Journal of the Indian Academy of Wood Science

Items from 1 to 20 out of 26 results

article

Sensitivity of acoustic tools to variation in equilibrium moisture content of small clear samples of loblolly pine (Pinus taeda)

Charles Essien, Brian K. Via, Thomas Gallagher, Timothy Mcdonald, more

Journal of the Indian Academy of Wood Science > 2018 > 15 > 1 > 10-20

There are several types of acoustic tools commercially available for wood characterization, but they are generally classified into resonance and time-of-flight (ToF) tools. This classification is based upon the mode of velocity estimation for wood. In this study, we explored how the equilibrium moisture content of small clear wood samples (2.5 cm × 2.5 cm × 41 cm) affect the predictive capabilities...

article

Differential termiticidal effects of Spondiathus preussii Engl. var preussii extracts on Vitex doniana wood

Gabriel Adetoye Adedeji, Adekunle Tajudeen Oladele, Adedapo Ayo Aiyeloja, Taiwo Olayemi Elufioye, more

Journal of the Indian Academy of Wood Science > 2018 > 15 > 1 > 1-9

Certain elements and compounds of biological importance are sequestered by many pesticidal plants, and are of global interest for wood protection. While manifold studies have demonstrated the protective properties of these elements and compounds, little is known about Spondiathus preussii (SP) biological activity and its closely related responsible chemicals. In this study, the leaf extract (LE) and...

article

Pulping of gamari roots (Gmelina arborea)

M. Sarwar Jahan, Mamon Sarkar, M. A. Quaiyyum

Journal of the Indian Academy of Wood Science > 2018 > 15 > 1 > 28-32

Gamari (Gmelina arborea) is planted for pulpwood in allocated forestland in Bangladesh. After harvesting of pulpwood roots are burnt in the land for re-cultivation. But the root is similar to wood. This root can be a supporting raw material in the pulp mill as mills are facing challenge to collect raw material. No study has been reported on the physical, chemical and morphological characteristics...

article

Tannin-based adhesive from Ceriops decandra (Griff.) bark for the production of particleboard

Suresh Kumar Nath, Md Nazrul Islam, Khandkar-Siddikur Rahman, Md Nasim Rana

Journal of the Indian Academy of Wood Science > 2018 > 15 > 1 > 21-27

This study presents the extraction of tannins from the bark of a common mangrove species named goran (Ceriops Decandra (Griff.) Ding Hou) and the technical evaluation of the tannin-based adhesive for the production of particleboard. Extraction of tannins was performed by hot water extraction method at 80 ± 5 °C temperature for 3 h. Chemical analysis of the bark extract was carried out to determine...

article

Thermal decomposition kinetics of jute fiber filled HDPE composites

Sonali Karmarkar, G. M. Shashidhara

Journal of the Indian Academy of Wood Science > 2018 > 15 > 1 > 33-40

Natural fiber–plastic composites are being used for many light structural applications. The thermal behaviour is particularly important for applications where product is subjected to conditions which are above ambient temperatures like under the hood auto components, processes involving elevated temperatures like curing, reprocessing, or in case of fire damage. This paper discusses thermal decomposition...

article

Effect of high temperature treatment of Hevea brasiliensis on density, strength properties and resistance to fungal decay

S. R. Shukla, S. K. Sharma

Journal of the Indian Academy of Wood Science > 2018 > 15 > 1 > 87-95

Plantation grown Hevea brasiliensis (rubberwood)—a tropical wood species of low natural durability was thermally processed at four temperatures in the range of 150–240 °C for different durations under vacuum. Effect of heat treatments on various important physical and mechanical properties such as weight loss, density, flexural strength (modulus of rupture—MOR), stiffness (modulus of elasticity—MOE),...

article

Effect of moisture on thermal properties of acrylic polymer modified mortar reinforced with alkali treated bamboo fibres

Banjo A. Akinyemi, Temidayo E. Omoniyi

Journal of the Indian Academy of Wood Science > 2018 > 15 > 1 > 45-51

In this study, bamboo fibres were used as reinforcement materials for acrylic emulsion polymer modified cement bonded concrete after treatment with 10% weight of NaoH solution at 23 °C for 24 h. Thermal conductivity, thermal resistance and thermal transmittance were studied and the effects of moisture penetration at 11% wet basis were evaluated. Moisture penetration greatly reduced the thermal strength...

article

Rice husk reinforced polypropylene composites: mechanical, morphological and thermal properties

N. Raghu, Amey Kale, Shakti Chauhan, Pankaj K. Aggarwal

Journal of the Indian Academy of Wood Science > 2018 > 15 > 1 > 96-104

Rice husk–Polypropylene (RH–PP) composites were prepared using four level of filler loadings (10, 20, 40 and 50%) incorporating maleic anhydride grafted Polypropylene (MAPP) and m-isopropenyl α–α-dimethylbenzyl-isocyanate grafted Polypropylene (m-TMI-g-PP) coupling agents. Mechanical properties of the composites indicated that m-TMI-g-PP coupling agent performed better than that of MAPP. Tensile and...

article

Evaluation of antibacterial susceptibility pattern of cellulolytic bacteria isolated from Coptotermes curvignathus gut to heavy metals, disinfectants and common antibiotics for termite control

Essam A. Makky, Chan Cai Wen, Muna Jalal Ali

Journal of the Indian Academy of Wood Science > 2018 > 15 > 1 > 105-113

The study aimed to isolate cellulolytic bacteria from the gut of subterranean termite (Coptotermes acinaciformis) and carry out antibacterial studies for termite control. The cellulase enzyme activity was determined by qualitative and quantitative techniques. The antibiotics and their combinations on isolated bacteria as well as heavy metals and disinfectants were performed by using disc diffusion...

article

A comparative study of dynamic and static modulus of elasticity of natural fiber reinforced HDPE composites

Sonali Karmarkar, G. M. Shashidhar, Shakti Chauhan

Journal of the Indian Academy of Wood Science > 2018 > 15 > 1 > 80-86

Dynamic modulus of elasticity (DMoE) of natural fiber reinforced high density polyethylene composites prepared with variety of fibers and their different proportions was determined using ultrasonic pulse propagation method. The DMoE was compared with the static modulus of elasticity as determined by both tensile and flexural test. The elastic modulus of the composites increased with the increasing...

article

Distance error for determining the acoustic velocity of standing tree using tree morphological, physical and anatomical properties

Charles Essien, Brian K. Via, Thomas Gallagher, Timothy McDonald, more

Journal of the Indian Academy of Wood Science > 2018 > 15 > 1 > 52-60

Time-of-flight (ToF) acoustic tools is one of the most practical nondestructive methods for predicting tree stiffness. In the literature, 120 cm between probes has been adopted as the standard for the assessment of tree acoustic velocity. However, there is no empirical study supporting this assertion, hence this study is aimed at determining the effect of distance on error for a common ToF acoustic...

article

Morphological, chemical, and thermal characteristics of chitosan nanocomposite films reinforced with steam-exploded microfibrillated cellulose

Achmad Solikhin, Bambang Hermawan, Eti Artiningsih Octaviani, Dita Sari Prabuningrum, more

Journal of the Indian Academy of Wood Science > 2018 > 15 > 1 > 68-79

The objective of the study was to investigate and analyze the morphological, chemical, and thermal properties of chitosan nanocomposite films reinforced with microfibrillated cellulose (MFC). MFC, which was isolated via steam explosion assited with alkaline treatment, produced a diameter size average of about 50 nm with self-aggregated ball-like shapes. Obtained chitosan/MFC nanocomposite films had...

article

Physico-mechanical properties of light red meranti (Shorea spp.) and kedondong (Canarium spp.) wood heat treated in convection oven

Rasdianah Dahali, Zaidon Ashaari, Seng Hua Lee, Edi Suhaimi Bakar, more

Journal of the Indian Academy of Wood Science > 2018 > 15 > 1 > 41-44

Physico-mechanical properties of light red meranti and kedondong wood heat treated in a laboratory at 160, 180 and 200 °C for 5, 7 and 9 h were investigated. Weight loss of the treated samples increased along with treatment severity. Heat treatment reduced the hygroscopicity of the wood where reduction in equilibrium moisture content and a positive moisture excluding efficiency was observed. Reduction...

article

Effect of diets on digestive enzymes from worker termites of Odontotermes brunneus (Termitidae)

R. Muthusamy, R. Gayathri, K. Suresh, T. Chethan Kumar

Journal of the Indian Academy of Wood Science > 2018 > 15 > 1 > 61-67

The digestive system of termites may have several biotechnological applications. The enzyme activity of α-amylase, cellulase and protease in Odontotermes brunneus workers were tested against three different diets. Additionally, the effects of temperature (30–80 °C) and pH (2.0–10.0) on enzyme activities were evaluated. All enzymes investigated were detected in the gut extracts of worker termites....

article

Anatomical and physical characteristics of some rattan species

M. Sharma, C. L. Sharma, D. Haokip

Journal of the Indian Academy of Wood Science > 2018 > 15 > 2 > 132-139

The stem of four rattan species namely Calamus latifolius, C. leptospadix, Daemonorops jenkinsiana and Plectocomia bractealis collected from Manipur was evaluated for its anatomical and physical characteristics. The stem diameter of both Calamus species was more in the top position than the bottom. The epidermis of all the investigated species was single layered with few sunken stomata. The lumina...

article

Understanding the natural durability of some African tropical heartwoods toward Pycnoporus sanguineus and Antrodia sp.: lignin structure and cellulose morphology control

Rodrigue Safou Tchiama, Patrice Soulounganga, Péguy Starlin Engozogho Anris, Arsène Bikoro Bi Athomo, more

Journal of the Indian Academy of Wood Science > 2018 > 15 > 2 > 162-171

The natural durability of the heartwoods from Testulea gabonensis Pellgr. (T. gabonensis), Julbernardia pellegriniana (J. pellegriniana), Aucoumea klaineana Pierre (A. klaineana), and Tieghemella africana Pierre (T. africana) widely used for windows, door frames, frameworks, closets, cupboards and plywood in the Congo Basin or other countries in the world were studied. The samples were exposed to...

article

The potential use of wood waste ash nanofiller for improvement of laminated veneer lumber production made from Jabon (Anthocephalus cadamba)

Sutrisno, Eka Mulya Alamsyah, Endah Sulistyawati, Asep Suheri

Journal of the Indian Academy of Wood Science > 2018 > 15 > 2 > 126-131

The objective of this research was to improve the bonding properties of laminated veneer lumber (LVL) and its strength made from Jabon (Anthocephalus cadamba) wood bonded using phenol formaldehyde (PF) adhesive mixed with nanofiller made from wood waste ash as substitution material of industrial filler produced from wheat flour. Wood waste ash (WWA) produced from boiler installation of plywood mill...

article

Fiberboards based on filled lignin resin and petiole fibers

Mohamed Ammar, Nabawia Mechi, Abdelmoumen Hidouri, Elimame Elaloui

Journal of the Indian Academy of Wood Science > 2018 > 15 > 2 > 120-125

Fiberboards were manufactured from filled phenolic resins (lignin-formaldehyde or glyoxal) and petiole date palm fibers. Lignin was obtained from paper industry waste black liquor. To improve lignin reactivity and increase the bonding strength between matrix and fiber, phosphogypsum (PG) was used as a filler in the resin formulation from 1 to 3 wt%. Phosphogypsum exhibited excellent performance as...

article

The changes in color and dynamic modulus of elasticity of five important Indonesian tropical wood species after 10 months of outdoor exposure

Lina Karlinasari, Muhammad Irsyad Azmi, Trisna Priadi

Journal of the Indian Academy of Wood Science > 2018 > 15 > 2 > 149-157

Environmental conditions affect the natural weathering that leads to changes in wood characteristics. This study was conducted to evaluate physical and color changes and to predict changes in the mechanical properties of uncoated wood after outdoor exposure for 10 months (300 days). Five commercially important tropical wood species from Indonesia were used in field tests in this study, namely sengon...

article

The chips generated during up-milling and down-milling of pine wood by helical router bits

Wayan Darmawan, Muhammad Azhari, Istie S. Rahayu, Dodi Nandika, more

Journal of the Indian Academy of Wood Science > 2018 > 15 > 2 > 172-180

Machining aspects with helical edge router bits (helix angle 15°, 30°, 45°, and 60°) with a cutting circle diameter of 8 mm were studied. The purpose of the research work was to investigate chip formation and surface roughness characteristics in milling pine wood by the straight and helical edge bits. The chips generated could be classified into four types by sieving into spiral chip (5 mesh), flow...

Volume:
15
Year:
2018

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Keywords

ADHESIVE (2)
DURABILITY (2)
LIGNIN (2)
STARCH (2)
TIME-OF-FLIGHT (2)
ACOUSTIC VELOCITY (1)
ALBIZIA SAMAN (1)
ALKALI CONSUMPTION (1)
AMYLASE (1)
ANTIBACTERIAL (1)
ANTRODIA SP. (1)
APPARENT ACTIVATION ENERGY (1)
BAMBOO (1)
BENDING STRENGTH (1)
BONDING PROPERTIES (1)
BORIC ACID (1)
CANCER CELLS (1)
CELLULASE (1)
CELLULOSE (1)
CHIP TYPE (1)
CHITOSAN (1)
COLOR CHANGE (1)
CONDUCTIVITY (1)
COPTOTERMES ACINACIFORMIS (1)
CROSS-LINKING (1)
CROWN DENSITY (1)
CROWN LIGHT (1)
CROWN RATIO (1)
CURVE MATCHING (1)
CYTOTOXIC ACTIVITY (1)
DECAY RESISTANCE (1)
DIMENSIONAL STABILITY (1)
DISINFECTANT (1)
DISTANCE ERROR (1)
ELASTIC MODULUS (1)
ENZYMES (1)
EQUILIBRIUM MOISTURE CONTENT (1)
EUCALYPTUS CAMALDULENSIS (1)
EXTRACTIVE (1)
EXTRACTIVES (1)
FIBER SATURATION POINT (1)
FIBERBOARD (1)
FLEXURAL VIBRATION (1)
FOLIAGE TRANSPARENCY (1)
FTIR (1)
GAMARI (GMELINA ARBOREA) (1)
GROUND TISSUE (1)
HDPE COMPOSITES (1)
HEAT TREATMENT (1)
HOT PESSING (1)
HYGROSCOPICITY (1)
JABON WOOD LVL (1)
JUTE FIBERS (1)
KAPPA NUMBER (1)
KRAFT PULP YIELD (1)
LIVING ALMOND TREES (1)
LUMINA SHAPE (1)
M-TMI-G-PP (1)
MACARANGA TREES (1)
MAPP (1)
MECHANICAL PROPERTIES (1)
MICROFIBRILLATED CELLULOSE (1)
MIXED COOKING (1)
MOED (1)
MOISTURE EXCLUDING EFFICIENCY (1)
MUCILAGE CANALS (1)
NANOCOMPOSITE FILMS (1)
NATURAL WEATHERING (1)
NIGERIAN ETHNOMEDICINAL PLANT (1)
NON-DESTRUCTIVE TESTING (1)
NORMAL CELLS (1)
ODONTOTERMES BRUNNEUS (1)
P. SANGUINEUS (1)
PARTICLEBOARD (1)
PETIOLE DATE PALM FIBERS (1)
PF ADHESIVE (1)
PHOSPHOGYPSUM (1)
PHYSICO-MECHANICAL (1)
PINE WOOD (1)
POLYMER (1)
PRE-TREATMENT (1)
PROTEASE (1)
PROTECTIVE PROPERTIES (1)
PULP YIELD (1)
PVA (1)
RESISTANCE (1)
RESISTIVITY ANOMALIES (1)
RESISTIVITY METHOD (1)
RICE HUSK (1)
ROOTS (1)
SCANNING ELECTRON MICROSCOPY (1)
SCHLUMBERGER ELECTRODE CONFIGURATION (1)
SEAWEED (1)
SOLID CONTENT (1)
SP ELEMENTS AND COMPOUNDS (1)
SPECIFIC GRAVITY (1)
STATIC MODULUS OF ELASTICITY (1)
STEAM EXPLOSION (1)
STRAIGHT AND HELICAL BITS (1)
STRENGTH PROPERTIES (1)
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INFONA - science communication portal

Journal of the Indian Academy of Wood Science

Sensitivity of acoustic tools to variation in equilibrium moisture content of small clear samples of loblolly pine (Pinus taeda)

Differential termiticidal effects of Spondiathus preussii Engl. var preussii extracts on Vitex doniana wood

Pulping of gamari roots (Gmelina arborea)

Tannin-based adhesive from Ceriops decandra (Griff.) bark for the production of particleboard

Thermal decomposition kinetics of jute fiber filled HDPE composites

Effect of high temperature treatment of Hevea brasiliensis on density, strength properties and resistance to fungal decay

Effect of moisture on thermal properties of acrylic polymer modified mortar reinforced with alkali treated bamboo fibres

Rice husk reinforced polypropylene composites: mechanical, morphological and thermal properties

Evaluation of antibacterial susceptibility pattern of cellulolytic bacteria isolated from Coptotermes curvignathus gut to heavy metals, disinfectants and common antibiotics for termite control

A comparative study of dynamic and static modulus of elasticity of natural fiber reinforced HDPE composites

Distance error for determining the acoustic velocity of standing tree using tree morphological, physical and anatomical properties

Morphological, chemical, and thermal characteristics of chitosan nanocomposite films reinforced with steam-exploded microfibrillated cellulose

Physico-mechanical properties of light red meranti (Shorea spp.) and kedondong (Canarium spp.) wood heat treated in convection oven

Effect of diets on digestive enzymes from worker termites of Odontotermes brunneus (Termitidae)

Anatomical and physical characteristics of some rattan species

Understanding the natural durability of some African tropical heartwoods toward Pycnoporus sanguineus and Antrodia sp.: lignin structure and cellulose morphology control

The potential use of wood waste ash nanofiller for improvement of laminated veneer lumber production made from Jabon (Anthocephalus cadamba)

Fiberboards based on filled lignin resin and petiole fibers

The changes in color and dynamic modulus of elasticity of five important Indonesian tropical wood species after 10 months of outdoor exposure

The chips generated during up-milling and down-milling of pine wood by helical router bits

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