Djati, I. D., Tauchi, T., Kubo, M., & Terauchi, F. (2015). Sapwood Of Young Teak From Thinning As Potential Material For Making Products. Bulletin of Japanese Society for the Science of Design, 61 (5), 5_77-75_86. doi:10.11247/jssdj.61.5_77 9. Fondation Ensemble. (2014). Biodiversity Conservation in Luang Prabang Teak Program (LPTP). Retrieved from https://www.fondation ensemble.org , dated access: 1 August 2019. 10. Ghorbani, M., Liebner, F., van Herwijnen, H. W., Pfungen, L., Krahofer, M., Budjav, E., et al. (2016). Lignin phenol formaldehyde resoles: the impact of lignin type on adhesive properties. BioResources, 11 (3), 6727-6741. 11. GPérez, D., & Kanninen, M. (2005). Effec of thinning on stem form and wood characteristics of teak (Tectona grandis) in a humid tropical site in Costa Rica. Silva Fennica, 39 (2), 217-225. 12. International Thermowood Association. (2003). ThermoWood Handbook. In. Unioninkatu 14, FIN- 00130 Helsinki, FINLAND. Physical and Mechanical Properties of Teak (Tectona Grandis L.Fil.) Thermo-Plywood from Plantations in Lao P.D.R 13. Islam, M. N., Rahman, K.-S., & Alam, M. R. (2012). Comparative study on physical and mechanical properties of plywood produced from eucalyptus (Eucalyptus camaldulensis Dehn.) and simul (Bombax ceiba L.) veneers. Research Journal of Recent Sciences ISSN, 2277 , 2502. 14. Izekor, D., Fuwape, J., & Oluyege, A. (2010). Effects of density on variations in the mechanical properties of plantation grown Tectona grandis wood. Archives of Applied Science Research, 2 (6), 113-120. 15. Kantay, R., & KARTAL, S. (2007). Heat treatment application and properties of heat treated wood. Wood Journal , 80-89. 16. Lengowski, E. C., Bonfatti Júnior, E. A., Nisgoski, S., Bolzon de Muñiz, G. I., & Klock, U. (2021). Properties of thermally modified teakwood. Maderas. Ciencia y tecnología, 23 . 17. May, K., .L. (2003). Study on Utilization of Plantation Teak Pre-project CFC/ITTO 73 FT PPD 68/03 Rev.2 (I). In Handbook on Properties of Plantation Teak in Myanmar . Ministry Of Forestry Forest Department Myanmar, Common Fund For Commodity (CFC) And International Tropical Timber Orginization (ITTO): CFC/ITTO 73 FT PPD 68/03 Rev.2 (I). 18. Miranda, I., Sousa, V., & Pereira, H. (2011). Wood properties of teak (Tectona grandis) from a mature unmanaged stand in East Timor. Journal of Wood Science, 57 (3), 171-178. doi:10.1007/s10086-010- 1164-8 1 Year 2022 83 © 2022 Global Journals Global Journal of Science Frontier Research Volume XXII Issue ersion I VII ( G )

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