A5070000802- Wood Treatment and Properties
- Forest ecology and management
- Forest Ecology and Conservation
- Bamboo properties and applications
- Organometallic Compounds Synthesis and Characterization
- Polymer Nanocomposites and Properties
- Natural Fiber Reinforced Composites
- Wood and Agarwood Research
- Tree Root and Stability Studies
- Essential Oils and Antimicrobial Activity
- Polymer crystallization and properties
- Lignin and Wood Chemistry
- X-ray Diffraction in Crystallography
- biodegradable polymer synthesis and properties
- Synthesis and properties of polymers
- Epoxy Resin Curing Processes
- Crystal structures of chemical compounds
- Metal complexes synthesis and properties
- Crystallization and Solubility Studies
- Agricultural and Food Sciences
- Plant Pathogens and Fungal Diseases
- Catalytic Processes in Materials Science
- Microplastics and Plastic Pollution
- Oil Palm Production and Sustainability
- Plant and Fungal Species Descriptions
University Kebangsaan Malaysia Medical Centre
2024
Universiti Malaysia Sarawak
2014-2023
Universiti Malaysia Pahang Al-Sultan Abdullah
2016-2023
Hospital Universiti Sains Malaysia
2009-2013
Universiti Sains Malaysia
2000-2012
Universiti Putra Malaysia
1995
Annamalai University
1994
Imperial College London
1983
Stand structure contributes to forest biodiversity and productivity. The disparity of stand between fragmented primary forests how they affect carbon storage are poorly understood. This study determined differences among some parameters in the correlation stock. Twenty-five replicate quadrats were established Bukit Durang Division 5, representing forests, Lambir Hills National Park Kubah constitute forests. All trees with diameter at breast height 10 cm above measured, tree species recorded....
Studies on the digestion of rice husk by HNO 3 at 65 °C over 2–12 h have been carried out. Changes in physical characteristics and morphology due to degradative effect nitric acid were studied using thermogravimetric analysis scanning electron microscopy. It was observed that residue obtained after 12 is a mixture loose cellulose fibres fragments cellulose–silica composite consisting mainly (ca. 24%) silica 76%), respectively.
Chemical treatment is often used to improve the physical and mechanical properties of wood materials. In this study, polymer composites (WPC) were prepared from five types tropical species by impregnating woods with methyl methacrylate (MMA) combined a cross-linker hexamethylene diisocyanate (HMDIC). Their dimensional stability then investigated. The impregnation monomer systems polymerization was accomplished through vacuum-pressure catalyst heat method, respectively. manufacturing WPC...
Abstract Melt reaction in blends comprising immiscible biopolymer, poly(3‐hydroxybutyrate) (PHB), and epoxidized natural rubber with 50 mol percent level of epoxidation (ENR‐50), prepared by solvent‐casting, has been studied. Differential scanning calorimetry (DSC) technique was used to measure the heat under isothermal annealing. The increases respect PHB ENR‐50 content as long they constitute dispersed phases exhibits a maximum at about 50% PHB. A mechanism degradation chains shorter...
Two new tree variants, namely Acacia hybrid and second-generation mangium, have been introduced in plantation forests Sarawak, Malaysia, their wood qualities were examined. The mean basic density of was comparable with mangium. However strength properties A. mangium significantly lower compared to hybrid. fibre length wall thickness the found be greater than that Fibre diameter lumen smaller Runkel slenderness ratios fibres showed they suitable for pulp paper production. more resistant...
Considerable progress has been achieved in developing supercapacitor materials with desirable charge storage properties; however, uniting energy density (ES) and power (PS) a single device is an elusive issue. We have explored diverse range of structures such as (i) activated carbon from bio-resources, (ii) ceramic electrochemical nanoparticles, nanowires, nanoribbons, (iii) layered to overcome this An ES ∼52.6 Wh kg-1 @ PS ∼15000 W delivered using nanowire nanocomposites based which appear...
In this study the tropical light hardwood species jelutong (Dyera costulata), terbulan(Endospermum diadenum), batai (Paraserianthes moluccana), rubberwood (Hevea brasiliensis), and pulai (Alstonia pneumatophora) were treated with benzene diazonium salt to improve their dynamic Young’s modulus (Ed), thermal stability. Benzine reacted cellulose in wood produced 2,6-diazocellulose by a coupling reaction, as confirmed Fourier transform infrared (FTIR) spectroscopy. Values of Ed calculated from...
Abstract Blends of poly(3‐hydroxy butyrate‐ co ‐3‐hydroxy valerate) (PHBV) and poly(ethylene oxide) (PEO) were prepared by casting from chloroform solutions. Crystallization kinetics melting behavior blends have been studied differential scanning calorimetry optical polarizing microscopy. Experimental results reveal that the constituents are miscible in amorphous state. They form separated crystal structures solid was under isothermal nonisothermal conditions. Owing to large difference...