The Experts below are selected from a list of 360 Experts worldwide ranked by ideXlab platform
Yoldas Seki - One of the best experts on this subject based on the ideXlab platform.
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surface treatments of Jute fabric the influence of surface characteristics on Jute fabrics and mechanical properties of Jute polyester composites
Industrial Crops and Products, 2012Co-Authors: Kutlay Sever, Yoldas Seki, Mehmet Sarikanat, Gokhan Erkan, Umit Halis Erdogan, Seckin ErdenAbstract:Abstract In this study, Jute fabrics were modified by alkali, micro-emulsion silicon (MS) and fluorocarbon based agents (FA) in order to enhance the interfacial adhesion between the polyester matrix and the Jute fiber. X-ray photoelectron spectroscopy (XPS) and contact angle measurements were used to characterize fiber surfaces. The effects of various surface treatments on the mechanical and morphological of Jute/polyester composites were also studied. All surface treatments were shown to improve the tensile, flexural strengths and interlaminar shear strengths of the composites. Moreover, the maximum improvement in the mechanical properties was obtained for the FA treated Jute/polyester composites. SEM micrographs of the tensile fracture surface of Jute/unsaturated polyester composites also exhibited improvement of interfacial and interlaminar shear strengths by the alkali, MS and FA treatments of Jute fibers.
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effect of the low and radio frequency oxygen plasma treatment of Jute fiber on mechanical properties of Jute fiber polyester composite
Fibers and Polymers, 2010Co-Authors: Yoldas Seki, Kutlay Sever, Mehmet Sarikanat, Seckin Erden, Ali H GulecAbstract:We investigated the surface modification of Jute fiber by oxygen plasma treatments. Jute fibers were treated in different plasma reactors (radio frequency “RF” and low frequency “LF” plasma reactors) using O2 for different plasma powers to increase the interface adhesion between Jute fiber and polyester matrix. The influence of various plasma reactors on mechanical properties of Jute fiber-reinforced polyester composites was reported. Tensile, flexure, short beam shear tests were used to determine the mechanical properties of the composites. The interlaminar shear strength increased from 11.5 MPa for the untreated Jute fiber/polyester composite to 19.8 and 26.3 MPa for LF and RF oxygen plasma treated Jute fiber/polyester composites, respectively. O2 plasma treatment also improved the tensile and flexural strengths of Jute fiber/ polyester composites for both plasma systems. It is clear that O2 plasma treatment of Jute fibers by using RF plasma system instead of using LF plasma system brings about greater improvement on the mechanical properties of Jute/polyester composites.
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innovative multifunctional siloxane treatment of Jute fiber surface and its effect on the mechanical properties of Jute thermoset composites
Materials Science and Engineering A-structural Materials Properties Microstructure and Processing, 2009Co-Authors: Yoldas SekiAbstract:Abstract Natural fiber reinforced polymer composites have many applications because of their ease of fabrication, relatively low cost, low density and renewable resource. In spite of the various desirable properties of natural fiber to act as a reinforcing material, poor adhesion characteristics between natural fiber and polymer resin result in low mechanical properties. In this study, Jute–thermoset composites were fabricated by using unsaturated polyester and epoxy resins. To improve the adhesion between Jute fabric and thermoset, alkali treated Jute fibers were treated with oligomeric siloxane. FTIR analysis was used to confirm the surface treatment. The effects of fiber surface treatment on the mechanical properties of Jute reinforced thermoset composites were determined by using tensile test, flexure test and short beam shear test. The fractured surfaces of composites were investigated by scanning electron microscopic (SEM) technique. Once Jute fabrics were treated 1% siloxane concentration, the tensile and flexure properties of silane treated Jute thermoset composites increased. Surface treatment of Jute fiber caused a significant increase in the interlaminar shear strength (ILSS) of the thermoset composites. From SEM observations, better adhesion was observed for the Jute/thermoset composites in the presence of oligomeric siloxane.
Sarwar M Jahan - One of the best experts on this subject based on the ideXlab platform.
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chemical characteristics of ribbon retted Jute and its effect on pulping and papermaking properties
Industrial Crops and Products, 2016Co-Authors: Sarwar M Jahan, Jannatun Nayeem Mostafizur M Rahman, Marium Islam, M A QuaiyyumAbstract:Abstract Jute is a cash crop of Bangladesh, which is extracted from Jute plant by retting process. Retting and extraction processes have a profound effect on the quality of fiber and on the cost of fiber production. In the conventional retting, Jute plant is immersed in clear slow flowing water for 14–28 days to degrade the pectic materials, hemicellulose, and lignin. Conventional retting process is not environmental friendly and requires large amount of water. Therefore, Bangladesh Government has introduced ribbon retting method in different areas of the country to ease peeling of Jute fiber. In this paper, effect of ribbon retting on the chemical properties of Jute fiber and Jute stick was carried out. Pentosan, extractive and ash content in ribbon retted Jute fiber and Jute stick were higher and lignin and α-cellulose content were lower than the conventional retted Jute fiber and Jute stick. These differences were pronounced for Jute stick. Effect of ribbon retting on kraft pulping was also studied. Pulp yield of conventional retted Jute fiber and Jute stick was higher at any kappa number. The variation of papermaking properties of the produced pulp on retting process was insignificant. The bleachability of Jute fiber pulp was better than that of Jute stick pulp. Conventional retted fibers showed slightly better bleachability. Jute fiber pulp consumed 15 kg ClO2/MT of pulp to produce brightness of 81–86%, while Jute stick consumed 30 kg ClO2/MT of pulp to produce brightness 85%.
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dissolving pulp from Jute stick
Carbohydrate Polymers, 2015Co-Authors: Mhafuza Matin, M. Mostafizur Rahaman, Jannatfun Nayeem, Mamon Sarkar, Sarwar M JahanAbstract:Abstract Jute stick is woody portion of Jute plant, which remain as leftover after extracting bast fibre. Presently, it is being used for fencing in the rural area. In this investigation, biorefinery concept was initiated in producing dissolving pulp from Jute stick by pre-hydrolysis kraft process. At 170 °C for 1 h of pre-hydrolysis, 70% of hemicelluloses was dissolved with negligible loss of α-cellulose. At this condition, 75% of dissolved sugars in the pre-hydrolysis liquor were in the oligomeric form. The pre-hydrolysed Jute stick was subsequently pulped by kraft process with the variation of active alkali. The pulp yield was 36.2% with kappa number 18.5 at the conditions of 16% active alkali for 2 h of cooking at 170 °C. Final pulp was produced with 92% α-cellulose and 89% brightness after D 0 E p D 1 EpD 1 bleaching. The produced dissolving pulp can be used in rayon production.
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dissolving pulp from Jute stick
Carbohydrate Polymers, 2015Co-Authors: Mhafuza Matin, M. Mostafizur Rahaman, Jannatfun Nayeem, Mamon Sarkar, Sarwar M JahanAbstract:Abstract Jute stick is woody portion of Jute plant, which remain as leftover after extracting bast fibre. Presently, it is being used for fencing in the rural area. In this investigation, biorefinery concept was initiated in producing dissolving pulp from Jute stick by pre-hydrolysis kraft process. At 170 °C for 1 h of pre-hydrolysis, 70% of hemicelluloses was dissolved with negligible loss of α-cellulose. At this condition, 75% of dissolved sugars in the pre-hydrolysis liquor were in the oligomeric form. The pre-hydrolysed Jute stick was subsequently pulped by kraft process with the variation of active alkali. The pulp yield was 36.2% with kappa number 18.5 at the conditions of 16% active alkali for 2 h of cooking at 170 °C. Final pulp was produced with 92% α-cellulose and 89% brightness after D 0 E p D 1 EpD 1 bleaching. The produced dissolving pulp can be used in rayon production.
B Baboo - One of the best experts on this subject based on the ideXlab platform.
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Jute fibre glass plywood particle board composite
Indian Journal of Chemical Technology, 2008Co-Authors: D N Goswami, M F Ansari, N Prasad, B BabooAbstract:Jute-fibre glass reinforced sheets were prepared with shellac-containing sheet moulding compound. Highest tensile strength and tensile modulus values of Jute-fibre glass composites were obtained in the range of 49.76-51.71 MPa and 1.84-1.85 Gpa repectively. Flexural strength and flexural modulus were found to be 72.97-95.98 Mpa and 2.7-4.2 GPa respectively. Flexural strength values were found to be in the range of those of the reinforced sheets prepared using fiberglass alone, when the thickness of the sheets was increased up to 7-7.5 mm. Flame retardance of the sheets could be improved with the use of flame retardant. Thermal resistance of the sheets was found to be upto 220°C. Lamination of plywood and particleboard was also tried with Jute-fibre glass, which yielded improved mechanical properties.
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Jute-fibre glass-plywood/particle board composite
Indian Journal of Chemical Technology, 2008Co-Authors: D N Goswami, M F Ansari, N Prasad, B BabooAbstract:Jute-fibre glass reinforced sheets were prepared with shellac-containing sheet moulding compound. Highest tensile strength and tensile modulus values of Jute-fibre glass composites were obtained in the range of 49.76-51.71 MPa and 1.84-1.85 Gpa repectively. Flexural strength and flexural modulus were found to be 72.97-95.98 Mpa and 2.7-4.2 GPa respectively. Flexural strength values were found to be in the range of those of the reinforced sheets prepared using fiberglass alone, when the thickness of the sheets was increased up to 7-7.5 mm. Flame retardance of the sheets could be improved with the use of flame retardant. Thermal resistance of the sheets was found to be upto 220°C. Lamination of plywood and particleboard was also tried with Jute-fibre glass, which yielded improved mechanical properties.
P G Karmakar - One of the best experts on this subject based on the ideXlab platform.
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first report of potato leaf roll virus plrv naturally occurring on Jute corchorus olitorius in india
Plant Disease, 2014Co-Authors: Chinmay Biswas, S Satpathy, Piyali Dey, S Mitra, A Bera, P G KarmakarAbstract:Jute (Corchorus olitorius L.) is an important bast fiber crop that is mainly grown in the Southeast Asian countries like India, Bangladesh, Nepal, China, Indonesia, Thailand, Myanmar, and a few South American countries. In June 2013, symptoms suggestive of a viral disease were noticed on Jute (cv. JRO524) in an experimental field of the CRIJAF research farm, Barrackpore, India, and the incidence of the disease was less than 2%. The infected plants showed stunted growth and short height. Mostly the upper leaves elongated with curling and coiling of lamina. Puckering and shoe string effect were also noticed. Petioles and stipules of the affected leaves were exceptionally longer. Although initially the incidence was low, it may spread to larger areas in subsequent years. Because the Jute fiber is extracted from the stem, stunted growth and short height would badly affect the fiber yield and quality. Ten symptomatic and ten asymptomatic healthy looking samples were collected from the field. Corchorus golden m...
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an overview of research and development in Jute and allied fibre crops in india
Indian Journal of Agronomy, 2012Co-Authors: Bikash Singha Mahapatra, Sabyasachi Mitra, Mukesh Kumar, A K Ghorai, S Sarkar, D K Kundu, S Satpathy, P G KarmakarAbstract:Jute and allied fibre crops play an important role in Indian economy. Raw Jute farming alone creates employment of 10 million man days in agricultural sector per annum. Global production of Jute and allied fibres is around 3.0 million tonnes, 92.5% of which comes from India and Bangladesh. India is the single largest producer of Jute goods, contributes about 60% of the global production, and the present export earning is to the tune of 1200 crores per annum. Over the last five decades, the productivity of Jute has doubled from 1.04 t/ha in 1950–51 to 2.12 t/ha in 2009–10, which has been possible due to the introduction of high yielding and premature flowering resistant varieties along with improved production technologies and appropriate policy interventions. Cost effective weed control technologies, soil test based fertilizer application, use of efficient microbial consortium, development of energy efficient machines like seed drill, bast fibre extractors, etc. has increased the efficiency as well as the profitability of the Jute and allied fibre based production systems. Development of tossa and white Jute varieties having finer fibre (2.38 – 2.80 tex in tossa and 1.45 – 1.61 tex in white Jute) is a significant breakthrough in research as majority of the Jute diversified products require finer fibre. The renewed interest of the consumers all over the world for the eco-friendly and bio-degradable products is a big fillip for the natural fibres, and Jute and allied fibre sector need to encash this opportunity. This review aims at presenting the significant research achievements in Jute and allied fibre crops and also to analyse the constraints faced by the Jute and allied fibre sector to make it viable globally.
Seckin Erden - One of the best experts on this subject based on the ideXlab platform.
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surface treatments of Jute fabric the influence of surface characteristics on Jute fabrics and mechanical properties of Jute polyester composites
Industrial Crops and Products, 2012Co-Authors: Kutlay Sever, Yoldas Seki, Mehmet Sarikanat, Gokhan Erkan, Umit Halis Erdogan, Seckin ErdenAbstract:Abstract In this study, Jute fabrics were modified by alkali, micro-emulsion silicon (MS) and fluorocarbon based agents (FA) in order to enhance the interfacial adhesion between the polyester matrix and the Jute fiber. X-ray photoelectron spectroscopy (XPS) and contact angle measurements were used to characterize fiber surfaces. The effects of various surface treatments on the mechanical and morphological of Jute/polyester composites were also studied. All surface treatments were shown to improve the tensile, flexural strengths and interlaminar shear strengths of the composites. Moreover, the maximum improvement in the mechanical properties was obtained for the FA treated Jute/polyester composites. SEM micrographs of the tensile fracture surface of Jute/unsaturated polyester composites also exhibited improvement of interfacial and interlaminar shear strengths by the alkali, MS and FA treatments of Jute fibers.
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effect of the low and radio frequency oxygen plasma treatment of Jute fiber on mechanical properties of Jute fiber polyester composite
Fibers and Polymers, 2010Co-Authors: Yoldas Seki, Kutlay Sever, Mehmet Sarikanat, Seckin Erden, Ali H GulecAbstract:We investigated the surface modification of Jute fiber by oxygen plasma treatments. Jute fibers were treated in different plasma reactors (radio frequency “RF” and low frequency “LF” plasma reactors) using O2 for different plasma powers to increase the interface adhesion between Jute fiber and polyester matrix. The influence of various plasma reactors on mechanical properties of Jute fiber-reinforced polyester composites was reported. Tensile, flexure, short beam shear tests were used to determine the mechanical properties of the composites. The interlaminar shear strength increased from 11.5 MPa for the untreated Jute fiber/polyester composite to 19.8 and 26.3 MPa for LF and RF oxygen plasma treated Jute fiber/polyester composites, respectively. O2 plasma treatment also improved the tensile and flexural strengths of Jute fiber/ polyester composites for both plasma systems. It is clear that O2 plasma treatment of Jute fibers by using RF plasma system instead of using LF plasma system brings about greater improvement on the mechanical properties of Jute/polyester composites.
