This research was conducted to detect changes in the mechanical properties of samama wood (Anthocephalus macrophyllus) after impregnation with boron, castor bean oil, and heat treatment. Samama wood has low durability so samples were impregnated with boric acid followed by impregnation with castor oil in order to achieve some fixation of the boric acid. After impregnation, heat treatments were applied for four hours at 80°C and 160°C. Results showed that the modulus of elasticity (MOE), modulus of rupture (MOR) and hardness of samama wood generally increased after the treatments. Compared with the control, the maximum differences in MOE and MOR were 19.9% and 26.7%, respectively. Castor oil treatment also increased the density and hydrophobicity of the samama wood.
AhmedSA, MorénT, Sehlstedt-PerssonM, BlomÅ. 2017. Effect of oil impregnation on water repellency, dimensional stability and mold susceptibility of thermally modified European aspen and downy birch wood. J Wood Sci. 63(1):74–82.
2.
AminY, DwiantoW.2006. Pengaruh Suhu dan Tekanan Uap Air Terhadap Fiksasi Kayu Kompresi engan Menggunakan close system compression. Jurnal Ilmu dan Teknologi Kayu Tropis. 4(2):55–60.
3.
BaysalE, YalinkilicMK.2005. A new boron impregnation technique of wood by vapor boron of boric acid to reduce leaching boron from wood. Wood Sci Technol. 39(3):187–198.
4.
BSI. 1957. Methods of testing small clear specimens of timber. British Standard Institution. BSI. 373:31.
5.
CahyonoTD, DarmawanW, IswantoAH, PriadiT.2020. Flexural properties of heat-treatment Samama (Anthocephalus macrophyllus) wood impregnated by boron, methyl methacrylate. Korean Wood Sci Technol. 48(1):76–85.
6.
CahyonoTD, DarmawanW, YantiH, IswantoAH.2020. Changes in chemical components with NIR spectroscopy and durability of samama wood treated with boron, methyl methacrylate and heat treatment. IOP Conf Ser: Earth Environ Sci. 454:012094.
7.
CarrJM, DugganPJ, HumphreyDG, TyndallEM.2005. Enhanced anti-fungal activity of the organo-soluble borate ester, tetra-n-butylammonium bis (ortho-hydroxymethylphenolato) borate. Aust J Chem. 58(1):21–25.
8.
CaupinH-J.2018. Products from castor oil: past, present, and future. In: GunstoneFD, FadleyFB, editors. Lipid technologies and applications. Abingdon: Routledge. p. 787–795.
9.
DemirelGK, TemizA, JebraneM, TerzievN, GezerED.2018. Micro-distribution, water absorption, and dimensional stability of wood treated with epoxidized plant oils. BioResources. 13(3):5124–5138.
10.
GaussC, KadivarM, SavastanoH.Jr2019. Effect of disodium octaborate tetrahydrate on the mechanical properties of Dendrocalamus asper bamboo treated by vacuum/pressure method. J Wood Sci. 65(1):1–11.
11.
HyvönenA, NeloM, PiltonenP, HormiO, NiinimäkiJ.2007. Using iron catalyst to enhance the drying properties of crude tall oil-based wood preservative. Holz als Roh-und Werkstoff. 65(2):105–111.
12.
KartalSN, HwangW-J, ImamuraY.2008. Combined effect of boron compounds and heat treatments on wood properties: chemical and strength properties of wood. J Mater Process Technol. 198(1–3):234–240.
13.
KartalSN, HwangW-J, YamamotoA, TanakaM, MatsumuraK, ImamuraY.2007. Wood modification with a commercial silicon emulsion: effects on boron release and decay and termite resistance. Int Biodeterior Biodegrad. 60(3):189–196.
14.
KocaefeD, PoncsakS, DoréG, YounsiR.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.
15.
KocaefeD, PoncsakS, TangJ, BouazaraM.2010. Effect of heat treatment on the mechanical properties of North American jack pine: thermogravimetric study. J Mater Sci. 45(3):681–687.
16.
LinC-F, KarlssonO, MantanisGI, SandbergD.2020. Fire performance and leach resistance of pine wood impregnated with guanyl-urea phosphate/boric acid and a melamine-formaldehyde resin. Eur J WoodWood Prod. 78(1):107–111.
17.
ListyantoT, PratamaAA, AndoK, HattoriN.2020. Improving fire resistance of mahogany (Swietenia macrophylla) wood impregnated with mixture of borax and boric acid. Wood Res J. 11(2):48–52.
18.
MalikJ, OzarskaB.2019. Mechanical characteristics of impregnated white Jabon wood (Anthocephalus cadamba) using merbau extractives and selected polymerised merbau extractives. Maderas. Ciencia y Tecnología. 21(4):573–586.
19.
NguyenTTH, LiS, LiJ.2020. Effects of rosin-aluminum sulfate treatment on the leachability, Color stability, and decay resistance of wood treated with a boron-based preservative. BioResources. 15(1):172–186.
20.
OrsY, AtarM, ÇolakoğluMH.2007. Impact of impregnation with boron compounds on the surface hardness of varnished wood. J Appl Polym Sci. 105(4):2327–2331.
21.
PerçinO, SofuogluSD, UzunO.2015. Effects of boron impregnation and heat treatment on some mechanical properties of oak (Quercus petraea Liebl) wood. BioResources. 10(3):3963–3978.
22.
PriadiT, OrfianG, CahyonoTD, IswantoAH.2020. Dimensional stability, Color change, and durability of boron-MMA treated Red Jabon (Antochephalus macrophyllus) ood. J Korean Wood Sci Technol. 48(3):315–325.
23.
TemizA, AlfredsenG, EikenesM, TerzıevN.2008. Decay resistance of wood treated with boric acid and tall oil derivates. Bioresour Technol. 99(7):2102–2106.
24.
ThévenonM-F, PizziA, HalukJ-P.1998. Albumin borate: a new non-toxic, wide-spectrum, long-term wood preservative.
25.
TomakED, HughesM, YildizUC, ViitanenH.2011. The combined effects of boron and oil heat treatment on beech and Scots pine wood properties. Part 1: boron leaching, thermogravimetric analysis, and chemical composition. J Mater Sci. 46(3):598–607.
26.
Verly LopesDJ, BarnesHM, dos Santos BobadilhaG.2020. Influence of heat treatment and tannin impregnation on boron depletion and wood durability. Forests. 11(2):201.
27.
WaleM, AssegieH.2015. Efficacy of castor bean oil (Ricinus communis L.) against maize weevils (Sitophilus zeamais Mots.) in northwestern Ethiopia. J Stored Prod Res. 63:38–41.
28.
WangJ, CooperP.2005. Effect of oil type, temperature and time on moisture properties of hot oil-treated wood. Holz als Roh-und Werkstoff. 63(6):417–422.
29.
YuniantiAD.2012. Nanostructure characteristics of cell wall and their relationship to wood quality (Case study in 7-yearsold cloned teak). Dissertation, IPB University, Bogor(ID).
