The Experts below are selected from a list of 1293 Experts worldwide ranked by ideXlab platform
Sabu Thomas - One of the best experts on this subject based on the ideXlab platform.
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Thermal Stability and Degradation of Banana Fibre/PF Composites Fabricated by RTM
Fibers and Polymers, 2012Co-Authors: K N Indira, P Jyotishkumar, Sabu ThomasAbstract:The influence of chemical modifications of Banana Fibres and Fibre/PF composites fabricated by RTM technique was investigated by thermo gravimetric analysis (TGA). The kinetic studies of thermal degradation of untreated and treated Fibres have been performed using Broido method. The treatment causes variation in the surface topography of the Fibres. Therefore, more energy is needed for the degradation of Fibres and hence higher activation energy for decomposition. Fiber reinforced composites with 40 wt% fiber loading was found to be more thermally stable. Furthermore, the treated Fibre-reinforced composites with 40 wt% fiber loading posses superior thermal stability with respect to untreated fiber-reinforced composites; especially with the alkali treated fiber reinforced composites.
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thermal stability and degradation of Banana Fibre pf composites fabricated by rtm
Fibers and Polymers, 2012Co-Authors: K N Indira, P Jyotishkumar, Sabu ThomasAbstract:The influence of chemical modifications of Banana Fibres and Fibre/PF composites fabricated by RTM technique was investigated by thermo gravimetric analysis (TGA). The kinetic studies of thermal degradation of untreated and treated Fibres have been performed using Broido method. The treatment causes variation in the surface topography of the Fibres. Therefore, more energy is needed for the degradation of Fibres and hence higher activation energy for decomposition. Fiber reinforced composites with 40 wt% fiber loading was found to be more thermally stable. Furthermore, the treated Fibre-reinforced composites with 40 wt% fiber loading posses superior thermal stability with respect to untreated fiber-reinforced composites; especially with the alkali treated fiber reinforced composites.
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adhesion and wettability characteristics of chemically modified Banana Fibre for composite manufacturing
Journal of Adhesion Science and Technology, 2011Co-Authors: K N Indira, Yves Grohens, C Baley, Sabu Thomas, Kuruvilla Joseph, Laly A PothenAbstract:In this work Banana Fibre was chemically modified using various chemical agents. The surface energy of the Fibre is an important parameter and one which governs the interaction of Fibre with polymeric matrices. This paper describes the influence of various chemical treatments on the surface energy of the Banana Fibre investigated by contact angle measurements, spectroscopic analysis and surface morphology studies. The surface energy, work of adhesion, polarity, spreading coefficient, interfacial energy and interaction parameter were determined in the case of raw and chemically modified Fibres. Chemical modification has been found to have a profound effect on the surface energy. The polar and dispersive components of the surface energy were also found to be dependent on the chemical treatment involved. The chemical modifications done in this work were: alkali treatment, silanation, benzoylation, formylation, potassium permanganate treatment and acetylation. Of all the modifications, the relative surface en...
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the role of Fibre matrix interactions on the dynamic mechanical properties of chemically modified Banana Fibre polyester composites
Composites Part A-applied Science and Manufacturing, 2006Co-Authors: Laly A Pothan, Sabu Thomas, Gabriel GroeninckxAbstract:Abstract The role of Fibre/matrix interactions in chemically modified Banana Fibre composites were investigated using dynamic mechanical analysis and compared with those of untreated Fibre composites. The dynamic modulus value and damping parameter, used to quantify interfacial interaction in composites were investigated with special reference to the effect of temperature and frequency. Increased dynamic modulus values and low damping value show the improved interactions between the Fibre and the matrix. The damping peaks were found to be dependent on the nature of chemical treatment. Both storage modulus and damping values measured experimentally are consistent and point to the effectiveness of silane A174 coupling agent (γ-methacryloxypropyl trimethoxy silane) for improving Fibre–matrix adhesion. Activation energy values for the transitions of the composites were determined from Arrhenius plots. Cole–cole plots were made to evaluate the heterogeneity of the system.
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The role of Fibre/matrix interactions on the dynamic mechanical properties of chemically modified Banana Fibre/polyester composites
Composites Part A-applied Science and Manufacturing, 2006Co-Authors: Laly A Pothan, Sabu Thomas, Gabriel GroeninckxAbstract:Abstract The role of Fibre/matrix interactions in chemically modified Banana Fibre composites were investigated using dynamic mechanical analysis and compared with those of untreated Fibre composites. The dynamic modulus value and damping parameter, used to quantify interfacial interaction in composites were investigated with special reference to the effect of temperature and frequency. Increased dynamic modulus values and low damping value show the improved interactions between the Fibre and the matrix. The damping peaks were found to be dependent on the nature of chemical treatment. Both storage modulus and damping values measured experimentally are consistent and point to the effectiveness of silane A174 coupling agent (γ-methacryloxypropyl trimethoxy silane) for improving Fibre–matrix adhesion. Activation energy values for the transitions of the composites were determined from Arrhenius plots. Cole–cole plots were made to evaluate the heterogeneity of the system.
Yeo Kiam Beng - One of the best experts on this subject based on the ideXlab platform.
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mechanical properties of woven Banana Fibre reinforced epoxy composites
Materials & Design, 2006Co-Authors: S M Sapuan, A Leenie, Mohamed Harimi, Yeo Kiam BengAbstract:In this paper, the experiments of tensile and flexural (three-point bending) tests were carried out using natural Fibre with composite materials (Musaceae/epoxy). Three samples prepared from woven Banana Fibre composites of different geometries were used in this research. From the results obtained, it was found that the maximum value of stress in x-direction is 14.14 MN/m2, meanwhile the maximum value of stress in y-direction is 3.398 MN/m2. For the Young’s modulus, the value of 0.976 GN/m2 in x-direction and 0.863 GN/m2 in y-direction were computed. As for the case of three-point bending (flexural), the maximum load applied is 36.25 N to get the deflection of woven Banana Fibre specimen beam of 0.5 mm. The maximum stress and Young’s modulus in x-direction was recorded to be 26.181 MN/m2 and 2.685 GN/m2, respectively. Statistical analysis using ANOVA-one way has showed that the differences of results obtained from those three samples are not significant, which confirm a very stable mechanical behaviour of the composites under different tests. This shows the importance of this product and allows many researchers to develop an adequate system for producing a good quality of woven Banana Fibre composite which maybe used for household utilities.
S M Sapuan - One of the best experts on this subject based on the ideXlab platform.
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Tensile and Flexural Behavior of Hybrid Banana Pseudostem/Glass Fibre Reinforced Polyester Composites
Key Engineering Materials, 2011Co-Authors: I N Hanifawati, S M Sapuan, M Azmah A Hanim, E S ZainuddinAbstract:Natural Fibre-based thermoset composites are generally lower in strength performance compared to synthetic thermoset composites. Hybridization with some amount of synthetic Fibre enhanced the mechanical properties of the composites. This study focused on the performance of mechanical properties of hybrid Banana/glass Fibre reinforced polyester composites. Hybrid composites with different volume ratios of Banana to glass Fibre were prepared. The reinforcing effect of both Fibres in polyester is also evaluated in various Fibre loadings. Results showed that both flexural and tensile properties have been improved with the increasing level of overall Fibre content loading. Tensile and flexural strength shows great enhancement by the introduction of a slight amount of glass Fibre to the Banana Fibre polyester matrix.
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tensile and flexural behavior of hybrid Banana pseudostem glass Fibre reinforced polyester composites
Key Engineering Materials, 2011Co-Authors: I N Hanifawati, S M Sapuan, M Azmah A Hanim, E S ZainuddinAbstract:Natural Fibre-based thermoset composites are generally lower in strength performance compared to synthetic thermoset composites. Hybridization with some amount of synthetic Fibre enhanced the mechanical properties of the composites. This study focused on the performance of mechanical properties of hybrid Banana/glass Fibre reinforced polyester composites. Hybrid composites with different volume ratios of Banana to glass Fibre were prepared. The reinforcing effect of both Fibres in polyester is also evaluated in various Fibre loadings. Results showed that both flexural and tensile properties have been improved with the increasing level of overall Fibre content loading. Tensile and flexural strength shows great enhancement by the introduction of a slight amount of glass Fibre to the Banana Fibre polyester matrix.
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mechanical properties of woven Banana Fibre reinforced epoxy composites
Materials & Design, 2006Co-Authors: S M Sapuan, A Leenie, Mohamed Harimi, Yeo Kiam BengAbstract:In this paper, the experiments of tensile and flexural (three-point bending) tests were carried out using natural Fibre with composite materials (Musaceae/epoxy). Three samples prepared from woven Banana Fibre composites of different geometries were used in this research. From the results obtained, it was found that the maximum value of stress in x-direction is 14.14 MN/m2, meanwhile the maximum value of stress in y-direction is 3.398 MN/m2. For the Young’s modulus, the value of 0.976 GN/m2 in x-direction and 0.863 GN/m2 in y-direction were computed. As for the case of three-point bending (flexural), the maximum load applied is 36.25 N to get the deflection of woven Banana Fibre specimen beam of 0.5 mm. The maximum stress and Young’s modulus in x-direction was recorded to be 26.181 MN/m2 and 2.685 GN/m2, respectively. Statistical analysis using ANOVA-one way has showed that the differences of results obtained from those three samples are not significant, which confirm a very stable mechanical behaviour of the composites under different tests. This shows the importance of this product and allows many researchers to develop an adequate system for producing a good quality of woven Banana Fibre composite which maybe used for household utilities.
Karthik N Madhyastha - One of the best experts on this subject based on the ideXlab platform.
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a study on the vibration characteristics of bagasse Banana Fibre hybrid composite
International Journal of Composite Materials, 2017Co-Authors: Pavana B Kumara, Shreeranga Bhat, Karthik N MadhyasthaAbstract:Natural fiber reinforced composites are gaining tremendous attention among researchers and academicians off late. The ecofriendly nature and sustainability in addition to low cost and easy availability are the main reasons. Recently several studies are focussing on the vibration characteristics of natural Fibre reinforced composites. The present work deals with the study of vibration characteristics of hybrid composite material in which chemically treated natural fibers like bagasse and Banana are used as reinforcing element. The composite is fabricated by hand layup technique and its vibration properties are studied where vibration test was executed by using resistance strain sensors to detect the dynamic strain in the composite plates. Graphs are drawn to compare the composite material with different proportion of bagasse and Banana Fibre. Finally, the project is clinched based on the comparative results obtained.
T M Vatsala - One of the best experts on this subject based on the ideXlab platform.
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biobleaching of Banana Fibre pulp using bacillus subtilis c o1 xylanase produced from wheat bran under solid state cultivation
Journal of Industrial Microbiology & Biotechnology, 2007Co-Authors: A Manimaran, T M VatsalaAbstract:A cellulase-free xylanase produced by Bacillus subtilis C 01 from wheat bran under solid-state cultivation was tested for its efficacy in biobleaching of raw Banana Fibre and Banana pulp obtained through a mechanical pulping process. Banana pulp samples treated with crude xylanase (450 nkat g−1 pulp) resulted in a 19.6% increase in the brightness as compared to untreated pulp. The presence of chromophores, hydrophobic compounds and an increased reducing sugar (10.79 mg g−1 pulp) quantity in the bleached solution after enzymatic treatment indicated the removal of materials that were absorbed at 237 nm from the Banana pulp.
