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Z Mohd A Ishak - One of the best experts on this subject based on the ideXlab platform.
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polypropylene oil palm Empty Fruit Bunch glass fibre hybrid composites a preliminary study on the flexural and tensile properties
European Polymer Journal, 2001Co-Authors: H D Rozman, R N Kumar, A Abusamah, H Ismail, G S Tay, Z Mohd A IshakAbstract:Polypropylene (PP) hybrid composites were made using oil palm Empty Fruit Bunch (EFB) and glass fibres (GF) as reinforcing agents in PP matrix. The incorporation of both fibres into PP matrix has resulted in the reduction of flexural and tensile strengths. Both flexural and tensile modulus have been improved with the increasing level of overall fibre content loading. Three types of coupling agents, i.e. maleic-anhydride-modified PP (commercial name Epolene, E-43), polymethylenepolyphenyl isocyanate (PMPPIC) and 3-(trimethoxysilyl)-propylmethacrylate (TPM), were attempted. Overall, E-43 and TPM had imparted considerable improvements in the flexural and tensile properties. However, only slight improvements in some cases were shown for those composites treated with PMPPIC.
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the effect of oil extraction of the oil palm Empty Fruit Bunch on the mechanical properties of polypropylene oil palm Empty Fruit Bunch glass fibre hybrid composites
Polymer-plastics Technology and Engineering, 2001Co-Authors: H D Rozman, R N Kumar, A Abusamah, H Ismail, Z Mohd A IshakAbstract:Hybrid composites were made using oil palm Empty Fruit Bunch (EFB) and glass fibres (GF) as reinforcing agents in polypropylene (PP) matrix. Three types of coupling agents were incorporated in the composites, i.e. maleic anhydride–modified polypropylene (commercial name Epolene, E-43), polymethylene (polyphenyl isocyanate) (PMPPIC) and 3-(trimethoxysilyl)-propylmethacrylate (TPM). Comparisons were made between composites with oil-extracted (extracted with a toluene, acetone, and ethanol) and unextracted EFB. The results showed that composites with oil-extracted EFB produced significantly higher flexural and tensile strength and toughness than those without extraction. Scanning electron microscopy (SEM) study revealed that oil extraction had resulted in the formation of continuous interfacial region between EFB and PP matrix, and an increase in the ductility of the matrix.
H D Rozman - One of the best experts on this subject based on the ideXlab platform.
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polypropylene oil palm Empty Fruit Bunch glass fibre hybrid composites a preliminary study on the flexural and tensile properties
European Polymer Journal, 2001Co-Authors: H D Rozman, R N Kumar, A Abusamah, H Ismail, G S Tay, Z Mohd A IshakAbstract:Polypropylene (PP) hybrid composites were made using oil palm Empty Fruit Bunch (EFB) and glass fibres (GF) as reinforcing agents in PP matrix. The incorporation of both fibres into PP matrix has resulted in the reduction of flexural and tensile strengths. Both flexural and tensile modulus have been improved with the increasing level of overall fibre content loading. Three types of coupling agents, i.e. maleic-anhydride-modified PP (commercial name Epolene, E-43), polymethylenepolyphenyl isocyanate (PMPPIC) and 3-(trimethoxysilyl)-propylmethacrylate (TPM), were attempted. Overall, E-43 and TPM had imparted considerable improvements in the flexural and tensile properties. However, only slight improvements in some cases were shown for those composites treated with PMPPIC.
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the effect of oil extraction of the oil palm Empty Fruit Bunch on the mechanical properties of polypropylene oil palm Empty Fruit Bunch glass fibre hybrid composites
Polymer-plastics Technology and Engineering, 2001Co-Authors: H D Rozman, R N Kumar, A Abusamah, H Ismail, Z Mohd A IshakAbstract:Hybrid composites were made using oil palm Empty Fruit Bunch (EFB) and glass fibres (GF) as reinforcing agents in polypropylene (PP) matrix. Three types of coupling agents were incorporated in the composites, i.e. maleic anhydride–modified polypropylene (commercial name Epolene, E-43), polymethylene (polyphenyl isocyanate) (PMPPIC) and 3-(trimethoxysilyl)-propylmethacrylate (TPM). Comparisons were made between composites with oil-extracted (extracted with a toluene, acetone, and ethanol) and unextracted EFB. The results showed that composites with oil-extracted EFB produced significantly higher flexural and tensile strength and toughness than those without extraction. Scanning electron microscopy (SEM) study revealed that oil extraction had resulted in the formation of continuous interfacial region between EFB and PP matrix, and an increase in the ductility of the matrix.
Anli Geng - One of the best experts on this subject based on the ideXlab platform.
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high loading oil palm Empty Fruit Bunch saccharification using cellulases from trichoderma koningii mf6
Process Biochemistry, 2014Co-Authors: Zunsheng Wang, Kityeng Chew, Anli GengAbstract:Abstract Strain Trichoderma koningii D-64 was improved for enhanced cellulase production. A potential mutant MF6 was obtained and its enzymes contained filter paper cellulase (FPase), carboxymethylcellulase (CMCase), β-glucosidase and xylanase with respective activities of 2.0, 1.3, 2.0 and 3.0 folds of those for the parental strain. MF6 cellulases showed enhanced hydrolysis performance for the treated lignocellulosic biomass. Hydrolysis of treated oil palm Empty Fruit Bunch (OPEFB), horticulture wastes (HW) and wood chips (WC) resulted in cellulose to glucose conversion of 96.3 ± 2.2%, 98.2 ± 3.0% and 81.9 ± 1.4%, respectively. The corresponding conversions of xylan to xylose were 96.9 ± 1.5%, 95.0 ± 2.2% and 76.1 ± 3.1%. Consistently, high sugar yield of 770–844 mg/g biomass was obtained for high-loading (10–16%, w/v) of OPEFB hydrolysis and sugar titer of 135.1 g/L was obtained for 16% (w/v) OPEFB loading at 96 h. In addition, MF6 enzymes alone performed equally well for high-loading OPEFB hydrolysis compared to the enzyme mixture of β-glucosidase from Aspergillus niger and cellulase from T. reesei Rut C30.
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cellulase production and oil palm Empty Fruit Bunch saccharification by a new isolate of trichoderma koningii d 64
Process Biochemistry, 2012Co-Authors: Zunsheng Wang, Anli GengAbstract:Abstract A new strain Trichoderma koningii D-64 was isolated from Singapore soil samples. It produced cellulase, xylanase, and laccase on a variety of carbon sources. Enzyme activities of 3.8 ± 0.3, 40.3 ± 5.1, 6.6 ± 0.3 and 98.8 ± 10.3 U/mL were respectively obtained for FPase, CMCase, β-glucosidase and xylanase in a mixture of 1% cellulose and 2% wheat bran. About 70–95% saccharification efficiency of oil palm Empty Fruit Bunch was obtained using T. koningii D-64 enzymes alone without the supplement of any other commercial enzymes. Strain T. koningii D-64 is therefore a potential cellulase producer for the efficient lignocellulosic biomass conversion to fermentable sugars.
Kaewta Kaewtatip - One of the best experts on this subject based on the ideXlab platform.
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surface treated oil palm Empty Fruit Bunch fiber improved tensile strength and water resistance of wheat gluten based bioplastic
Composites Part B-engineering, 2019Co-Authors: Wantani Chaiwong, Nabil Samoh, Theera Eksomtramage, Kaewta KaewtatipAbstract:Abstract This study evaluated the morphology, chemical composition and color parameters of oil palm Empty Fruit Bunch (OPEFB) fiber after surface treatment with hot water (90 °C) and alkali treatments (1 w/v% and 5 w/v% NaOH). Treatment of the fiber with a 5 w/v% solution of NaOH more effectively eliminated residual surface contaminants than hot water treatment and alkaline treatment with 1 w/v% NaOH. However, color parameters were slightly reduced. The tensile strength and water absorption of composites of wheat gluten and surface-modified fiber were compared with the same properties of composites loaded with unmodified fiber. The highest tensile strength and lowest water absorption were obtained with a composite of wheat gluten and 15 wt% OPEFB fiber treated with 5 w/v% NaOH. The good adhesion between the fiber and the wheat gluten matrix enabled a more effective transfer of stress from the wheat gluten matrix to the fiber and also reduced water absorption into the wheat gluten matrix. Therefore, composites of wheat gluten and oil palm Empty Fruit Bunch fiber have potential to be developed for use as green composite materials.
A. L. Ahmad - One of the best experts on this subject based on the ideXlab platform.
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optimization studies on acid hydrolysis of oil palm Empty Fruit Bunch fiber for production of xylose
Bioresource Technology, 2007Co-Authors: S H A Rahman, J P Choudhury, A. L. Ahmad, Azlina Harun KamaruddinAbstract:Abstract Oil palm Empty Fruit Bunch fiber is a lignocellulosic waste from palm oil mills. It is a potential source of xylose which can be used as a raw material for production of xylitol, a high value product. The increasing interest on use of lignocellulosic waste for bioconversion to fuels and chemicals is justifiable as these materials are low cost, renewable and widespread sources of sugars. The objective of the present study was to determine the effect of H 2 SO 4 concentration, reaction temperature and reaction time for production of xylose. Batch reactions were carried out under various reaction temperature, reaction time and acid concentrations and Response Surface Methodology (RSM) was followed to optimize the hydrolysis process in order to obtain high xylose yield. The optimum reaction temperature, reaction time and acid concentration found were 119 °C, 60 min and 2%, respectively. Under these conditions xylose yield and selectivity were found to be 91.27% and 17.97 g/g, respectively.
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production of xylose from oil palm Empty Fruit Bunch fiber using sulfuric acid
Biochemical Engineering Journal, 2006Co-Authors: S H A Rahman, J P Choudhury, A. L. AhmadAbstract:Abstract Oil palm Empty Fruit Bunch fiber is a lignocellulosic waste from palm oil mills. It is a potential source of xylose which can be used as a raw material for production of xylitol, a high value product. The increasing interest on use of lignocellulosic waste for bioconversion to fuels and chemicals is justifiable as these materials are low cost, renewable and widespread sources of sugars. Batch hydrolysis of oil palm Empty Fruit Bunch fiber was performed at operating temperature 120 °C using various concentration of sulfuric acid (2–6%) and reaction time (0–90 min). Concentration of xylose, glucose, furfural and acetic acid in the resulting hydrolysate were determined. Kinetic parameters of mathematical models were obtained in order to predict concentration of xylose, glucose, furfural, acetic acid in the hydrolysate and to optimize the process. Optimum H 2 SO 4 concentration and reaction time obtained under operating temperature of 120 °C was 6% and 15 min, respectively. Optimum concentration of xylose, glucose, furfural and acetic acid found in the hydrolysate were 29.4, 2.34, 0.87 and 1.25 (g/l), respectively.