Caoutchouc in teak wood (Tectona grandis L. f.): formation, location, influence on sunlight irradiation, hydrophobicity and decay resistance

1998 ◽  
Vol 56 (3) ◽  
pp. 201-209 ◽  
Author(s):  
K. Yamamoto ◽  
M. H. Simatupang ◽  
R. Hashim
Keyword(s):  
Tectona Grandis ◽  
Decay Resistance ◽  
Sunlight Irradiation ◽  
Teak Wood

scholarly journals SURFACE CHEMICAL AND COLOR CHARACTERIZATION OF JUVENILE TECTONA GRANDIS WOOD SUBJECTED TO STEAM-DRYING TREATMENTS

2016 ◽  
Vol 23 (01) ◽  
pp. 1550091 ◽  
Author(s):  
ALEXANDER BERROCAL ◽  
RÓGER MOYA ◽  
MARÍA RODRIGUEZ-SOLIS ◽  
RICARDO STARBIRD ◽  
FREDDY MUÑOZ
Keyword(s):  
Color Change ◽  
Tectona Grandis ◽  
Surface Chemical ◽  
Surface Color ◽  
Teak Wood ◽  
Text Color ◽  
The Fourier Transform ◽  
Moisture Conditions ◽  
Steam Drying

The color of Tectona grandis wood is an attribute that favors its commercialization, however, wood color from fast-growth plantation trees is clear and lacks uniformity. The aim of this work is to characterize steamed teak wood by means of the Fourier transform infrared spectroscopy (FTIR) and [Formula: see text] color systems. Two moisture conditions (green and 50%) and two grain patterns (flat and quarter) of boards were analyzed through the application of different steaming times (0, 3, 6, 9, 12, 15 and 18[Formula: see text]h). The FTIR results showed that the bands at 1158, 1231, 1373 and 1419[Formula: see text]cm[Formula: see text] did not show any change with steaming, whereas the bands at 1053, 1108, 1453, 1506, 1536, 1558, 1595, 1652, 1683, 1700 and 1733[Formula: see text]cm[Formula: see text] presented a decrease in the intensity with the steaming time. The band at 1318[Formula: see text]cm[Formula: see text] was the only one that increased. Lightness ([Formula: see text]) was the most affected parameter, followed by yellowness ([Formula: see text]), while redness ([Formula: see text]) showed the smallest change. Surface color change ([Formula: see text]) presented the lowest value between 3[Formula: see text]h and 6[Formula: see text]h of steam-drying in the boards with flat grain, whereas for boards with quarter grain, the smallest [Formula: see text] value was obtained after 18[Formula: see text]h of steaming.

scholarly journals Relationship of the cellular structure of teak wood (Tectona grandis L. f.) with different ages and growth sites

2017 ◽  
Vol 24 (1) ◽  
pp. 101-114
Author(s):  
Rául Rodríguez-Anda ◽  
◽  
Francisco J. Fuentes-Talavera ◽  
José A. Silva-Guzmán ◽  
Hilda Palacios-Juárez ◽  
...  
Keyword(s):  
Cellular Structure ◽  
Tectona Grandis ◽  
Different Ages ◽  
Teak Wood ◽  
Relationship Of

GC-MS Analysis on Heartwood Extractive Chemical Components of Different Provenances Teak（Tectona Grandis L.f.）

2011 ◽  
Vol 236-238 ◽  
pp. 1049-1053 ◽  
Author(s):  
Cheng Ping Xie ◽  
Kai Fu Li ◽  
Jin Ling Lin ◽  
Jian Bian Li
Keyword(s):  
Phthalic Acid ◽  
Tectona Grandis ◽  
Decay Resistance ◽  
Chemical Components ◽  
Natural Durability ◽  
End User ◽  
Analytical Instruments ◽  
Ms Analysis ◽  
Tectona Grandis L.F

Teak (Tectona grandisL.f) is decay resistance and natural durability. These advantages are relationship with inclusion of teak. For breeding, planting, and the wood used to its best advantage by the end-user, further information concerning the heartwood extractive chemical of different provenances teak is necessary, However, because of limitation of analytical instruments, the extractive chemical components of teak centre on decay resistance relationship with napthoquinone, tectoquinone, and so on, nobody systematacially analyzed heartwood extractive chemical components of different teak. We analyzed and contrasted extractive chemical components of three provenances teak heartwood(Indian, Thailand and Nigeria), and found 109 peak and 74 compounds was identified, the same compounds of 3 provenances were 27. The main compounds were Mequinol, 1,2-benzenediol, 1(3H)-Isobenzofuranone, Vanillin, 1,4-Naphthalenedione, Naphthalene, 1,2,3,4,4a,5,6,8a- octahydro-7-methyl-4-methylene-1- (1- methylethyl), Cyclohexane, 1-ethenyl-1-methyl- 2-(1-methylethenyl)-4- (1- methylethylidene)-, 4,6-Dimethoxysalicylaldehyde, 2-Propenal, 3-(1,3-benzodioxol-5-yl)-, 4-((1E)-3-Hydroxy -1-propenyl) -2-methoxyphenol, 1H-Imidazole, 1-ethyl-, 2-Methylisoborneol, Phthalic acid, phenyl 2-pentyl ester, 1,4-Naphthalenedione, 2-hydroxy-3-(3-methyl-2-butenyl)-, [1,1'-Biphenyl]-2-ol, 5-(1,1-dimethylethyl)-, 9,10- Anthracenedione, 2-methyl-, 1-Hydroxy-4-methylanthraquinone, Indane-1,3-dione, 2-(3-hydroxyphenyl)- 2H-Benzopyran - 2-one, 4-methyl-3-phenyl-, 9,10-Anthracenedione, 1,8-dihydroxy-2-methyl-, 2-(Hydroxymethyl) anthraquinone, 4H-1-Benzopyran-4-one, 3-hydroxy-2-phenyl-, Benzofuran-3-one, 2-[3-hydroxy-4-methoxy benzylidene] -6-hydroxy-, Squalene, .gamma.-Sitosterol, 9,19-Cyclolanost-24-en-3-ol, (3.beta.)-, Cholest-8(14)-en-7-one, (5.alpha.)-.

scholarly journals PRODUCTION OF BIOETHANOL FROM TECTONA GRANDIS, PTEROCARPUS MARSUPIUM AND PAPER

2020 ◽  
Vol 21 (supplement 1) ◽  
Author(s):  
S. Poorni ◽  
M. Priya ◽  
M. Yasasve ◽  
M. Yasasve ◽  
M. Yasasve
Keyword(s):  
Alternative Fuels ◽  
Fossil Fuels ◽  
Tectona Grandis ◽  
Primary Energy ◽  
Renewable Energy Resources ◽  
Pterocarpus Marsupium ◽  
Diverse Range ◽  
Teak Wood ◽  
Bioethanol Yield ◽  
Simultaneous Saccharification

Currently one of the world’s primary energy sources, fossil fuels are also causing an increase in environmental pollution. Besides pollution, these fossil fuels are also diminishing in quantities which increase the need for alternative fuels. This rising need lead to the development of alternative renewable energy resources. A diverse range of sources are available that can be efficiently utilized to produce biofuels, in this research we utilize Tectona grandis (teak wood), Pterocarpus marsupium (malabar kino)and paper as biomass sources to produce bioethanol using Saccharomycescerevisiae fermentation. These biomasses were said to be lignocellulosic substrates rich in cellulose, hemicellulose and lignin. Simultaneous saccharification and fermentation (SSF) are used to in the conversion of substrate to ethanol in which the polysaccharides in the biomass are converted into simple sugars by hydrolysis. After which Saccharomyces cerevisiae used these basic sugars for the development of ethanol by fermentation. A bioethanol yield of 14.1%, 10.81% and 7.5% was obtained from Tectona grandis ,Pterocarpus marsupium and paper respectively, which was analyzed using dichromate titrimetric method. Thebioethanol yield from Tectona grandis is predominantly when compared with other biomasses.

scholarly journals Synthesis of Bioplastic-based Renewable Cellulose Acetate from Teak Wood (Tectona grandis) Biowaste Using Glycerol-Chitosan Plasticizer

2018 ◽  
Vol 34 (4) ◽  
pp. 1810-1816 ◽  
Author(s):  
Baiti Rohmawati ◽  
Fatin Atikah Nata Sya’idah ◽  
Rhismayanti Rhismayanti ◽  
Dante Alighiri ◽  
Willy Tirza Eden
Keyword(s):  
Acetic Acid ◽  
Cellulose Acetate ◽  
Sodium Sulfite ◽  
Tectona Grandis ◽  
Hydroxyl Group ◽  
Ftir Analysis ◽  
Isolation Method ◽  
Calcium Hypochlorite ◽  
Optimum Result ◽  
Teak Wood

Cellulose acetate was synthesized from cellulose which was isolated from teak wood (Tectona grandis) biowaste. The isolation process used an isolation method using nitric acid, sodium hydroxide, sodium sulfite and bleaching with calcium hypochlorite. Cellulose acetate was synthesized with acetic anhydride, toluene as a solvent, and sulphuric acid as a catalyst. Cellulose acetate reacted with acetic acid as a catalyst and glycerol-chitosan as a plasticizer. This product yielded a bioplastic. The synthesized products were characterized by using FTIR and SEM. The bioplastic’s mechanical properties were evaluated by ASTM D638 method. Based on the results of FTIR analysis, this result was successfully performed. This condition was shown by the sharpness of the hydroxyl group of cellulose acetate than the hydroxyl group in the cellulose and wood powder. The optimum result of bioplastic was obtained by composition of cellulose acetate: acetic acid: chitosan: glycerol is 0.8 gram: 15 mL: 0,4 gram: 1 mL.

SERBUK GERGAJIAN KAYU JATI (Tectona grandis) SEBAGAI BAHAN PENGAWET KAYU DURIAN (Durio zibethinus)

2012 ◽  
Vol 4 (2) ◽  
pp. 1
Author(s):  
Budi Tri Cahyana
Keyword(s):  
Tectona Grandis ◽  
Raw Material ◽  
Furniture Industry ◽  
Durio Zibethinus ◽  
Potential Source ◽  
Teak Wood ◽  
Dry Wood ◽  
Natural Preservatives

Durian wood (Durio zibethinus) from unproductive trees is a potential source of wood as raw material for furniture industry, but it has the weakness of vurnability to the wood insects such as dry wood termites. The objective of research is to find out the effectiveness of sawdust extract of teak wood (Tectona grandis) in preventing the decaying of durian wood. Thus the effort can improve the properties of durian wood. The preservative used in the research is extract of teak sawdust, i.e 250 gr/5 l water, 500 gr/5 l water and 750 gr/5 l. The preservation is used by cold soaking to the solution resulted from extraction for 7 days. The result of research shows that the application of teak sawdust for 500 gr/5 l water is sufficiently effective, because it causes the mortality of dry wood termites for 100,00 % and the retention of 17, 01 mg/cm3.Keywords: teak sawdust, durian wood, natural preservatives, mortality, retention.

Effects of Wood Modification Using Natural Resin on Wood Quality and Bonding Properties

2020 ◽  
Vol 10 (2) ◽  
pp. 48-52
Author(s):  
Muhammad Navis Rofii ◽  
Ragil Widyorini ◽  
Ganis Lukmandaru
Keyword(s):  
Dimensional Stability ◽  
Wood Quality ◽  
Tectona Grandis ◽  
Wood Modification ◽  
Natural Resin ◽  
Gum Rosin ◽  
Bonding Properties ◽  
Teak Wood ◽  
Petroleum Oil

The aim of this study was to investigate the effect of gum rosin impregnation upon a low quality young teak wood in order to enhance its quality. The main objective of the treatment was to enhance the dimensional stability, as well as strength and to reduce the hygroscopicity. A 15-years old thinned teak wood (Tectona grandis L.f.) and gum rosin from Pinus merkusii Jungh. et de Vries were used for wood modification treatment by impregnation. Three kinds of non-polar solvents, i.e. turpentine oil, petroleum oil and n-hexane-, were used to make gum rosin solution. The results indicated that gum rosin impregnation did not markedly enhance the quality of young teak wood in terms of either dimensional stability or hygroscopicity; however, a little enhancement was delivered by using 15% gum rosin solution with n-hexane as the solvent. The treatment with petroleum oil solvent (at concentration of 7.5%) and at 15% concentration with n-hexane solvent resulted in highest bending properties. The highest bonding strength in dry condition was resulted by treatment with turpentine oil solvent.

Study on Volatile Substances of Different Provenances Teak(Tectona Grandis L.f) Wood by TGA

2011 ◽  
Vol 295-297 ◽  
pp. 88-92
Author(s):  
Cheng Ping Xie ◽  
Kai Fu Li ◽  
Yong Li ◽  
Jin Ling Lin ◽  
Kai Meng Xu
Keyword(s):  
Weight Loss ◽  
Tectona Grandis ◽  
Volatile Substances ◽  
Teak Wood ◽  
Tectona Grandis L.F

The inherent odor of teak wood has repellent, and has an obvious effects on animals and human. In this work, the weight loss of volatile substances of different provenances teak including India, Nigeria and Thailand has been studied by TGA. The emmision of volatile substances starts at 30°C and ends at 100°C, lossing weight of the all samples are very less in the range of 100-200°C. When the temperature is in the range of 200-250°C, the hemi-cellulose and cellulose is pyrolyzed and the char starts to form. The results all the curves of TGA for the teak samples is similar, the sapwood losing weight is clearly higher than the heartwood for the same provenance teak. The volatile substances of sapwood are ranked as follows:V3071> V3070> V3072> V8024> V3074> V1009> V3078> V1007, and the heartwood: V3074> V3070> V1009> V8024> V3072> V3071> V3078> V1007.

scholarly journals Wood physical properties, color, decay resistance and stiffness in Tectona grandis clones with evidence of genetic control

2013 ◽  
Vol 62 (1-6) ◽  
pp. 142-152 ◽  
Author(s):  
R. Moya ◽  
J. D. Marín ◽  
O. Murillo ◽  
L. Leandro
Keyword(s):  
Clonal Selection ◽  
Tectona Grandis ◽  
Wood Properties ◽  
Decay Resistance ◽  
Clonal Variation ◽  
Blue Color ◽  
Limited Information ◽  
Pycnoporus Sanguineus ◽  
Radial Shrinkage ◽  
Improvement Programs

AbstractTectona grandis (teak) plantations are being produced with trees from genetic improvement programs, including clonal selection. However, limited information about inheritance of wood properties is available. For studying genetic parameters of T. grandis wood properties and stem diameter two 10-yr-old trials were studied involving nominally 2 sites × 20 clones × 3 replicates × 1 ramet. Clonal variation was observed in: heartwood (HWP), pith (PP) and bark (BP) percentages; green moisture content (IMC) and density (GD); tangential (TS), radial (RS) and volumetric (VS) shrinkage and ratio tangential/radial: shrinkage (ratio T/R); L*a*b* color parameters; and stiffness and specify gravity (SG). Some wood properties evidenced strong across-sites genotypic control. The higher broad-sense heritability estimates (over 0.36) were for PP, IMC, SG, TS, VS and L*, a*, and b* color coordinates and stiffness. Low and non-significant values were estimated for HWP, BP, GD, RS, ratio T/R and decay resistance of sapwood and heartwood to Trametes versicolor and Pycnoporus sanguineus. However, HWP showed marked clone x site interaction. Phenotypic and tentatively estimated genotypic correlations indicate that selecting faster-growing clones will improve some important wood properties, such as increasing HWP, and decreasing PP and BP, without affecting other wood properties. Selecting clones for denser wood, as expected, improved stiffness, should decrease IMC and affect negatively b* (yellow/blue) color. Clone selection with lower L* values could increase redness (a*) of wood.

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